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EARTH'S ATMOSPHERE
A troposphere B stratosphere C mesosphere D thermosphere
- The graph below shows the average concentration of ozone in Earth's atmosphere over Arizona during 4 months of the year. Which layer of Earth's atmosphere contains the greatest concentration of ozone? A troposphere B stratosphere C thermosphere D mesosphere
- In which atmospheric layer is most water vapor found? A 50 km B 66 km C 82 km D 90 km
- What is the approximate altitude of the mesopause in the atmosphere? A troposphere B stratosphere C mesosphere D thermosphere
- The greatest atmospheric pressure occurs in the A B C D
- Which graph best represents the effect that heating has on air density in the troposphere?
A Density decreases. B Density increases. C Density remains the same.
- According to the graph below, what happens to the density of a mass of air when its water vapor content increases? A troposphere, only B hydrosphere, only C troposphere and hydrosphere, only D troposphere, hydrosphere, and crust
- The element oxygen is found in the Earth's A decreases, only B increases, only C decreases, then increases D increases, then decreases
- As the altitude increases within Earth’s stratosphere, air temperature generally
A SiO 2 B H 2 O C N 2 D CO 2
- The diagram below shows four different chemical materials escaping from the interior of early Earth. Which material contributed least to the early composition of the atmosphere? A troposphere and stratosphere B troposphere and mesosphere C stratosphere and thermosphere D mesosphere and thermosphere
- In which two temperature zones of the atmosphere does the temperature increase with increasing altitude? A It is warmer at the top than at the bottom. B It is located 75 kilometers above sea level. C It has greater pressure at the top than at the bottom. D It absorbs large amounts of water vapor from the troposphere.
- Which statement best describes the stratosphere? A crust and hydrosphere B hydrosphere and troposphere C troposphere and core D core and crust
- In which two Earth regions is oxygen the second most abundant element by volume? A oxygen B nitrogen C hydrogen D carbon dioxide
- Which element has the highest percentage by volume in the troposphere?
A thermosphere, mesosphere, stratosphere, troposphere B troposphere, stratosphere, mesosphere, thermosphere C stratosphere, mesosphere, troposphere, thermosphere D thermosphere, troposphere, mesosphere, stratosphere
- Which list shows atmospheric layers in the correct order upward from the Earth's surface? A decrease B increase C remain the same
- As a stationary airmass is heated, its density will generally A decreases, only B increases, only C remains the same D decreases, then increases
- As altitude within the troposphere increases, the amount of water vapor generally A 7.0 km B 17 km C 27 km D 37 km
- What is the approximate elevation above sea level at which atmospheric pressure is 10 – atmosphere? A absorbed in the thermosphere B absorbed in the mesosphere C reflected by the stratosphere D reflected by the troposphere
- At an altitude of 95 miles above Earth’s surface, nearly 100% of the incoming energy from the Sun can be detected. At 55 miles above Earth’s surface, most incoming x-ray radiation and some incoming ultraviolet radiation can no longer be detected. This missing radiation was most likely A Each is a point of maximum temperature in its layer of the atmosphere. B Each is an interface between two layers of the atmosphere. C Each is a region of increasing pressure within the atmosphere. D Each is a zone of decreasing water vapor content within the atmosphere.
- What do the tropopause, stratopause, and mesopause all have in common?
A 10 km B 30 km C 70 km D 100 km
- At what approximate altitude in the atmosphere can stratospheric ozone be found? A stream erosion B chemical weathering C volcanic eruptions D plant transpiration
- Most scientists believe Earth’s Early Archean atmosphere was formed primarily by gases released from A B C D
- Which pie graph correctly shows the percentage of elements by volume in Earth’s troposphere? A troposphere B stratosphere C mesosphere D thermosphere
- An air temperature of 95ºC most often exists in which layer of the atmosphere? A decrease, only B increase, only C decrease, then increase D increase, then decrease
- As altitude increases from the tropopause to the mesopause, the atmospheric temperature will
A lithosphere, hydrosphere, and troposphere B stratosphere, mesosphere, and thermosphere C asthenosphere, lithosphere, and hydrosphere D hydrosphere, troposphere, and stratosphere
- The diagram below shows spheres associated with Earth. Which spheres are zones of Earth's atmosphere? A troposphere B stratosphere C mesosphere D thermosphere
- The altitude of the ozone layer near the South Pole is 20 kilometers above sea level. Which temperature zone of the atmosphere contains this ozone layer?
A The atmosphere is layered, with each layer possessing distinct characteristics. B The atmosphere is a shell of gases surrounding most of the Earth. C The atmosphere's altitude is less than the depth of the ocean. D The atmosphere is more dense than the hydrosphere but less dense than the lithosphere.
- Which statement most accurately describes the Earth's atmosphere? A 21% B 33% C 46% D 94%
- What is the approximate percent of oxygen by volume present in Earth’s lower atmosphere? A decreases, only B increases, only C remains the same D decreases, then increases
- If atmospheric pressure measurements were taken at regular intervals from sea level to the stratopause, the measurements would most likely show that the pressure A B C D
- Which graph best represents the relationship between air temperature and elevation in the troposphere?
- Base your answer to the following question on the map below, which shows the position of the jet stream relative to two air masses and a low-pressure center ( L ) over the United States. A thermosphere B mesosphere C stratosphere D troposphere In which layer of the atmosphere is this jet stream located? A decreases B increases C remains the same
- When molecules of water evaporate into the air and replace the heavier molecules of oxygen and nitrogen, the density of the air generally A outgassing from Earth’s interior B erosion of Earth’s surface C decay of microorganisms in Earth’s oceans D radioactive decay of elements in Earth’s core
- Scientists have inferred that Earth’s original atmosphere was formed by the
Answer Key
Earth's Atmosphere
1. B
2. A
3. C
4. A
5. A
6. A
7. D
8. B
9. B
10. A
11. A
12. C
13. A
14. B
15. B
16. B
17. A
18. A
19. B
20. A
21. B
22. A
23. D
24. D
25. B
26. B
27. C
28. A
29. D
30. D
31. B
32. B
33. B
34. B
35. C
36. D
37. D
38. A
39. A
40. A
41. A
42. D
43. A
44. A
45. A
