i swear i litterly have minutes to get this done pllzz anyone out their answer promise to give brainlist plzzzzzzzzzzzzz i reallly need this badly 1. The apparent westward movement of a planet against the background of stars is called ____. (1 point)
retrograde motion
revolution
rotation
universal gravitation
2. One astronomical unit (AU) averages about ____. (1 point)
39 million kilometers
93 million kilometers
150 million kilometers
210 million kilometers
3. According to the third law of planetary motion, the period of revolution of a planet is related to
the planet’s ____.
(1 point)
distance to the sun
size
gravitational attraction
orbital speed
4. Earth is closest to the sun at a point called ____. (1 point)
perihelion
aphelion
apogee
precession
5. The moon is closest to Earth at ____. (1 point)
perigee
apogee
perihelion
aphelion
6. During the period d that the moon’s phases are changing from new to full, the moon is ____. (1 point)
waning
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approaching Earth
waxing
exhibiting retrograde motion
7. What must happen for a solar eclipse to occur? (1 point)
The moon must pass behind Earth.
The moon must be full.
The moon’s orbit must cross the plane of the ecliptic.
The moon’s orbit must not cross Earth’s penumbra.
8. Round depressions on the moon’s surface are called ____. (1 point)
highlands
maria
craters
meteorites
9. The oldest features on the moon are ____. (1 point)
highlands
maria
craters
regolith
10. The most obvious difference between terrestrial planets and Jovian planets is ____. (1 point)
color
size
orbital velocity
length of day
11. Which of the following is proportionally more abundant on terrestrial planets than on Jovian
planets?
(1 point)
hydrogen
silicate minerals
methane
ammonia ice
12. Olympus Mons, a volcano the size of Ohio, is found on ____. (1 point)
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Earth
Mars
Mercury
Saturn
13. Which planet has a greater mass than the combined mass of all the remaining planets and their
moons?
(1 point)
Venus
Saturn
Jupiter
Pluto
14. Which of the following planets is the smallest? (1 point)
Saturn
Venus
Mars
Mercury
15. The lowest surface temperature yet measured on any body in the solar system (–200°C) occurs
on ____.
(1 point)
Titan
Pluto
Triton
Neptune
16. Jupiter’s Great Red Spot is believed to be a ____. (1 point)
volcanic area
large desert
cyclonic storm
zone of high ammonia concentration
17. A comet’s tail always points ____. (1 point)
away from the sun
toward the sun
sideways
downward
18 The small particles that produce a streak of light upon entering Earth’s atmosphere are called (1 point)
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18. The small particles that produce a streak of light upon entering Earth s atmosphere are called
____.
(1 point)
comets
meteors
satellites
asteroids