Unit 5 Motion Review
Authored by ALISON ARMSTRONG
Science
8th Grade
NGSS covered
Used 11+ times
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25 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
According to Newton's third law of motion, when an astronaut pushes against another astronaut and exerts a force on them, the other astronaut --
doesn't do anything
moves at a constant speed
moves at right angles to the first astronaut
exerts and equal force back on the first astronaut
Tags
NGSS.MS-PS2-1
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why are scissors considered a compound machine?
They are made of two or more simple machines.
They make work easier.
They have few to no moving parts
They can be used for many different tasks.
Tags
NGSS.MS-PS2-1
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Fill in the blank: Comparing output work to input work gives us _________________________ expressed as a percentage.
force
efficiency
work
power
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Force is calculated by multiplying which two factors together?
mass and speed
mass and acceleration
speed and acceleration
work and power
Tags
NGSS.MS-PS2-2
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The pull of gravity on a object is called its --
mass
density
volume
weight
Tags
NGSS.MS-PS2-4
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of these uses the force of gravity to make it move?
snow sliding down your jacket from a thrown snowball
throwing the snowball
wind blowing snow off the tree
making a snowman
Tags
NGSS.5-PS2-1
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If Sally buys a lower-mass car such as a Prius, what will happen to the car's ability to accelerate?
It will increase.
It will decrease.
It will stay the same.
There is no relationship between mass and acceleration.
Tags
NGSS.MS-PS2-2
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