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The air in your throat vibrates when you speak.

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Bats can hear much more than humans and dogs. They have to because they depend on sound to know where they're going.

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https://www.youtube.com/watch?v=qV4lR9EWGlY
https://www.youtube.com/watch?v=KjwcfUDnMEM

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sound can give us the power to push stuff.

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Dogs can hear much more than humans.

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https://www.youtube.com/watch?v=-l7C1eZWv1I

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Sound waves vibrate, making the wave go up and down.

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https://www.brainpop.com/science/energy/sound/

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Energy is used by people that exist.
It is important

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There is no sound in space because there is no medium for sound waves to travel through. The longitudinal waves need a medium to travel through, and there is none in space

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I learned that sound goes in longitudinal waves. Also, i learned that frequency is measured in hertz.

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I think light needs a medium and that there is a medium in space the reason that sound doesn't move in space is because molecules are too far apart so the sound is in the negatives so you can't hear it. but light can move fast enough for it to bounce of of it so it isn't in the negatives.

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Sound is very important to animals and us. Without sound you can´t tell is someone is talking to you and bats would probably be extinct. I think this because bats use echolocation to find food and dodge predators and not run into trees or something. So if bats can tell if their predator is right in front of them then they would get eaten and if they can´t tell if they are gonna hit something then they would fall and get hurt. Also they could not hunt. Another thing that makes sound useful if that sonar uses the same process that echolocation does. It sends waves out and bounces back because of echo if it hits something.

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Here is a picture of vibrations.

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Sound wave is caused by vibration. Touch your throat for a moment. You can feel that your viral cords vibrate. Also , when you talk higher, the wavelength and the pitch goes very high. Pitch means how high or low a sound is. You can also measure sound with full of decibels. for example:
. baby crying=120 decibels
.Whisper=0-5 decibels
Light is also a type of energy. When the light is turned off, the light particles inside go very slow. But when you turn on the light, the light particles move very fast.

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Sound waves are caused by vibrations. Sound is measured in decibels, or Hertz. You can hear sound because sound waves travel in your ear, hits your ear drum, turning into a fluid, then carried by nerves into your brain. Humans can hear sounds from 20 to 20,000 Hertz. Dogs can hear from 0 to 35,000 Hertz. Bats can hear from 0 to 100,000 Hertz. Echolocation is when an animal (most likely bats) produce an echo. When the echo hits something, it comes back and the animal gets a better under standing of what and where it is. This is common for bats because a bat can' t see very well. Sound that goes faster then the speed of light is called super sonic. Frequency, amplitude, wavelength, and pitch. Frequency is how many waves per second. Amplitude is the distance between the center to the crest or trough. Wavelength is the distance between the crest and crest or trough and trough.Pitch is how high or low a sound is. Sound can travel faster in some materials more then others.

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Energy travels in waves. Some waves need a medium to travel through. Sound is an example. Other waves (like light) can travel without a medium. we still can learn lots about energy!

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Sound is measured by decibels. There are two things about and related to sound. Frequency is the number of times or cycles in waves. Amplitude  is the loudness and softness of a sound.
http://www.mediacollege.com/audio/01/sound-waves.html
t

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Anjali  -  What type of lens is in your eye?

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Anjali  -  What type of lens is in your eye?

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I think the lenses in our eyes are convex lenses. I think this because on the Light lesson slides, on the model, it looks like the eye's lens is curving outward. On one of the other slides, it says that convex lenses curve outward.

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Light is all around us!

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I think our lenses in our eyes are prism lenses. I think this because we all see color. So it said in the BrainPOP video the prism makes color out of white light beams.

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Light energy can travel through empty space. Light bounces of things. Sometimes, light is bent.

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Thermal energy is related to heat.

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Thermal ENERGY

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Thermal energy is the energy which adds the kinetic energy plus the potential energy gets the total amount of energy it has. The total amount of speed you went. For example, you're running/skating/ or jogging depends on the amount of you're putting pressure into it.

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According to the World Fact Book 2008, the world’s oil reserves will last until 2052 and gas reserves will last until 2065.eThe World Coal Institute says that, at current production levels, proven coal reserves are estimated to last 147 years. That means no more coal after 2155.eMore than 1/3 of the world’s crude oil is refined into gasoline. Other main products are distillate fuel oil (mainly diesel oil) and jet fuel (mainly kerosene).eInefficient appliances, drafty windows and doors, poor insulation, and other fixable energy wasters cost U.S. consumers an estimated $300 billion a year—more than the U.S. military budget.eIf a person yelled for 8 years, 7 months, and 6 days, he or she would produce enough energy to heat one cup of coffee.eA hurricane releases 50 trillion to 200 trillion watts of heat energy. This is as much energy as a 10-megaton nuclear bomb exploding every 20 minutes.

