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Science Ch 15
Test Description: Science review
Instructions: Answer all questions to get your test result.
1) A magnet created by using an electric current is called
A
electromagnet
B
lodestones
C
poles
D
gold
2) A________________is a simple machine that consists of two inclined planes back to back.
A
screw
B
wedge
C
wheel and axle
D
pulley
3) A___________is a lever coiled around a cylinder
A
screw
B
wheel and axle
C
wedge
D
pulley
4) Newton's first law of motion states that an object at rest will remain unless__________acts on it.
A
velocity
B
a force
C
inertia
D
time
5) To calculate distance, ___________the average speed by the time it took the object to travel that distance.
A
multiply
B
add
C
subtract
D
divide
6) ________magnets have a north and south pole.
A
All
B
A few
C
Two
D
Some
7) To calculate the ____________of an object, divide the distance the object travels by the amount of time it takes to travel that distance.
A
Work
B
Acceleration
C
Speed
D
Velocity
8) ____________is a measure of an object's speed and its direction.
A
Acceleration
B
Speed
C
Velocity
D
Work
9) ____________is done when a force moves an object over a distance.
A
Speed
B
Work
C
Velocity
D
Acceleration
10) The amount of force needed to accelerate a mas of 1 kg by a speed of 1 mps per second is ___________________
A
friction
B
speed
C
work
D
Newton
*select an answer for all questions
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