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This can be used to teach about surface tension or to demonstrate the importance of using soap while washing hands.

From: https://www.pinterest.com/pin/483714816221144652/

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Make Germs Scatter Science Demonstration

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Kids will be amazed at this simple science demonstration that shows how using soap when washing hands literally makes "germs" scatter.

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This demonstration can be used to shows all four steps of the water cycle including evaporation, condensation, precipitation, and collection.
From: https://www.pinterest.com/pin/483714816221144650/Remove

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This hands-on water cycle demonstration clearly shows all four steps of the water cycle including evaporation, condensation, precipitation, and collection.

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This can be used when teaching about static electricity. Can be explained that when you bring the balloon close to the water stream, the negative charge attracts the positive parts in the water atoms. The attraction pulls the water towards the balloon as it is flowing and bend the stream.

From:  https://www.rookieparenting.com/what-is-static-electricity-science-experiment-stem-for-kids/

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* This post contains affiliate links. Thank you for supporting this blog! *
Here is a simple physics experiment you can do with your kiddo.

You can bend water using the static electricity in a balloon.

Yes, you can BEND WATER! How cool is that?!

What you need

kitchen faucet

inflated balloon

your own hair (or a dry microfiber cloth)

adult supervision

Steps

1. Turn on the kitchen faucet to get a narrow, continuous stream of water.

2. Rub the inflated balloon on your hair several times until some of your hair starts sticking to the balloon when you lift the balloon.

3. Place the balloon near, but not touching, the stream of water.

4. Observe how the water bends towards the balloon.

Do you know how to bend water? Try this super cool static electricity science experiment. #STEM Click To Tweet

Why

Every object is made up of small particles called atoms. A balloon comprises many atoms and so does your hair.

These particles are extremely small and you cannot see them without a microscope.

There are two types of charges in every atom - positive change(s) and negative charge(s).

Only negative charges are free to move.

When rubbed against the hair, the balloon picks up the free negative charges from your hair making the balloon negatively charged.

This imbalance of electric changes on the surface of the balloon is called static electricity.

Static electricity, unlike current electricity (e.g. simple circuit), does not flow through wires or conductors.

The charge remains there until it is removed.

How Does Static Electricity Bend Water?

Opposite charges attract.

When you bring the balloon close to the water stream, the negative charge attracts the positive parts in the water atoms.

The attraction pulls the water towards the balloon as it is flowing and bend the stream.

Do you know what other objects can create static electricity when they're rubbed against your hair? Tell us below.

References
Learn about Static Charge & Static Shock

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What Is Static Electricity? Science Experiment | STEM For Kids

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This post contains affiliate links. Thank you for supporting this blog! * Here is a simple physics experiment you can do with your kiddo. You can bend water using the static electricity in a balloon. Yes, you can BEND WATER! How cool is that?!

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Can be used to visibly show the sound waves in actions that make a vibration.
From: https://frugalfun4boys.com/2015/07/10/science-demonstration-kids-sound-vibrations/

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It's easy enough to tell kids that sounds are caused by vibrations, but that can be a tough concept for them to really grasp! Here are two simple demonstrations that allow kids to actually SEE sound waves in action.
This post is the final installment in the Summer STEAM Camp that we have been taking part in! STEAM stands for science, technology, engineering, art, and math, and several awesome bloggers have teamed up to bring you fun STEAM activities for kids. You can find more posts in the series at the bottom of this post.
This post contains Amazon affiliate links.
The boys and I studied sound in our science book this past year ( Exploring Creation with Chemistry and Physics), so they were familiar with sound waves. I explained that our ears are equipped with an ear drum to receive sound waves and carry messages to our brains. The Magic School Bus Explores the Senses is a great book for learning about how our ears work, and it covers the other senses as well. After learning about ear drums, we were ready to see one in action.
For this demonstration, you will need:
I cut down our plastic cup to make it shorter. That ended up not mattering with the way we used the speaker... you'll see in a minute. Cut the neck off the balloon so that you can stretch it over the cup.

Once the balloon is secure on the cup, sprinkle salt over the top of the balloon.

Then we cranked up the music and watched the salt dance!

If you have a large enough speaker, simply putting the cup next to the speaker will be sufficient. We ended up holding our portable speaker over the cup.