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According to the World Fact Book 2008, the world’s oil reserves will last until 2052 and gas reserves will last until 2065.eThe World Coal Institute says that, at current production levels, proven coal reserves are estimated to last 147 years. That means no more coal after 2155.eMore than 1/3 of the world’s crude oil is refined into gasoline. Other main products are distillate fuel oil (mainly diesel oil) and jet fuel (mainly kerosene).eInefficient appliances, drafty windows and doors, poor insulation, and other fixable energy wasters cost U.S. consumers an estimated $300 billion a year—more than the U.S. military budget.eIf a person yelled for 8 years, 7 months, and 6 days, he or she would produce enough energy to heat one cup of coffee.eA hurricane releases 50 trillion to 200 trillion watts of heat energy. This is as much energy as a 10-megaton nuclear bomb exploding every 20 minutes.

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1. According to the World Fact Book 2008, the world’s oil reserves will last until 2052 and gas reserves will last until 2065.e

2. The World Coal Institute says that, at current production levels, proven coal reserves are estimated to last 147 years. That means no more coal after 2155.e

3. More than 1/3 of the world’s crude oil is refined into gasoline. Other main products are distillate fuel oil (mainly diesel oil) and jet fuel (mainly kerosene).e

4. Inefficient appliances, drafty windows and doors, poor insulation, and other fixable energy wasters cost U.S. consumers an estimated $300 billion a year—more than the U.S. military budget.e

5. If a person yelled for 8 years, 7 months, and 6 days, he or she would produce enough energy to heat one cup of coffee.e

6. A hurricane releases 50 trillion to 200 trillion watts of heat energy. This is as much energy as a 10-megaton nuclear bomb exploding every 20 minutes.

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🔥 Best HD fireplace video, romantic relaxing fireplace with natural sound

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Thermal energy is the vibration of atoms

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Thermal energy powers ovens and microwaves. Fire is an example of thermal energy.

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Thermal energy is created when atoms or molecules become hot.

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Another name for Thermal Energy is Heat Energy. Also thermal energy is used when a stove is turned on.Thermal Energy is caused by moving particles but you can't see the particles with a naked eye.

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Potential energy is stored energy. For example: a ball on the floor is potential energy because it has potential to move

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Animals can create potential energy when they rest and create kinetic energy when they move. Here's an example of potential energy:

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Energy makes computers work and if computers didn't work!!!!!!!
I wouldn't be able to play games and that's what I do in my free time on my mac

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Energy is important

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Kinetic energy is the movement of energy and potential energy is energy at rest. A example of kinetic energy is a cheetah 70 miles per hour. A example of potential energy are the planet hanging on the ceiling.

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Potential energy is when an objec

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A battery is an example of potential and kinetic energy.

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potential energy is energy that doesn't move.

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Kinetic energy is moving energy. Such things include a ball thrown, a car driving, and a paper airplane fliying.

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If we didn't have any kinetic energy we couldn't move at all, and without potential energy we can't stop after moving or move at all.

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Potential energy is resting energy and kinetic energy is when anything moves.

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Potential energy is stored energy. For example, let's say a ball is on the floor. It's really in its resting position.
Kinetic energy is energy in motion

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Kinetic energy is when energy is moving. For example, If you dribble a basketball it is kinetic energy and when someone catches the ball it is potential
.

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Potential and kinetic energy are two types of energy:

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Potential energy turns to kinetic energy when the object that stored the potential energy is moved. One example is when an animal moves like these pugs:

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Sound is caused by vibrations. Also by DECIMALS! Jk decibels!

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Sounds can vibrate. They are not just to hear but sound can

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Energy travels through waves. Some waves travel through mediums. Here's an example:

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1. Only 10% of energy in a light bulb is used to create light. Ninety percent of a light bulb’s energy creates heat. Compact fluorescent light bulbs (CFLs), on the other hand, use about 80% less electricity than conventional bulbs and last up to 12 times as long.g

2. Refrigerators in the U.S. consume about the same energy as 25 large power plants produce each year.e

3. There are two basic groups of energy: renewable energy (biomass, geothermal, solar, water, and wind power) and nonrenewable (fossil fuels coal, oil, natural gas, nuclear). Three quarters of the world’s energy is generated by burning fossil fuels.h

