1. Next On each slide, formulate the answer in your head, and then click the button to see if you are correct.

2. Next 1. What is the term for the layer of air that surrounds Earth? The atmosphere

3. At arrow D Next

4. Atmospheric pressure is on all sides of the blimp. Next

5. The troposphere Next

6. Atmospheric pressure decreases the higher you climb. Next

7. A. Air lifts objects. B. Air pushes on objects. C. Air drops objects. D. Air pulls objects. Next

8. A. Moist air B. Thin air C. Dry air. D. Thick air Next

9. Altitude Note: “Elevation” refers to height above sea level.

10. Volume Next water vaporbarometer temperature troposphere volume variable air pressure altitude

11. Next A barometer. There are two types: 1) A mercury barometer works by measuring the pressure of air on an airtight tube of mercury. 2) An aneroid barometer measures changes in the size of an airtight container.

12. Back to first slide? YOU are responsible for your own learning; keep reviewing until you can answer and understand all questions.