After making the basic ear drum demonstration, I ran across Chladni Plates while looking up a few terms for this post. Ernst Chladni was a scientist who studied acoustics in the 1800's. He discovered a fascinating way to "see" sound waves by using a violin bow to vibrate a metal plate covered with a fine powder, such as salt. The vibrations cause the salt to settle into geometric patterns that show how the metal is vibrating. Different frequencies of vibration create different patterns.

You can read more about Chladni Plates here at The Physics Classroom. This article has a lot of great information for older students (high school+). Scroll down to find the part about Chladni Plates, but all of it is relevant to this topic.

I have a video to show you with an awesome Chladni Plate demonstration, but first check out our homemade version! We don't own the equipment needed to create the patterns that Chladni discovered, but with some basic materials from around the house we were able to create salt patterns with high notes and low notes. SO COOL!
Here's what you need:

A glass bowl

Parchment paper

A large rubber band

Salt - we colored ours blue with a few drops of food coloring to make it easier to see

A portable bluetooth speaker

A phone with a tuner app - there are several free tuner apps that will play tones.

Step 1: Place your speaker inside your bowl. Cover the top of the bowl with parchment paper. We used one large rubber band to attach the paper to the bowl.

Step 2: Sprinkle a good layer of salt over the parchment paper.

Step 3: Turn on your tuner app, and experiment with different notes.

This is a low note (large patterns):

And this is a high note:

If you scroll through the notes on the tuner, you will probably notice that the salt dances around a LOT more for certain frequencies, both high and low. This is because all objects naturally resonate (vibrate) at certain frequencies when you strike them. When you find your bowl's natural resonance, the salt will really go crazy!
Here's a video of our homemade salt vibrations: And here is a fantastic demonstration of Chladni Plates: NOTE: Keep your volume low for both of these videos! This post is a part of Summer STEAM Camp, where several bloggers are teaming up to bring you fantastic science, technology, engineering, art, and math activities for kids. Be sure to check out the rest of the posts in this series!

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It's easy enough to tell kids that sounds are caused by vibrations, but that can be a tough concept for them to really grasp! Here are two simple demonstrations that allow kids to actually SEE sound waves in action. This post is the final installment in the Summer STEAM Camp that we have been taking part in!

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Use this to actually see the oxygen/carbon dioxide process of plants.

From: http://www.kcedventures.com/blog/how-do-leaves-breathe-a-simple-science-experiment-for-kids

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Learn how plants breathe with this easy outdoor science activity that makes the invisible visible!

I just realized that we haven't shared many Simple Science Experiments lately.

Our goal with Simple Science activities is to provide you with quick & easy ideas that help kids explore science!

Most of these require very few items (many of which are found around your home) and can be set up in less than 5 minutes. If you'd like to introduce your child to science, these experiements are the perfect place to begin!

For today's Simple Science experiment, we're going to head outdoors and learn how leaves breathe!

All you'll need is a bowl of water and a leaf!

For this experiment, we're going to create an environment where we can actually see the oxygen/carbon dioxide process of plants!

You don't need many supplies for this activity; we've listed affilite links for books and a few items that we found helpful when doing the experiment.

This activity is really VERY interesting for two reasons:

* first, kids don't always think of plants & trees as 'living' things so this helps them to visualize that concept and

* second, it's a way to actually SEE something that is normally invisible!

Before you begin the experiment, we suggest introducing the topic with a book. Here are a few books we highly recommend:

Tell Me, Tree: All About Trees for Kids A Tree Is a Plant (Let's-Read-and-Find-Out Science) for preschool and elementary age kids. Both books give a nice overview of the lifecycle of a tree including science terms. and

For a more in-depth science look, try Botany: Plants, Cells and Photosynthesis (Super Smart Science) for middle schoolers

or if you're looking for LOTS of great answers to botany science questions, see V is for Venus Flytrap: A Plant Science Alphabet!

If you're also studying plant cells as part of a biology unit, the Learning Resources Cross Section Plant Cell model or the Giant Magnetic Plant Cell are both awesome teaching tools for this concept!

Exploring How Plants & Trees Breathe

Even though we chose to use a tree leaf, you can also conduct this experiment using a leaf from a plant -- the important step is including an ACTIVE leaf (meaning one that you remove from the tree or plant).

