1. Unit C Weather and the Solar System

2. What is the atmosphere? a.Water vapor in the air around Earth b.The oxygen in the air around Earth c.The clouds in the air around Earth d.The mixture of gases that surrounds Earth

3. The force that air exerts on a given area is called a.Air mass b.Air pressure c.Jet stream d.Wind

4. Which instrument measures air pressure? a.Weather vane b.Barometer c.Rain gauge d.Thermometer

5. What causes air pressure a.Moving clouds b.Falling rain c.Moving air particles d.Changing weather

6. What happens to air as you climb a high mountain? a.It thins b.It thickens c.It gets wetter d.It does not change

7. Which is NOT a reason the Earth’s surface heats unevenly? a.Earth’s shape b.Earth’s core c.Earth's motions d.Earth’s tilt

8. What kind of weather would you expect if you saw this cloud in the sky? a.Severe weather b.Light rain c.A tornado d.Sunny day

9. Wind is… a.Changing air pressure b.Moving clouds c.Moving air particles d.Blowing rain

10. In the spring, snow melting on mountains can cause a a.Blizzard b.Flood c.Drought d.Volcano

11. The word solar refers to a.The Sun b.The Moon c.Earth d.Outer space

12. Which object can be classified with Earth and Jupiter a.An asteroid b.The Moon c.Saturn d.The Sun

13. Our solar system is one part of a larger a.Asteroid b.Comet c.Galaxy d.Planet

14. The arrow in this diagram is pointing to a a.Star b.Planet c.Moon d.Comet

15. The Sun is a(n) a.Asteroid b.Meteor c.Planet d.Star

16. Gravity causes a.Objects to fall b.Objects to raise c.Objects to fly d.Objects to float

17. What is an orbit? a.A path toward an object b.A path around an object c.A path away from an object d.A path above an object

18. To rotate means to a.Orbit b.Sway c.Revolve d.Spin

19. What holds Earth in orbit? a.Movement b.Rotation c.Gravity d.Revolution