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- 1. Multiple Choice
The true shapes of planetary orbits are known as ________
ellipses
circles
hyperbolas
parabolas
- 2. Multiple Choice
When Earth is the farthest from the Sun, it is said to be in the perihelion position.
False
True
- 3. Multiple Choice
When Earth is the nearest from the Sun, it is said to be in the aphelion position.
False
True
- 4. Multiple Choice
At which position might the moon block part of the Sun, making a solar eclipse visible from Earth?
7
2
9
3
- 5. Multiple Choice
The planets stay in orbit around the Sun because of a balance between ________ and ________.
force
speed
energy
gravity
- 6. Multiple Choice
The diagram below illustrates the relationship of the Moon and the Earth during a __________ eclipse.
solar
lunar
- 7. Multiple Choice
The animation below illustrates Kepler's __________ law.
first
second
third
- 8. Multiple Choice
The animation below illustrates Kepler's __________ law.
first
second
third
- 9. Multiple Choice
What revolves around the Earth?
The moon
The Sun
Mars
Venus
- 10. Multiple Choice
Calculate the eccentricity of this planet.
5.4
0.67
0.25
0.19
- 11. Multiple Choice
If the distance between the objects increases by 2, and mm is doubled, what happens to the gravitational force?
The gravitational force stays the same.
The gravitational force increases by 2.
The gravitational force decreases by 1/4.
The gravitational force decreases by 1/2.
- 12. Multiple Choice
When is the Earth moving the fastest?
July
November
January
February
- 13. Multiple Choice
When is the Earth in perihelion?
July
November
January
February
- 14. Multiple Choice
When is the Earth in aphelion?
July
November
January
February
- 15. Multiple Choice
Which planet orbits the fastest around Star A?
Planet X
Planet Y
Planet Z
- 16. Multiple Choice
If the Earth were twice as massive as it is now, then the gravitational force between it and the Sun would be
the same
twice as great
four times as great
half as great
- 17. Multiple Choice
The gravitational force between two objects depends on
the mass of the objects and the distance between their centers
the mass of the objects and half the distance between them
the weight of the objects and the distance between their centers
the circumference of the objects and the distance between them
- 18. Multiple Choice
What creates gravity?
The motion of the objects.
The mass of the objects.
The energy of the objects.
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