8th Unit 1 Change Over Time - Review
Authored by Tim Bair
Science
6th - 8th Grade
NGSS covered
Used 72+ times
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25 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Force can change the speed or direction of motion of an object, or sometimes both. The illustration below shows a game of tug-of-war between two teams of students.
What does the picture show?
an unbalanced forces
a balanced force
an electrical force
a gravitational force
Tags
NGSS.MS-PS2-2
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The forces acting on an object can either be balanced or unbalanced. If an unbalanced force is applied to an object, what might happen to the object?
both the speed and direction of an object might change
only the direction of the object might change
neither the speed or direction of the object might change
only the speed of the object might change
Tags
NGSS.MS-PS2-2
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
During the car ride home from school, Peter explained to his father what he learned about motion in class that day. He predicted to his father that they would experience negative acceleration before they arrived home. When did Peter and his father experience negative acceleration?
Group of answer choices
when they approached a stop sign
when they filled the car up with gas
when they passed another car
when they drove out of the school parking lot onto a road
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which letters on the graph indicate time periods when the object was changing speed?
A and C
B and C
A and B
B and D
Tags
NGSS.MS-PS3-1
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A car is often acted on by unbalanced forces. Which of the following situations is an example of an unbalanced force acting on a car?
when it makes a right turn
when it is parked
when it travels at 60 mph
when it is stopped at a red light
Tags
NGSS.MS-PS2-2
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Melinda is preparing to perform an experiment to test how an unbalanced force affects an object. She plans to use a hair dryer to blow air on a ping pong ball. What two variables should she measure in this experiment?
speed and direction
force and mass
direction and time
mass and speed
Tags
NGSS.MS-PS2-2
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Two students, Priscilla and Devin, are pulling as hard as they can against one another at either end of the rope. Their friend Rod walks by and says they are pulling equally hard. How does he know?
Priscilla is sliding at a constant rate.
The rope is making waves.
Devin is getting rope burn.
Priscilla and Devin are not moving.
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