Step 1: Fill a large bowl with lukewarm water

You can use a glass or plastic bowl (personally, I like glass bowls better as you'll be able to see the experiment from all angles however you will probably have the bowl outside so you may want to use plastic).

If you're replicating this experiment in the classroom, a large size beaker would also work -- in fact, you can extend the experiment by measuring the amount of water you use to cover the leaf to see if that has any impact on the results!
I have not tried this experiment with a metal bowl so if you do, leave me a note and let me know how it turns out!
Step 2: Head outside and find a large leaf

You'll want to remove a leaf from a tree or plant and not just pick one up off the ground as we want an 'active' leaf for the project.

If you'd like to, have some fun with art & science by making a leaf rubbing before you go to the next step!

Step 3: Place the leaf in the bowl of water and put a small rock on top of it so it is FULLY submerged under the water

Then put the bowl in a sunny spot.

As you can see, this is really the benefit of using a glass bowl -- you can be sure your entire leaf is underwater.

If you have a place inside that's super sunny, you can also try keeping the bowl there.

Step 4: WAIT!

Oh yea, did I mention that now we need to wait a few hours ;)

I know -- one of the hardest things for kids. So go on with your day -- maybe set the experiment up before lunch or quiet time. Or your kids can get it ready before they head off to school or the park and it will be waiting for them when they come back.

And while you're waiting, here are a few other simple science experiments you can browse:

Does your Food Sink or Float? {physics & density for kids}

Create Your Own Gong ! {science of soundwaves for elementary & middle school}

How Much Water is in Snow? {evaporation & weather science}

Step 5: Take a peek a few hours later

What you should be seeing is small bubbles that form around the leaf and the edges of the bowl. These are easy to see with the naked eye but having a large magnifying glass on hand always makes an experiment feel more scienc-y ;)

Ask your kids what would happen if they held their breath, went underwater in the pool and then let their breath out -- they would see bubbles coming up in the water.

That's what they are seeing here -- the leaf is still using the sunlight as part of the photosynthesis process (where leaves convert sunlight to energy).

As a leaf creates that energy, it needs to get rid of the items it no longer needs so it will expel both the extra oxygen during photosysthesis along with water (the release of water from a plant is called transpiration).

The process of photosynthesis is what allows us to see the bubbles -- as the leaf releases its' extra oxygen while submerged, the oxygen can be seen as bubbles in the water.

And since oxygen is lighter than water, the bubbles will eventually rise to the surface.

Now does a tree or plant breathe the same as we (humans) do?

Nope!

A plant, tree or leaf doesn't have any lungs or respiratory system.

But it is a living organism just like we are!

So there you have it -- you can tell the kids they are 'seeing the invisible' because when leaves are on the tree, you aren't able to really see them breathe ;)

If you're looking for more plant science, try using a Garden Root Viewer to see how plants grow or the Nature Series: Science in a Garden kit!

Here are a few more leaf activities you'll enjoy --

18 Fall Leaf Crafts & Experiments

Using Leaf Rubbings to Study the Parts of a Leaf

More Simple Science Activities

Looking for more easy science experiments? Try these!

12 Citizen Science Projects for Kids

20 Science Experiments you can do in a Jar

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How Do Leaves Breathe? A Simple Science Experiment for Kids

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Learn how plants breathe with this easy outdoor science activity that makes the invisible visible! I just realized that we haven't shared many Simple Science Experiments lately. Our goal with Simple Science activities is to provide you with quick & easy ideas that help kids explore science!

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Can be used to show how the hole on the bottom had all of the water from the entire bottle being pushed down out of it creating pressure. This explains why the stream comes out faster because it has more water pressure.

From: http://www.learnplayimagine.com/2014/06/water-power-demonstration.html

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Going along with our hands on water science activities for kids, we made a simple water fountain to demonstrate water power. Setting up this demonstration literally took less than five minutes. The hardest part was finding an empty soda bottle, because we never drink it! I finally just bought a cheap one from Walmart and dumped the Coke down the drain.

empty 2 liter bottle

water

golf tees or tape

container to catch the water

pen or sharp object to poke holes

Directions: To set up our water power demonstration, my husband cut three holes into an empty two liter soda bottle.

