1. Clicker Questions Chapter 5 Earth and Its Moon Copyright © 2010 Pearson Education, Inc.

2. a) an atmosphere. b) a hydrosphere. c) a magnetosphere. d) It lacks all of the above. Question 1 The Moon’s internal structure is similar to Earth’s, but the Moon lacks

3. a) an atmosphere. b) a hydrosphere. c) a magnetosphere. d) It lacks all of the above. Question 1 The Moon’s internal structure is similar to Earth’s, but the Moon lacks Both the Earth and Moon have a core, mantle, and crust, but the Earth has a liquid water-rich layer, air, and a magnetic field.

4. The principal greenhouse gases in our present atmosphere are Question 2 a) hydrogen and helium. b) oxygen and nitrogen. c) water vapor and carbon dioxide. d) methane and ammonia. e) sulfuric acid vapor and CO 2.

5. Question 2 a) hydrogen and helium. b) oxygen and nitrogen. c) water vapor and carbon dioxide. d) methane and ammonia. e) sulfuric acid vapor and CO 2. The principal greenhouse gases in our present atmosphere are A greenhouse gas lets shorter- wavelength light pass through, but absorbs longer-wavelength light.

6. Without the greenhouse effect in our atmosphere Question 3 a) we would not have to worry about ecological problems. b) the Earth’s oceans would be frozen. c) the amount of nitrogen & oxygen would be much less. d) the icecaps would have melted. e) global warming would still occur.

7. Without the greenhouse effect in our atmosphere Question 3 a) we would not have to worry about ecological problems. b) the Earth’s oceans would be frozen. c) the amount of nitrogen & oxygen would be much less. d) the icecaps would have melted. e) global warming would still occur. Earth’s greenhouse effect makes the planet about 40 ° C hotter than it would otherwise be. This raises the average surface temperature above the freezing point of water.

8. The region around Earth where the magnetic field traps charged particles is the Question 4 a) ozone layer. b) exosphere. c) Van Allen radiation belts. d) corona. e) aurora borealis and australis.

9. The region around Earth where the magnetic field traps charged particles is the Question 4 a) ozone layer. b) exosphere. c) Van Allen radiation belts. d) corona. e) aurora borealis and australis. The Earth’s magnetosphere influences the charged particles of the solar wind. Some particles are channeled toward the poles, creating the aurora.

10. At what lunar phase would the variation between high & low tides be greatest? Question 5 a) new moon b) waxing crescent moon c) full moon d) third quarter moon e) both new and full moon

11. At what lunar phase would the variation between high & low tides be greatest? Question 5 a) new moon b) waxing crescent moon c) full moon d) third quarter moon e) both new and full moon At new and full moon phases, the Sun and Moon combine to stretch the Earth and its oceans even more. We see higher high tides and lower low tides.

12. Question 6 a) the Sun’s gravity b) Earth’s magnetic field c) Earth’s tidal force d) the solar wind e) the Moon’s magnetic field What force riveted the Moon’s near side to constantly face Earth?

13. Question 6 a) the Sun’s gravity b) Earth’s magnetic field c) Earth’s tidal force d) the solar wind e) the Moon’s magnetic field What force rivets the Moon’s near side to constantly face Earth? Just as the Moon creates tides on Earth with its gravitational force, the Earth affects the Moon, too. Because of Earth’s tidal force, the Moon spins once a month.

14. Question 7 Lunar maria are found a) uniformly all over the Moon. b) mostly on the side facing Earth. c) mostly on the far side of the Moon. d) only in the dark areas, out of sunlight. e) in the highlands, among mountains.

15. Question 7 Lunar maria are found a) uniformly all over the Moon. b) mostly on the side facing Earth. c) mostly on the far side of the Moon. d) only in the dark areas, out of sunlight. e) in the highlands, among mountains. Because the Moon keeps its near side always facing Earth, that side has a thinner crust, and is also less cratered.

16. Question 8 A planetary atmosphere with ozone could protect surface dwellers from a) ultraviolet radiation. b) charged particles in the solar wind. c) meteor impacts. d) optical radiation. e) radar waves.

17. Question 8 A planetary atmosphere with ozone could protect surface dwellers from a) ultraviolet radiation. b) charged particles in the solar wind. c) meteor impacts. d) optical radiation. e) radar waves. Ozone in the stratosphere (about 30-50 km high) absorbs UV light, and heats the upper atmosphere.

18. Question 9 Which of these is NOT a result of the Earth’s magnetic field? a) a compass pointing north b) aurorae c) the Van Allen radiation belts d) volcanic eruptions e) the comet-like tail of charged particles that extends past our Moon

19. Question 9 Which of these is NOT a result of the Earth’s magnetic field? a) a compass pointing north b) aurorae c) the Van Allen radiation belts d) volcanic eruptions e) the comet-like tail of charged particles that extends past our Moon Our planet’s magnetosphere is generated by the Earth’s rotation and its liquid metal core. In contrast, the Moon doesn’t have a magnetic field.

20. Question 10 Today, which of these theories best explains the Moon’s origin? a) The fission theory b) The giant impact theory c) The capture theory d) The co-formation theory e) The fusion theory

21. Question 10 Today, which of these theories best explains the Moon’s origin? a) The fission theory b) The giant impact theory c) The capture theory d) The co-formation theory e) The fusion theory The giant impact theory seems to explain why the Moon is similar to Earth’s mantle, and why it doesn’t have a dense core.