Sci 8 Q3 W9 Review

Sci 8 Q3 W9 Review

8th Grade

10 Qs

quiz-placeholder

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Sci 8 Q3 W9 Review

Sci 8 Q3 W9 Review

Assessment

Quiz

Science

8th Grade

Medium

Created by

Elise Taylor

Used 3+ times

FREE Resource

10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

When a hammer strikes a nail, the nail

exerts balanced forces that helps it from moving.

exerts a force equal to the weight of the hammer.

exerts an unbalanced force that changes its velocity.

exerts an equal and opposite force back on the hammer.

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

Angela blows air into a balloon and holds the end of it closed with her fingers. When she lets go of the end of the balloon, Angela observes that the release of the air propels the balloon. The propelling of the balloon from the release of the air is an example of which of Newton’s laws?

For every action, there is an equal and opposite reaction.

A force of attraction exists between any two objects with mass.

The force of an object is the product of its mass multiplied by its acceleration.

An object in motion tends to stay in motion unless an unbalanced force acts upon it.

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

Roland dropped a rubber ball straight down. After falling for 2 seconds, the ball struck the ground with a force of 50 newtons (N). Which vector illustrates the reaction force of the ground exerted on the ball?

25 N downward

50 N downward

100 N upward

50 N upward

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

When the two forces are applied to the moving bus, the bus will

come to a complete stop because of unbalanced forces.

accelerate because of unbalanced forces.

slow down because the forces are balanced.

move at a constant speed because the forces are balanced.

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

If the ball is at rest on the soccer field and the four forces shown are applied at the same time, the ball will

move to the left.

stay in the same position.

resist any change in movement.

accelerate in the direction of the smallest force.

6.

MULTIPLE SELECT QUESTION

30 sec • 1 pt

Media Image

Two forces act on a block as shown in the picture. What is the net force on the block?

10 N to the left

10 N to the right

30 N to the right

30 N to the left

7.

MULTIPLE SELECT QUESTION

30 sec • 1 pt

Media Image

The diagram shows two fans blowing air on a ball. What is the net force acting on the ball?

5 N to the left

5 N to the right

19 N to the right

19 N to the left

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