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- 1. Multiple Choice
Gravity attracts objects towards one another
True
False
- 2. Multiple Choice
Where is the sun located in the galaxy?
at the edge
within an outer arm
at the center
within the center body
- 3. Multiple Choice
Gravity is based on an object's _____________.
roundness
brightness
appearance
mass
- 4. Multiple Choice
What evidence supports the sun's location in the galaxy?
observation of globular clusters
measurement of brightness in the galaxy
composition of the stars in the galaxy
elliptical orbits of planets around the sun
- 5. Multiple Choice
What keeps the planets in orbit around the sun?
stars
heat
gravity
satellites
- 6. Multiple Choice
What galaxy are Earth and the solar system located?
Andromeda galaxy
Whirlpool galaxy
Inner Planet galaxy
Milky Way galaxy
- 7. Multiple Choice
Why do the planets in our solar system orbit the sun?
because the sun is the brightest
because the sun was there first
because the sun has the most mass
because nothing can orbit planets
- 8. Multiple Choice
What is true about the dark areas of the night sky?
Black holes make up the dark areas of the sky
Objects in the dark areas of the sky are too far to be seen
There is nothing located in the dark areas of the sky
Objects in the dark areas are moving too fast to be seen
- 9. Multiple Choice
This is the word that describes space and all the matter and energy in it.
universe
space
solar system
sun
- 10. Multiple Choice
Which of the following is the largest?
cluster
solar system
star
galaxy
- 11. Multiple Choice
Gravity is the force objects put on each other because of their ____________.
speed
mass
direction
location
- 12. Multiple Choice
Why is the Earth and other planets spherical?
erosion from asteroids hitting the surface
heat from the sun melted the object's surface
force of gravity is acting evenly in all directions around the center mass
pressure of the atmosphere acting evenly in all directions
- 13. Multiple Choice
What would happen if the mass of one object suddenly increased?
The mass of the other object would increase
The distance between the objects would increase
The gravitational force of the objects would remain constant
The gravitational force between 2 objects would increase
- 14. Multiple Choice
What force keeps the planets held in their orbit?
gravitational force
nuclear force
electrical force
magnetic force
- 15. Multiple Choice
If 2 planets of the same mass are in space and A is closer to the sun while B is farther away from the sun, which one will have a stronger gravitational field/force?
planet A
planet B
- 16. Multiple Choice
What might happen to a satellite if Earth's gravity suddenly disappeared?
The satellite would stop moving
The satellite would fall to Earth
The satellite would move into space in a straight line
The satellite would continue to orbit Earth
- 17. Multiple Choice
Which of the following choices are true about orbits?
All objects in space move in perfect, circular orbits
The size of an object determines the size of its orbit
The size of both the object and the object it orbits are equal
The force of gravity is what holds each object in its orbit
- 18. Multiple Choice
Which evidence describes how we know where Earth is located in the Milky way galaxy?
Globular clusters seen from telescopes tell us that our solar system is not near the center of the Milky way, but rather we are located in the outer arm
Our solar system is located in the center mass of the Milky way galaxy
Our solar system is located on the inner arm of the galaxy
Our solar system is not in the Milky Way galaxy
- 19. Multiple Choice
Which option shows objects in the correct order from smallest to largest.
universe, galaxy, solar system, planet
solar system, universe, galaxy, planet
planet, solar system, galaxy, universe
galaxy, planet, universe, solar system
- 20. Multiple Choice
True or False: Galaxies are moving toward one another and may collide in the future.
True
False
- 21. Multiple Choice
What object is much smaller than our sun, but has more than 4 times the mass of the sun and is so powerful that even light can't escape?
elliptical
asteroid
Andromeda
black hole
- 22. Multiple Choice
Finish this sentence correctly. A spiral galaxy is best described as a very large group of stars....
arranged in arms encircling a dense center
packed into a dense, spherical center
arranged into the shape of an elliptical disc
- 23. Multiple Choice
Choose the best definition for universe.
an extremely large group of stars in space
consists of the sun, 8 planets, and their moons
all space and the matter that space contains
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