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Write the definition of matter in your own words.

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Write the definition of matter in your own words.

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Give 5 examples of each of the three states of matter.

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Give 5 examples of each of the three states of matter.

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What are the processes of the water cycle?

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What are the processes of the water cycle?

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Give the definitions for each process of the water cycle.

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Give the definitions for each process of the water cycle.

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The water cycle describes how Earth's water is not only always changing forms, between liquid (rain), solid (ice), and gas (vapor), but also moving on, above, and in the Earth. This process is always happening everywhere.

Back to the water cycle on the USGS Water Science School.

The tiny cloud droplets combine with each other and grow into bigger water drops.

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Interactive Water Cycle Diagram for Kids (Beginner)

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The Water Cycle for Kids, from the USGS Water Science School.

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Complete the opinion writing prompt on a sheet of notebook paper.

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Complete the opinion writing prompt on a sheet of notebook paper.

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Water survey: future water problems, USGS Water Science School

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Water Science Opinion Survey: What will be the world's biggest water problem in the future, from the USGS Water Science School.

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The Sun's Energy

Our sun is amazing! The sun is the star that our earth spins around. It warms our planet so we don't freeze. It warms our oceans, lakes, and pools so we can go swimming and not get hypothermia. It helps our plants grow so we can eat delicious oranges, peaches, bananas, and other great foods. But more than that, the energy from the sun also powers the winds, the ocean currents, and the water cycle. If we didn't have the sun, we wouldn't have wind. We wouldn't have the ocean currents that many sea creatures rely on to travel far distances. And, we wouldn't have the water cycle that gives us a continuous supply of fresh water. How does all of this work, you ask? Let's find out.

The Sun's Energy for Winds

Without the sun, we wouldn't have wind. Wind is the movement of air. How does the sun power the wind? The sun powers the wind by heating up our air. Different parts of the earth are closer to the sun depending upon the earth's rotation, so different areas of the earth will have warmer air. Also, different kinds of materials absorb the sun's heat faster than others.

As you may know, heat rises. So, because these warmer parts of the earth have warmer air, the air in these parts will start to rise. This causes the cooler air from the surrounding areas to come in to replace the warmer air that is rising. This causes the wind that you feel on a breezy day.

The Sun's Energy for Ocean Currents

The same thing happens with the ocean currents. An ocean current is a continuous flow of water in a particular direction. You can liken it to wind, except this occurs underwater. The sun warms up parts of the oceans. Warm waters rise just like warm air rises. So, as the warmer ocean waters begin to rise in a particular area, the cooler ocean waters from a different area will move in to replace the warmer ocean waters, and this creates our ocean currents. Because our oceans are so large, these currents can also go for very long distances. Ocean currents, just like wind, travel from a cooler place to a warmer place.

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currents & the water cycle - video & lesson transcript | study.com

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The Sun as a Source of Energy for Winds, Currents & the Water Cycle - Video & Lesson Transcript | Study.com

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Our sun is amazing! The sun is the star that our earth spins around. It warms our planet so we don't freeze. It warms our oceans, lakes, and pools so we can go swimming and not get hypothermia. It helps our plants grow so we can eat delicious oranges, peaches, bananas, and other great foods.

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What three types of heat transfer have we learned about?

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What three types of heat transfer have we learned about?

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Complete a tree map using the information from this website to organize your thinking.

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Complete a tree map using the information from this website to organize your thinking.

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Three Methods of Heat Transfer: Conduction, Convection and Radiation

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How heat energy can be transferred from one place to another by conduction, convection and radiation