Quiz
Gravity
4 years ago by
craniumfire
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20 questions
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• Question 1
30 seconds
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Q. Most of the Universe is _____
filled with planets
filled with stars
filled with gas and dust
pretty empty
• Question 2
30 seconds
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Q. Gravity from an object _____
stops at it's surface
stops after about 10,000 km
stops at the edge of the solar system
goes on forever
• Question 3
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Q. Isaac Newton got into a bitter feud with _____
Tycho Brahe
Robert Hooke
Galileo Galilei
Johannes Kepler
• Question 4
30 seconds
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Q. You can think of it as "how much stuff makes up an object"
size
brightness
mass
density
• Question 5
30 seconds
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Q. Which term is defined as "how much mass is inside a given volume"?
size
brightness
weight
density
• Question 6
30 seconds
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Q. When the distance from an object is doubled, the force of gravity drops by a factor of _____
2
4
10
16
• Question 7
30 seconds
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Q. Go 3 times farther away and the force of gravity drops by _____
3 times
6 times
9 times
12 times
• Question 8
30 seconds
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Q. If there are no other forces acting on them, two objects with mass will _____
repel
stay where they are
move uniformly toward each other
accelerate toward each other
• Question 9
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Q. What can be described as "falling and missing the ground"?
accelerating
free-falling
orbiting
attaining escape velocity
• Question 10
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Q. A rock thrown hard enough sideways will orbit the Earth once every _____
9 minutes
90 minutes
9 hours
90 hours
• Question 11
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Q. Who realized that planetary orbits aren't necessarily circular?
Isaac Newton
Galileo Galilei
Johannes Kepler
Robert Hooke
• Question 12
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Q. The planets of our solar system have orbits that are _____
circular
ellipses
parabolas
hyperbolas
• Question 13
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Q. In order to break free of a planet's gravity, an object must be moving faster than the _____
escape velocity
getaway acceleration
break-away pace
liberation altitude
• Question 14
30 seconds
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Q. What is the escape velocity of the Earth?
about 11 kilometers per second
about 110 kilometers per second
about 11 kilometers per hour
about 110 kilometers per hour
• Question 15
30 seconds
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Q. For an object that misses the Earth but still passes us at escape velocity, the orbit is _____
a circle
an ellipse
a parabola
a hyperbola
• Question 16
30 seconds
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Q. At the height of the space station, gravity, compared to that at Earth's surface, is _____
about 0.9% as strong
about 9% as strong
about 49% as strong
about 90% as strong
• Question 17
30 seconds
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Q. What does NASA like to call the free-fall condition while on the space station?
microgravity
microweight
microdensity
micromass
• Question 18
30 seconds
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Q. In space you have the same mass as you do on Earth, but no _____
microgravity
weight
density
pressure
• Question 19
30 seconds
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Q. Which particle has no mass, yet can be affected by gravity?
proton
electron
neutron
photon
• Question 20
30 seconds
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Q. An object moving along a path controlled by gravity is said to be _____