Astronomy 4 Chapter 19
Multiple Choice
Identify the choice that best completes the statement or answers the question.
1. Which of the following is not a characteristic of the terrestrial planets?
a. low average density
b. orbits inside the asteroids
c. craters in old surfaces
d. small diameters
e. very few satellites
2. The age of the solar system is believed to be approximately 4.6 billions years old based on the data from
a. samples of lunar rocks.
b. samples of earth rocks.
c. samples of meteorites.
d. all of the above
e. none of the above
3. The condensation sequence suggests that ____ should condense closest to the sun.
a. Jovian planets
b. metals and metal oxides
c. silicates
d. ices of water, methane, and ammonia
e. low density materials
4. Which one of the following objects is most like the planetesimals that formed in the solar nebular?
a. asteroids
b. Earth
c. Saturn
d. Venus
e. the sun
5. The large planetesimals would have grown faster than the smaller planetesimals because
a. they were moving faster in their orbits than the smaller planetesimals.
b. their stronger gravity would pull in more material.
c. there was more material located near them that could be accreted.
d. the smaller planetesimals were covered by a layer of material that was lost during
collisions.
e. all of the above
6. Accretion among the grains in the solar nebula would have been aided by
a. static electricity.
b. gravity.
c. high-velocity collisions.
d. all of the above
e. none of the above
7.Once a terrestrial planet had formed from a large number of planetesimals, heat from ____ could have melted it and allowed it to differentiate into a dense metallic core and a lower density crust.
a. radioactive decay
b. the sun
c. volcanic eruptions
d. tidal forces
e. impacts of small meteorites
8. Compared to the terrestrial planets, Jovian planets
a. have a higher density.
b. have a smaller number of moons.
c. have a much larger diameter.
d. are much hotter.
9. The asteroid belt is found between which two planets?
a. Earth and Mars
b. Mars and Jupiter
c. Jupiter and Saturn
d. Venus and Earth
10. How is radioactive dating used to determine the age of an object?
a. The amounts of radioactive and decay material are compared to its half-life to
determine age.
b. The rate of radioactive decay is measured and compared to models.
c. The amount of decay product weighted to determine age.
d. The amount of heat generated by radioactive dating is measured to determine age.
Multiple Choice
Identify the choice that best completes the statement or answers the question.
1. Which of the following is not a characteristic of the terrestrial planets?
a. low average density
b. orbits inside the asteroids
c. craters in old surfaces
d. small diameters
e. very few satellites
2. The age of the solar system is believed to be approximately 4.6 billions years old based on the data from
a. samples of lunar rocks.
b. samples of earth rocks.
c. samples of meteorites.
d. all of the above
e. none of the above
3. The condensation sequence suggests that ____ should condense closest to the sun.
a. Jovian planets
b. metals and metal oxides
c. silicates
d. ices of water, methane, and ammonia
e. low density materials
4. Which one of the following objects is most like the planetesimals that formed in the solar nebular?
a. asteroids
b. Earth
c. Saturn
d. Venus
e. the sun
5. The large planetesimals would have grown faster than the smaller planetesimals because
a. they were moving faster in their orbits than the smaller planetesimals.
b. their stronger gravity would pull in more material.
c. there was more material located near them that could be accreted.
d. the smaller planetesimals were covered by a layer of material that was lost during
collisions.
e. all of the above
6. Accretion among the grains in the solar nebula would have been aided by
a. static electricity.
b. gravity.
c. high-velocity collisions.
d. all of the above
e. none of the above
7.Once a terrestrial planet had formed from a large number of planetesimals, heat from ____ could have melted it and allowed it to differentiate into a dense metallic core and a lower density crust.
a. radioactive decay
b. the sun
c. volcanic eruptions
d. tidal forces
e. impacts of small meteorites
8. Compared to the terrestrial planets, Jovian planets
a. have a higher density.
b. have a smaller number of moons.
c. have a much larger diameter.
d. are much hotter.
9. The asteroid belt is found between which two planets?
a. Earth and Mars
b. Mars and Jupiter
c. Jupiter and Saturn
d. Venus and Earth
10. How is radioactive dating used to determine the age of an object?
a. The amounts of radioactive and decay material are compared to its half-life to
determine age.
b. The rate of radioactive decay is measured and compared to models.
c. The amount of decay product weighted to determine age.
d. The amount of heat generated by radioactive dating is measured to determine age.
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