Humans have harnessed solar energy since ancient times

1. Enough sunlight reaches the earth’s surface each minute to satisfy the world’s energy demands—for an entire year.d

2. The amount of energy Americans use doubles every 20 years.g

3. From 2008 to 2030, world energy consumption is expected to increase more than 55%.g

4. About 5,000 years ago, the energy people consumed for their survival averaged about 12,000 kilocalories per person each day. In AD 1400, each person was consuming about twice as much energy (26,000 kilocalories). After the Industrial Revolution, the demand almost tripled to an average of 77,000 kilocalories per person in 1875. By 1975, it had tripled again to 230,000 kilocalories per person.c

5. The world’s biggest blackout occurred on August 14, 2004, when a massive power outage occurred across the northeastern U.S. and throughout Ontario, Canada, affecting 50 million people.g

Google data centers used 260 million megawatts of power in 2010

1. Google accounts for roughly 0.013% of the world’s energy use. It uses enough energy to continuously power 200,000 homes.a

2. According to Google, the energy it takes to conduct 100 searches on its site is equivalent to a 60-watt light bulb burning for 28 minutes. Google uses about 0.0003 kWh of energy to answer the avenge search query, which translates into about 0.2 g of carbon dioxide released.a

3. The United States produces half of its electricity from coal. China uses coal to generate more than three-fourths of its electricity. Australia, Poland, and South Africa produce an even greater percentage. Overall, coal makes up 2/5 of the world’s electricity generation.e

4. Ten countries produce 2/3 of the world’s oil and hold the same percentage of known reserves. Saudi Arabia tops both lists.e

5. Ten countries produce 2/3 of the world's natural gas and hold about the same percentage of known reserves.e

6. The United States produces more nuclear-generated electricity than any other country, nearly 1/3 of the world’s total. The second largest producer is France, which generates more than 3/4 of its electricity in nuclear reactors.f

7. The most powerful hydroelectric project in the world is China’s Three Gorges Dam. The controversial and enormous power plant brings power to millions of Chinese villagers and will generate more than 22,000 megawatts from six generators.d

8. In 2007, wind produced 1.3% of the electricity in the world. The world’s largest wind farm is the Horse Hollow Wind Energy Center near Abilene, Texas. Covering 92 square miles, the center has more than 400 turbines that are 262 feet tall. They produce 735 megawatts of electricity.d

9. Approximately 30% of energy used in buildings is used inefficiently or unnecessarily.h

10. Over 86% of the energy used in the U.S. each year is from the combustion of fossil fuels.h

Developers might construct homes differently if they had to pay the utilities

1. Some researchers suggest that if developers had to prepay 50 years’ worth of utility bills, they would construct buildings differently.h

2. Cooling and heating costs make up approximately 1/2 of an average U.S. home’s total energy bill.h

3. On average, one pool pump consumes electricity equal to 44% of the annual electricity consumption of a typical California household. There are over 7 million pools in America.h

4. In the last 50 years, atmospheric CO2 has shot up to levels unprecedented in the previous 400,000 years. The man-made injection of CO2 into the atmosphere is primarily from the burning of fossil fuels.h

5. American hospitals are some of the most energy-intense buildings on the planet.h

6. Electric utilities are the largest source of greenhouse gas in America.h

7. In 2008, the Wall Street Journal reported that transportation fuel consumption in the U.S. would grow from 150 billion gallons annually in 2020 to over 250 billion gallons by the middle of this century. Researchers hypothesize that we would have to export trillions of dollars to oil producing countries, which would compromise our currency, our economy, and our environment.h

8. Lighting currently accounts for about 20% of U.S. electricity consumption.h

9. James Hansen, director of NASA’s Goddard Institute for Space Studies, has argued, “Coal is the single greatest threat to civilization and all life on our planet.” In America, burning coal releases more CO2 in the air than all cars and trucks combined.h

A PlayStation 3 uses more energy than a refrigerator

1. In the average home, 75% of the electricity used to power home electronics is consumed while the products are turned off. The average desktop computer idles at 80 watts, while the average laptop idles at 20 watts. A Sony PlayStation 3 uses about 200 watts and nearly as much when idle. Idle power consumes more electricity than all the solar panels in America combined.h

2. On a hot summer afternoon, California consumes the entire output of two large nuclear reactors pumping water.h

3. One ceiling fixture can use $2,000 to $5,000 of electricity over its useful life.h

4. The most energy-intensive part of the food chain is the kitchen. Much more energy is used to refrigerate and prepare food in the home than is used to produce it in the first place.h

