Twenty Questions

6th grade

Chapter 1

The Atmosphere

Twenty Questions

1 2 3 4 5

6 7 8 9 10

11 12 13 14 15

16 17 18 19 20

1. What is the condition of the Earth’s atmosphere at a particular time and place?

weatherweather

2. What is the layer of gases that surrounds the Earth?

atmosphereatmosphere

3. What is the most abundant gas in the atmosphere?

nitrogennitrogen

4. What is water in the form of gas?

water vaporwater vapor

5. What is a form of oxygen that has three oxygen atoms in each molecule instead of the usual two?

ozoneozone

6. When fuels such as coal and gasoline are burned, they release ____.

carbon dioxidecarbon dioxide

7. What is most air pollution the result of __________ ?

burning fossil fuelsburning fossil fuels

8. What layer of the atmosphere does the aurora borealis occur?

ionosphereionosphere

9. How are the four main layers of theatmosphere classified?

according to according to changes in changes in

temperaturetemperature

10. Air pressure _________ as altitude increases.

decreasesdecreases

11.What is the outer layer of the atmosphere?

exosphereexosphere

12. What layer of the atmosphere is divided into 2 layers? Name the 2 layers.

ThermosphereThermosphere1.1. ionosphereionosphere2.2. exosphereexosphere

13. layer of the atmosphere where most meteoroids burn up

mesospheremesosphere

14. Layer where weather occurs

tropospheretroposphere

15. The coldest layer of the atmosphere

mesospheremesosphere

16. elevation, or distance above sea level

altitudealtitude

17. Instrument used to measure changes in air pressure

barometerbarometer

18. 2 common units used to measure air pressure

1.1. InchesInches

2.2. Millibars Millibars

19. The result of the weight of acolumn of air pushing down on an area

air pressureair pressure

20. Communication satellites orbit Earth in this layer of the atmosphere.

exosphereexosphere