Gravity review questions

1. Graphing Gravity
Draw a graph that shows what happens to the weight of an
object that is getting farther from Earth.
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2. Graphing Gravity
Draw a graph that shows what happens to the mass of an
object that is getting closer to Earth
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3. Complete the sentence below:
___________ is determined by ___________
which is caused by an object’s ___________.
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4. 1. A student has a mass of 45kg. How much
does the student weigh on Earth? (F=ma)
2. How much force is this student exerting on
the Earth?
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5. 1. A student has a mass of 45kg. How much
does the student weigh on the moon?
(Moon’s accel due to gravity = 1.6 m/s2)
2. How much force is this student exerting on
the moon?
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6. 6
Name
Gravity Review Questions
Answer Explanation (what concept applies?)
1.
2.
3.

7. • Mass and Weight
– Which statement best describes your weight and
mass on the Moon as compared to here on Earth?
a) Your weight would be less but your mass
would be more.
b) Your weight would be more but your mass
would be less.
c) Your weight would be less but your mass
would be the same.
d) Your weight would be the same but your
mass would be less.
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8. • Gravitational Force
– Astronauts in space appear weightless because
a) There is no gravity in space
b) They have no mass in space
c) There is no air resistance in space
d) They are in free fall
e) Both A and C
f) None of the above
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9. • Weight v. Time
– The diagram shows a graph of an object’s weight
as it moves through outer space. What is
happening to the object?
a) Its size is slowly increasing.
b) Its mass is slowly increasing.
c) It is approaching a more massive object in
space.
d) The electromagnetism acting on it is
increasing. Weight
Time
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10. • Gravitational Attraction
A spacecraft on its way from Earth to the moon is
pulled equally by Earth and the moon when it is
a) Closer to Earth’s surface
b) Closer to the moon’s surface
c) Half way from the Earth to the moon
d) At no point, since Earth always pulls more
strongly
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11. • Inferring Mass
• Sophie is a space traveler.
She visits six planets and
weighs herself on each
planet. Use the data to
put the planets in order
from MOST massive to
LEAST massive.
Planets Sophie’s
Weight
A 32.7N
B 11.4N
C 113.6N
D 81.8N
E 16.8N
F 181.8N

12. • Force and Distance
– Assuming that the objects are equal distance
apart, between which pair of objects would
gravitational force be greatest? The least?
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a)
c)
b) 50kg
50kg 50kg
100kg 100kg
100kg

13. • Free Fall v. Terminal Velocity
– Identify which object is in free fall and which
has reached terminal velocity
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Fair = 50 N
Fgrav = 50 N Fgrav = 50 N

14. • Gravitational Attraction
– The moon is most responsible for Earth’s tides.
Which pulls more strongly on the Earth and its
oceans?
a) Moon
b) Sun
c) Both about equally
d) Neither A nor B
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