He plugged the holes with golf tees, although tape would also do the trick.

JZ (6) filled up the bottle with water, and my husband held it over the bin.

The boys quickly pulled the tees out of the bottle at the same time, and we watched the water pour out into the bin below. I asked JZ which hole the water poured out of the fastest.

JZ guessed that the water came out of the top hole the fastest, so we filled the bottle up and did the demo again. This time he noted that water sprayed out of the bottom hole the fastest. I explained that the hole on the bottom had all of the water from the entire bottle being pushed down out of it. After our demo the boys played with the bottle and water bin for awhile, taking advantage of the hot day.

For more water science for kids follow me on Pinterest.

More hands on water science for kids:

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Going along with our hands on water science activities for kids, we made a simple water fountain to demonstrate water power. Setting up this demonstration literally took less than five minutes. The hardest part was finding an empty soda bottle, because we never drink it!

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Can be used to show that when  the air inside a plastic bottle is warmed, it expands and needs more space, therefore it stretches out a balloon placed over it.  When the bottle is transferred to icy cold water, the air is cooled; it contracts and needs less space, so the balloon deflates.  The mass of air remains constant inside the bottle, so this shows that the warm air requires more space and is less dense than cool air.
From: http://www.learning4kids.net/2015/01/15/hot-air-cold-air-science-activity/

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One of the most amazing highlights of my trip to Dubai was the opportunity to fly in a hot air balloon with Balloon Adventures Emirates. It was incredible! The hot air balloon ride is the inspiration behind The Hot Air, Cold Air Science Activity. There is so much science behind the idea of hot air balloons and I thought that sharing the photos with my children of the balloon ride would be a great opportunity to extend this learning into a science activity.

This Hot Air, Cold Air Science Activity is a great experiment to watch the effects of hot air and cold air on a balloon. This activity is a great opportunity for kids to talk about what they can see and why it is happening. Kids will absolutely love this activity and will see, first hand, what effects hot and cold air has on a balloon.

What you will need?

You will need two containers, one filled with hot tap water and the other with ice and cold water. You will also need 1 balloon and a 1.25litre (or 2litre) plastic soft drink bottle. The larger the bottle the more room the air has to push up and expand.

Please do not use boiling hot water for this activity. Hot water from the tap will effectively work for this activity.

During the following steps of the activity, provide children with the opportunity to predict, ask questions and discuss ideas.

1. Blow the balloon up to stretch it and help make it more flexible and let the air out.

2. Place the balloon over the mouth of the empty plastic bottle.

3. Stand the bottle in the centre of the container filled with hot water. Wait a few minutes and notice the balloon start to inflate and expand.

4. Remove the bottle from the hot water and place it in the container with cold water and ice. Wait a few moments and notice that the balloon starts to deflate and contract.

5. Repeat step 3 and 4 again....it's amazing!

Let's Learn

Science activities and experiments are a great opportunity to make connections between real life experiences such as the hot air balloon ride. It encourages children to ask questions and promote scientific thinking such as making predictions, observations, comparison, reasoning, data gathering, experimentation and evaluation.

Other Learning Opportunities

Language development: Using descriptive words to express ideas and opinions.

Cause and Effect

Concentration

What is happening?

When the air inside the plastic bottle is warmed, it expands and needs more space, therefore it stretches out the balloon. When the bottle is transferred to the icy cold water, the air is cooled; it contracts and needs less space, so the balloon deflates. The mass of air remains constant inside the bottle, so this shows that the warm air requires more space and is less dense than cool air.

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Hot Air, Cold Air Science Activity is a great experiment to watch the effects of hot air and cold air on a balloon. This activity is a great opportunity for kids to talk about what they can see and why it is happening. Kids will absolutely love this activity and...

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Can be used when learning about weather and cloud formation.

From: https://www.notimeforflashcards.com/2015/03/make-cloud-jar-kitchen-science.html?utm_content=buffer2896f&utm_medium=social&utm_source=pinterest.com&utm_campaign=buffer

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We are studying weather in my classroom right now and my own kids get to be the guinea pigs for all activities that I am not certain will go smoothly with my preschool class. I posted this Instagram of our first attempt and immediately people were asking for more information. I asked my kids to help me re-do the experiment with step by step photos so we did a little more kitchen science to show you how to make a cloud in a jar.

