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- 1. Multiple Choice
The spinning of Earth on its axis is called revolution.
True
False
- 2. Multiple Choice
The study of the moon, stars, and other objects in space is called _____.
Astrology
Geography
Astronomy
Meteorology
- 3. Multiple Choice
The strength of the force of gravity between two objects depends on two factors: the masses of the objects and the distance between them.
True
False
- 4. Multiple Choice
_____ is the amount of matter in an object.
Mass
Weight
Gravity
Density
- 5. Multiple Choice
The force of gravity on an object is known as its ______.
Weight
Mass
Density
Volume
- 6. Multiple Choice
Tides are caused mainly by differences in how much the moon's gravity pulls on different parts of Earth.
True
False
- 7. Multiple Choice
Which tide is this image showing?
Spring tide
Neap tide
- 8. Multiple Choice
Which tide is this image showing?
Spring tide
Neap tide
- 9. Multiple Choice
Only one side of the moon from Earth because _______.
the moon does not rotate on its axis
the moon does not revolve around Earth
the moon rotates faster than it revolves
the moon revolves once and rotates once in the same period of time
- 10. Multiple Choice
What force must a rocket overcome to be launched into space?
Thrust
Gravity
Orbital velocity
Escape velocity
- 11. Multiple Choice
The four inner planets are small and dense and have rocky surfaces.
True
False
- 12. Multiple Choice
1 astronomical unit is equal to _______.
the average distance from the Earth to the Sun
the average distance from the Earth to the moon
the average distance from the moon to the Sun
the average distance from Pluto to the Sun
- 13. Multiple Choice
If the orbital period is known for a planet, its distance from the Sun can be found.
True
False
- 14. Multiple Choice
The planets' orbits are elliptical.
True
False, circular
False, spherical
- 15. Multiple Choice
How did Johannes Kepler determine a planet's distance from the Sun?
By using a planet's orbital period
By using a Earth's orbital period
By using a planet's moons
- 16. Multiple Choice
A planet needs to orbit a star, be big enough that its own gravity shapes it as a sphere, be small enough that it isn’t a star itself, and have cleared its orbit of smaller objects.
True
False
- 17. Multiple Choice
A dwarf planet needs to orbit a star, have enough mass to be a sphere, not have cleared its orbit of smaller objects, and not be a moon.
True
False
- 18. Multiple Choice
Pluto is considered a dwarf planet because _______.
it fails to clear other bodies out of its orbit
it is too far away from the Sun
it has too many moons
- 19. Multiple Choice
Thus famous was first to discover the principal of gravity..
Galileo Galilei
Sir Isaac Newton
Erwin Schrodinger
Albert Einstein
- 20. Multiple Choice
If you're standing on the top of a mountain and drop a rock, it will fall to the ground, even though the rock is gravitationally attracted to you. Why?
Earth is larger and has a stronger gravitational pull
Rocks always fall down
Centrifugal forces pull the rock to the Earth and that is stronger than your gravitational pull
None of these
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