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Gravity And Inertia
Test Description: Gravity and Inertia
Instructions: Answer all questions to get your test result.
1) What is gravity?
A
a type of space rock
B
a blue force that pulls objects toward each other
C
a force that repels objects
D
an invisible force that pulls objects toward each other
2) Name two ways that gravity can be affected.
A
by force and motion
B
by mass and distance
C
by motion and gravity
D
by distance and the moon
3) When two forces are the same strength but act in opposite direction, they are called _____________.
A
unbalanced strength
B
balanced gravity
C
law of inertia
D
balanced forces
4) Newton's first law states that if a body is at rest, it will remain at rest unless ___________________.
A
it starts to move again
B
it is acted upon by a force.
C
it stops
D
it is moving very fast
5) Newton's second law states that the greater the _______ of an object, the more force it will take to increase the speed of the object.
A
speed
B
gravity
C
inertia
D
mass
6) The law of universal ________ states that two bodies in space pull on each other with a force proportional to their masses and the distance between them.
A
forces
B
acceleration
C
gravitation
D
motion
7) Newton's third law states that for every action there is an __________ and _________ reaction.
A
equal and opposite
B
inertia and gravity
C
unequal and same
D
action and force
8) If you kick a soccer ball, it will fly forever unless some force stops it. Which of Newton's laws is this?
A
law of universal gravitation
B
second law
C
third law
D
first law (law of inertia)
9) When you push an object with more force as in hitting baseball ball with a lot of power, it will move faster and farther away. This is which of Newton's laws?
A
first
B
fourth
C
third
D
second
10) Which of the following is an example of Newton's third law (for every action in nature there is an equal and opposite reaction)?
A
Standing on the ground or sitting on a chair
B
all of the above
C
Pulling an elastic band
D
rowing a boat
*select an answer for all questions
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