Gather your materials. You will need a glass jar with a lid (although a snug dish will work), hot water (boiling works even better), an aerosol spray (we used hairspray), and ice cubes. If you have a child capable of handling boiling water a pyrex measuring cup is great to have on hand as well.

Start by boiling the water then pouring it into the jar. We used about 1/3 of a cup.

Quickly spray the hairspray into the jar. The spray gives the water vapor a surface to condense into tiny cloud droplets. Some experiments use a match instead. Both work but boiling water was enough of a risk for one experiment.

Pop the lid on with the ice and watch the cloud form. This was our 4th time overall doing this and my 4-year-old was still amazed.

When you are ready to lift the lid and let the vapor out!

For more science ideas check out our list of 15 Fun Science Experiments For Kids.

For other great projects, make sure to follow us over on Facebook!

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We are studying weather in my classroom right now and my own kids get to be the guinea pigs for all activities that I am not certain will go smoothly with my preschool class. I posted this Instagram of our first attempt and immediately people were asking for more information.

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Have kids discuss how they can make the colors of the rainbow starting with three colors. This lesson teaches color theory, capillary action, the scientific method, and engineering.
From:  http://www.schoolingamonkey.com/rainbow-walking-water-science/

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Kids will love making their very own walking water rainbow from just three colors. It's amazing how color mixing can make something spectacular!
Walking water is a classic science experiment that we've tried before. But this year, Monkey realized that she could make the entire rainbow this way starting with just the primary colors. It was a lot of fun to watch the rainbow form right before our eyes! This lesson teaches color theory, capillary action, the scientific method, and engineering.

Kids will have a blast with this simple rainbow science experiment!

Rainbow Walking Water Science Experiment

This simple project packs a lot of learning into a tiny package! Kids will love watching the colors slowly transform over the course of 48 hours.
Disclaimer: This post contains affiliate links at no cost to you for your convenience.
What you need to make the rainbow walking water science experiment:

Fill three jars full of water. Add red Food coloring to one, blue to another, and yellow to another.

Go over the color wheel before starting. Show the kids how mixing colors will create different colors. However, don't tell them how to make the rainbow!

Let the kids discuss how they will make a rainbow from just three colors. It will take them a little bit to determine the right combination.

If the kids are stumped, you can help them out by reminding them what colors are together in a rainbow.

Put an empty jar between red and yellow, yellow and blue, and blue and red.

*****************

*********************

Roll the paper towels into tube-like pieces and put one end in a full jar and the other end in an empty jar.

The paper towels will start soaking up the water right away, but it will take about 48 hours before the process is finished. Set a timer to find out exactly how long it takes to start mixing colors.

Within a few hours, you will see the color starting to mix in the empty jars.

Kids will love watching the new colors appear!

Rainbow Walking Water STEM Integration

Science: Color theory, capillary action. With paper towels (and plants work the same way), the molecules in the water are attracted to the molecules in the paper towels. This causes the water to slowly move from the jar, up through the paper towel, and into the next jar. Eventually, the water level in all the jars will even out. This is one of the most fascinating areas of science!

Technology: Food coloring is a marvel of modern science. We also used a timer to determine how long it took for the water to travel to one container to another.

Engineering: Kids have to set up the experiment properly or it won't work. If you mix the wrong colors, you won't end up with a rainbow, but a muddy-looking mess!

Math: Measuring, time estimation, comparison.

More St. Patrick's Day STEM
St. Patrick's Day STEM Activities Rainbow Rubber Eggs DIY Kelley Green Bouncy Ball

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Magic Rainbow Walking Water Science Experiment

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Kids will love making their very own walking water rainbow from just three colors. It's amazing how color mixing can make something spectacular! Walking water is a classic science experiment that we've tried before. But this year, Monkey realized that she could make the entire rainbow this way starting with just the primary colors.

