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- 1. Multiple Choice
What is gravity?
a star and all the objects that revolve around it
a picture or shape created by a group of stars
a force that pulls objects toward its center
a force that makes objects drift apart
- 2. Multiple Choice
10. Our ___________________ is made up of the planets and their moons all in orbit around the Sun.
a. galaxy
b. milky way
c. solar system
d. universe
- 3. Multiple Choice
When you increase the size of the Earth and the Sun what happens to the gravity?
the gravity of both Earth & Sun increases
the gravity of the Earth & Sun decreases
no one is sure because you cannot increase the size of the Earth & Sun
all of the above
- 4. Multiple Choice
What happens to the gravity when you move the Sun & the Earth far away from each other?
nothing happens everything stays exactly the same
the gravity of the Earth and the Sun increases
no one knows because it is impossible to move these objects
the gravity of the Earth and the sun decrease
- 5. Multiple Choice
What two factors affects gravitational force?
nothing affects gravity
size and shape
size and distance
shape and distance
- 6. Multiple Choice
Which planets in our solar system have the most gravity and why?
the terrestrial planets because they are smaller
the terrestrial planets because they are larger
the jovian planets because they are larger
the jovian planets because they are smaller
- 7. Multiple Choice
Objects (or planets) with MORE mass have __________ gravitational pull.
MORE
LESS
EQUAL
- 8. Multiple Choice
Objects (or planets) with LESS mass have __________ gravitational pull.
MORE
LESS
EQUAL
- 9. Multiple ChoiceA force of attraction between any two objects is called _____________.static electricityrotationgravityorbit
- 10. Multiple Choice
What happened first in the formation of the planets?
The Sun Forms
The Planetesimals form
The Planets form
The Solar Nebula Collapses
- 11. Multiple Choice
What is an orbit?
The quickest way to get from one place to another.
How fast an object orbits around the sun.
The path an object takes as it moves around another object, such as the Earth around the Sun.
- 12. Multiple Choice
What is mass?
How much something weights.
The amount of stuff (matter) an object has.
How big something is.
- 13. Multiple Choice
Gravity depends on which two factors?
weight and mass
mass and distance
weight and distance
- 14. Multiple Choice
An object that has a lot of mass will have
A little bit of gravity
A lot of gravity
No gravity whatsoever
- 15. Multiple Choice
The inward force required to keep a particle or an object moving in a circular pattern is know as ______.
Perihelion
Aphelion
Planetesimal
centripetal force
- 16. Multiple Choice
______ is a rotating cloud of gas and dust from which planets form.
Solar nebula
Geocentric
Heliocentric
Gravity
- 17. Multiple Choice
moving or tending to move toward a center...
centripetal force
centrifugal force
Tangent
Curvature
- 18. Multiple ChoiceYou swing a bucket of water attached to a string in a circle above your head. What keeps the water in the bucket?FrictionCentripetal ForceGravityInertia
- 19. Multiple Choice
What happened first in the formation of the planets?
The Sun Forms
The Planetesimals form
The Planets form
The Solar Nebula Collapses
- 20. Multiple Choice
--------------------------- formed when dust grains stuck together, and then eventually increased in size until they were kilometers sized objects.
planetesimals
stars
planets
asteroids
- 21. Multiple Choice
What step in the formation of the solar system is this?
Step 1
Step 2
Step 3
Step 4
- 22. Multiple Choice
What formed first?
Sun
Planets
Planetesimals
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