5. China has taken over the U.S. as both the world’s largest CO2 emitter and the world’s largest energy consumer.e

6. Heating and cooling rooms use the most energy in American homes today.e

7. Civilization’s first significant energy invention was fire. It was only about 5,000 years ago that humans began using other energy sources such as wind. In America, the first natural gas light was created in 1821. The first oil well was dug in 1859. The first gasoline car was built in 1892.c

Thomas Edison built the first power plant

1. Thomas Edison built the first power plant, and in 1882 his Pearl Street Power Station sent electricity to 85 buildings. People were initially afraid of electricity and parents would not let their children near the lights.c

2. English polymath Thomas Young (1773-1829) was the first to use the word “energy” in its current sense, replacing the traditional term vis viva, meaning “living force.”c

3. In the United States, petroleum provides the most energy, more than coal, natural gas, or solar energy.e

4. Hydropower is the main renewable energy source the U.S. relies on—more than wind, solar, or geothermal power.g

5. Coal generates more electricity than any other source. It produces twice as much electricity as natural gas.e

6. America burns nearly half of the world’s gasoline.e

7. More than 1/5 of the world’s primary energy is used for transport, followed by industry, construction, and agricultures. Much is in the form of gasoline, of which nearly 792.5 million gallons is burned every day.e

8. The top seven oil consumers combined use more than half of the world’s total. The United States alone uses more than a quarter.e

9. A “watt” is a unit of power that measures the rate of producing or using energy. The term was named after Scottish engineer James Watt (1736-1819), who developed an improved steam engine. Watt measured his engine’s performance in horsepower. One horsepower equaled 746 watts.e

10. Just 1/3 of the energy in burning coal reaches the consumer as electricity.e

11. Researches note that energy is the key “to the advancement of civilization” and that energy is the catalyst that allows human societies to evolve.d

12. The word “energy” comes from the Greek energeia, meaning operation, activity.d

13. Energy cannot be destroyed or created—only transformed.c

14. Albert Einstein defined energy as mass multiplied by the speed of light squared, or e=mc2.c

15. Food contains energy, which is measured in calories or joules.c

The world's oil reserves will last until 2052

1. According to the World Fact Book 2008, the world’s oil reserves will last until 2052 and gas reserves will last until 2065.e

2. The World Coal Institute says that, at current production levels, proven coal reserves are estimated to last 147 years. That means no more coal after 2155.e

3. More than 1/3 of the world’s crude oil is refined into gasoline. Other main products are distillate fuel oil (mainly diesel oil) and jet fuel (mainly kerosene).e

4. Inefficient appliances, drafty windows and doors, poor insulation, and other fixable energy wasters cost U.S. consumers an estimated $300 billion a year—more than the U.S. military budget.e

5. If a person yelled for 8 years, 7 months, and 6 days, he or she would produce enough energy to heat one cup of coffee.e

6. A hurricane releases 50 trillion to 200 trillion watts of heat energy. This is as much energy as a 10-megaton nuclear bomb exploding every 20 minutes.

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If you put a

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There is ice cream that is energy the largest ice cream in the world

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batteries also have energy in them.

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Food gives us energy. Sugary foods give a lot. That's the reason for sugar rushes.

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The sun makes solar power:

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www.brainpop.com/science/energy/batteries/ I t

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When people use electricity, it is probably powered generated by burning coal or some other type of nonrenewable force.

Renewable - an energy source that can be replenished easily
Nonrenewable - an energy source that cannot be replenished easily

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The sun is powered by energy. Solar flares can be caused by extra energy.

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energy is the capacity and power in humans/things. There are different types of energy such as mechanical, nuclear, and electric.

10 facts about energy below...

1. Renewable Energy creates three-times more jobs than fossil fuels.

2. Fossil fuels get 4 times the subsidy of renewables.

3. Renewable energy is expected to jump to 25 percent of global gross power generation in 2018, a rise on 20 percent in 2011 and 19 percent in 2006.

4. One wind turbine is able to generate enough electricity to power up to 1,400 house holds.

5. Within a 5-year period, Portugal’s electric grid jumped from 15 percent to 45 percent renewables.

6. If taken advantage of to its fullest extent, sunlight that beams on the earth for one hour could meet world energy demands for an entire year.

7. Europe and North Africa could run on 100% renewable energy by 2050.

8. In 2014, China built two wind turbines per day.

9. Solar power may account for the world's main energy source of power by 2050.

10. 20% of the UK's population live in areas suitable for Geothermal District Heating using heat pumps.

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This video shows what is energy:
https://www.youtube.com/watch?v=o_5oYuDY2qM

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Energy can power things like animals. Live things get energy from eating. Nutrients are extracted in your body to get energy.