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6th Grade Physical Science
Test Description: Matter in Motion
Instructions: Answer all questions to get your test result.
1) Friction occurs because of
A
the roughness of any object's surface
B
only the weights of any two objects
C
only the amsses of any two objects
D
unbalanced forces
2) A hiker's velocity begins at 1.8m/s uphill and changes to 1.5 m/s uphill. How do you know that the hiker has a negative acceleration?
A
his speed decreased
B
his direction was unchanges
C
his direction changed
D
his speed increased
3) In which of the following is a skater NOT accelerating?
A
going straight while speeding up
B
going straight at constant speed
C
making circles at constant speed
D
going straight while slowing down
4) A student has a weight of 420 N on Earth. What is the student's weight on the moon. (Moon's gravity = 1/6 of Earth's gravity)
A
70 kg
B
2520 N
C
2520 kg
D
70 N
5) An unbalanced force can cause an object's motion to change by
A
changing direction or speed only
B
changing direction or speed; starting but not stopping motion
C
changing direction or speed; stopping by not starting motion
D
changing direction or speed, starting or stoping motion
6) The law of universal gravitiation says that gravitational force is
A
related to mass and distance
B
related to mass and friction
C
related to weight and friction
D
related to weight and distance
7) _______ is a push or pull that always acts on an object.
A
friction
B
gravity
C
force
D
weight
8) A change in a moving object's speed or direction is _____________.
A
speed
B
velocity
C
mass
D
accleration
9) A force that always acts to oppose motion
A
velocity
B
gravity
C
motion
D
friction
10) A measure that does not change when an object's location change
A
mass
B
velocity
C
weight
D
speed
*select an answer for all questions
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