3Explore on your ownSee if you can come up with evidence that air is real. Please complete Is Air There? Activity
4How Is Air Like an Ocean?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.
5What Makes Up Air?Air is made of molecules of different types of gasesThe two most commonNitrogen or N2 (78%)Oxygen or O2 (21%)Other trace gases (1% together)ArgonCarbon DioxideNeonHeliumMethaneKryptonHydrogenWater vaporParticles
7Does the percentages of gases in the atmosphere change? Explain your answer
8Atmosphere We all live in the ocean of air, called the atmosphere. A layer of gases that surround our planet
9How 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.Our atmosphere is only about 500 miles thickWith the majority of the gases being found down in the lowest layer of the atmosphere
10Functions of the Atmosphere Holds oxygenHolds carbon dioxideHolds nitrogenRegulates temperatureProtects from UV radiationProtects from small meteorsNecessary for generating soundNecessary for movement of flying animals and aircraft
11Homework Have you defined the hot vocab terms Did you draw a picture of each term