Geology 109 (BYU-Radebaugh) CH 1
Study online at https://quizlet.com/_1ii1m4
1. Planets are largely composed of metals, silicates, ices, and gases.
2. The small inner planets are Mercury, Venus, Earth, and Mars.
3. The inner planets are composed of silicate rocks and metals.
4. The large outer planets are Jupiter, Saturn, Uranus, and Neptune.
5. The outer planets are composed of gaseous hydrogen and helium and ice, and have large
systems of icy moons.
6. Comets are small icy bodies formed in the outer solar system
7. Planets are objects that orbit (or revolve) around a central luminous
star.
8. T or F: Planets have nuclear fusion FALSE. Planets are too small for nuclear fusion reactions
in their core. to have initiated within their interiors.
9. The principal planets in order out- Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus,
ward from the Sun are Neptune, and Pluto.
10. T or F: A planetary body is a gener- TRUE.
al term referring to any body orbit-
ing a star.
11. The inner planets (Mercury, Venus, the terrestrial planets (Earth-like).
Earth, and Mars) are also called
12. T or F: The four gas planets have TRUE.
no solid surfaces.
13. These planets have rings of small Jupiter, Saturn, Uranus, and Neptune.
particles encircling them.
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, Geology 109 (BYU-Radebaugh) CH 1
Study online at https://quizlet.com/_1ii1m4
14. Natural satellites, or moons, orbit Mercury and Venus.
every planet except
15. Jupiter has a miniature planetary four large moons and at least 12 smaller ones.
system comprised of
16. Saturn is also the center of a minia- 17 planetary bodies.
ture planetary system, involving
more than
17. T or F: Mercury has an atmos- FALSE. With no atmosphere to moderate its environment,
phere. the temperature range at the surface is extreme.
18. Mercury's surface is dominated by circular craters formed when large meteorites struck it.
19. T or F: Venus's orbit is closer to a TRUE.
perfect circle than any of the plan-
ets.
20. T or F: Venus's rotation is retro- TRUE.
grade or backward.
21. The surface of Venus is totally obscured by a thick atmosphere composed mostly
of carbon dioxide with sulfuric acid clouds.
22. T or F: Venus's temperature is cool- FALSE.
er than that of Mercury's.
23. Huge oceans of liquid water cover 70 percent of Earth.
24. T or F: Earth has a lot of impact FALSE. Such structures are rare on Earth.
craters.
25.
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Study online at https://quizlet.com/_1ii1m4
1. Planets are largely composed of metals, silicates, ices, and gases.
2. The small inner planets are Mercury, Venus, Earth, and Mars.
3. The inner planets are composed of silicate rocks and metals.
4. The large outer planets are Jupiter, Saturn, Uranus, and Neptune.
5. The outer planets are composed of gaseous hydrogen and helium and ice, and have large
systems of icy moons.
6. Comets are small icy bodies formed in the outer solar system
7. Planets are objects that orbit (or revolve) around a central luminous
star.
8. T or F: Planets have nuclear fusion FALSE. Planets are too small for nuclear fusion reactions
in their core. to have initiated within their interiors.
9. The principal planets in order out- Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus,
ward from the Sun are Neptune, and Pluto.
10. T or F: A planetary body is a gener- TRUE.
al term referring to any body orbit-
ing a star.
11. The inner planets (Mercury, Venus, the terrestrial planets (Earth-like).
Earth, and Mars) are also called
12. T or F: The four gas planets have TRUE.
no solid surfaces.
13. These planets have rings of small Jupiter, Saturn, Uranus, and Neptune.
particles encircling them.
1/6
, Geology 109 (BYU-Radebaugh) CH 1
Study online at https://quizlet.com/_1ii1m4
14. Natural satellites, or moons, orbit Mercury and Venus.
every planet except
15. Jupiter has a miniature planetary four large moons and at least 12 smaller ones.
system comprised of
16. Saturn is also the center of a minia- 17 planetary bodies.
ture planetary system, involving
more than
17. T or F: Mercury has an atmos- FALSE. With no atmosphere to moderate its environment,
phere. the temperature range at the surface is extreme.
18. Mercury's surface is dominated by circular craters formed when large meteorites struck it.
19. T or F: Venus's orbit is closer to a TRUE.
perfect circle than any of the plan-
ets.
20. T or F: Venus's rotation is retro- TRUE.
grade or backward.
21. The surface of Venus is totally obscured by a thick atmosphere composed mostly
of carbon dioxide with sulfuric acid clouds.
22. T or F: Venus's temperature is cool- FALSE.
er than that of Mercury's.
23. Huge oceans of liquid water cover 70 percent of Earth.
24. T or F: Earth has a lot of impact FALSE. Such structures are rare on Earth.
craters.
25.
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