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Science Warm-Up Look at the plastic bottle is there anything in it? How do you know? Pg 2 Look at the plastic bottle is there anything in it? How do you.

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Presentation on theme: "Science Warm-Up Look at the plastic bottle is there anything in it? How do you know? Pg 2 Look at the plastic bottle is there anything in it? How do you."— Presentation transcript:

1 Science Warm-Up Look at the plastic bottle is there anything in it? How do you know? Pg 2 Look at the plastic bottle is there anything in it? How do you know? Pg 2

2 An Ocean of Air

3 Explore on your own See if you can come up with evidence that air is real. Please complete Is Air There? Activity See if you can come up with evidence that air is real. Please complete Is Air There? Activity

4 How Is Air Like an Ocean? How Is Air Like an Ocean? Air and water move around without breaking apart, because they are fluids. Air and water move around without breaking apart, because they are fluids. –Air isn't a liquid, it's a gas, another kind of fluid.

5 What Makes Up Air? Air is made of molecules of different types of gases Air is made of molecules of different types of gases –The two most common Nitrogen or N 2 (78%) Nitrogen or N 2 (78%) Oxygen or O 2 (21%) Oxygen or O 2 (21%) –Other trace gases (1% together) Argon Carbon Dioxide Neon Helium Methane Krypton Hydrogen –Water vapor –Particles

6 Particles SmokeDust

7 Does the percentages of gases in the atmosphere change? Explain your answer Explain your answer

8 Atmosphere We all live in the ocean of air, called the atmosphere. We all live in the ocean of air, called the atmosphere. – –A layer of gases that surround our planet

9 How much air? If you were to compare the Earth to an ordinary apple, the atmosphere would be only as thick as the apple's skin. If you were to compare the Earth to an ordinary apple, the atmosphere would be only as thick as the apple's skin. Our atmosphere is only about 500 miles thick Our atmosphere is only about 500 miles thick –With the majority of the gases being found down in the lowest layer of the atmosphere

10 Functions of the Atmosphere Holds oxygen Holds oxygen Holds carbon dioxide Holds carbon dioxide Holds nitrogen Holds nitrogen Regulates temperature Regulates temperature Protects from UV radiation Protects from UV radiation Protects from small meteors Protects from small meteors Necessary for generating sound Necessary for generating sound Necessary for movement of flying animals and aircraft Necessary for movement of flying animals and aircraft

11 Homework Have you defined the hot vocab terms Have you defined the hot vocab terms Did you draw a picture of each term Did you draw a picture of each term


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