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This can be used to teach how animals stay warm in harsh artic weather. They have a thick layer of fat that acts as an insulator; blubber.
From: https://www.homesciencetools.com/a/whale-blubber-project

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Whale Blubber Experiment Many animals live their lives in extreme weather conditions. Blue whales, for example, migrate between warm breeding waters and cold feeding waters near Antarctica and in the Arctic. How do whales and other animals stay warm in very cold water and climates? Find out with this easy science demonstration that uses only common household items.

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Can be used to provide a visual for diffusion to show the movement of a substance from an area of high to low concentration due to the random motion of molecules in a container. A higher temperature means greater motion. A lower temperature means less motion. The faster they move, the more quickly they will spread out into their container. This is what happens when you put a tea bag into cold and hot water.

From: http://www.teachwithfergy.com/diffusion-demonstration/

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This activity can either be done as a student inquiry or teacher demonstration. In either case, a preliminary and follow-up discussion can be used to stimulate thinking and reinforce concepts taught in the unit.

Materials needed:
* 2 tea bags
* 2 transparent mugs or glasses
* cold water - ice cold water if possible
* a kettle

The Activity:
1. Have your students draw this chart.

2. Ask your students what they think will happen when one tea bag is put into hot water and another into cold water? Have them write it down in the 'My Opinion' column including why they think so.
3. Have your students share their answers with the person beside them. Each student should then write the combined opinion in the 'Group Opinion' column as they did before.
4. Lastly, have each group share their results with another group and write the consensus opinion in the 'Shared Opinion' column.
5. Perform the demonstration by placing 1 tea bag into a cup of cold water (the colder the better - use ice cubes if possible) and 1 tea bag into a cup of boiling water.
Time-Lapse 8X Speed
6. Have your students complete the row 'Describe what happened'
7. Explain what occurred.

Explanation:
First some simple thermodynamics:
You know in those airplane or space movies where a door is opened and people get sucked out? Well, that doesn't really happen, not like that anyways. Yes, air does move from inside to outside but there isn't the massive suction effect. Prior to that door being opened, molecules of air continually collide with the door but do so in a random manner. When the door is opened, there's simply nothing stopping their motion so any molecule that would have collided with the door, simply leaves the room. There's a net movement of molecules from inside to outside because there are more molecules inside therefore, there's a greater chance of one of them moving through the door than a similar molecule moving from outside to inside. After a short time (shown in the movies as that suction effect I already mentioned), there is an equal number of molecules inside and outside. The molecules are still moving and passing through the door, however, now the number of molecules that pass from inside to outside, is the same as those that move from outside to inside
The molecules in the left diagram will experience a net movement from left to right. The diagram on the right shows an equal distribution and therefore, there will be no net movement.
Diffusion is just like that. It's the movement of a substance from an area of high to low concentration due to the random motion of molecules in a container. If we put a thermometer inside a liquid, we see the reading as how hot or cold the liquid is. However, what we are really finding out is how quickly the objects inside the liquid are moving. A higher temperature means greater motion. A lower temperature means less motion. Absolute zero (0° Kelvin) is the point where a molecule stops its motion entirely. However, this number is only theoretical as we've never experienced an absolute zero situation. Even space is approximately 2.7° Kelvin or -270.45° Celsius. Back to our door example. Since temperature is motion and we know that a molecule's motion is random, it can be understood that if we increase the air temperature, our molecules are going to move faster and therefore, will randomly collide with our open door more often. Liquids are no different. If we increase the temperature of the liquid, the molecules inside will gain energy and move faster. The faster they move, the more quickly they will spread out into their container. This is what happens when you put a tea bag into cold and hot water.

Tea Bag In Cold Water:
In the cold water, the molecules of the tea bag don't have as much energy and therefore, don't move as fast. It takes them a long time to spread evenly throughout the water.

Tea Bag In Hot Water:
Alternatively, in hot water, the molecules of the tea bag have a lot more energy and therefore, spread into the surrounding water quickly.
After 10 minutes of diffusion
8. Have your students complete the last row using the information you provide in the explanation.

That's it. Please let me know what you think in the comments.

Devon - Teach With Fergy

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This activity can either be done as a student inquiry or teacher demonstration. In either case, a preliminary and follow-up discussion can be used to stimulate thinking and reinforce concepts taught in the unit. Materials needed: * 2 tea bags * 2 transparent mugs or glasses * cold water - ice cold water if possible * a kettle The Activity: 1.