A satellite orbiting above the earth (shown below) needs no power source to keep orbiting the earth. The best explanation for this involves the law of inertia. Simply put the law of inertia states -

A body in motion will continue in motion unless acted upon by an outside force

For every force on an object that object exerts an equal and opposite force back

The net force equals the mass times the acceleration of an object

Energy cannot be created or destroyed, only changing forms

A motor boat is traveling 10 m/s on a sunny calm day. The driver turns off the engine . Apply Newton’s first law to explain what happens to the boat as it glides through the water.

The boat moves slower and slower

The boat will move at a constant speed

The boat moves at a constant speed for a while and then slows down

The boat slows down and then moves at a constant speed

A car travels 10 miles East in 30 minutes. What is the car's velocity in miles per hour? S= d/t

+ or - 20 miles per hour depending on direction

During science class, Ben and Dylan had to set up a demonstration to model one of Newton's laws. When Ben hit the index card with his finger, the penny fell into the cup (it was at rest). What does the students' demonstration illustrate?

An object at rest stays at rest and an object in motion stays in motion at the same speed and in the same direction unless acted upon by an unbalanced force. 1st Law of Motion

A force causes a change in velocity and likewise a change in velocity generates a force. 2nd Law of Motion

An object subjected to an external force will accelerate and that the amount of the acceleration is proportional to the size of the force. 2nd Law of Motion

For every action in nature there is an equal and opposite reaction. In other words if object A exerts a force on object B, then object B also exerts an equal force on object A. 3rd Law of Motion

Why would Farmer Bob decide to use a compound pulley to raise a box up to the top of his barn?

Reduce the amount of force needed to lift the box

Reduce the distance the box has to travel

Reduce the amount of power needed to lift the box

Sara and Sam went for a two-hour drive. According to the graph, between .75 hours and 1.25 hours into their trip, they -

Were not moving since there was no change in position

Slowed down to a speed of 15km/hr

Travelled at a constant rate of 30 km/hr

Turned around to go home but their speed remained constant

In which situation is there no work being done ?

A 10 N force applied to a stationary wall

A 25 N force applied over 6 meters

A mouse pushing a crumb across the floor

Calculate the net force and direction the object will move.

The Net Force is 60 N and the box will move to the right.

The Net Force is 100 N and the box will move to the right.

The Net Force is 80 N and the box will move to the right.

The Net Force is 60 N and the box will move to the left.

Unit 3 Review

Quiz

•

Science

•

8th Grade

•

Practice Problem

•

Medium

•

NGSS

MS-PS2-2, MS-PS3-1, MS-PS2-1

+6

Standards-aligned

ELIZABETH GOODWYN

Used 73+ times

FREE Resource

32 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

As a roller coaster goes downhill

Kinetic energy is converted to potential energy

Potential energy is converted to kinetic energy

Electrical energy to potential energy

Potential energy to electrical energy

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Energy is the ability to do

Nothing

Power

Work

Energy

3.

MULTIPLE SELECT QUESTION

30 sec • 1 pt

Select ALL the statements that best reflect what is occurring as the rock moves up the hill

Potential energy is decreasing

Kinetic energy is increasing

Kinetic energy is decreasing

Potential energy is increasing

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-2

NGSS.MS-PS3-4

NGSS.MS-PS3-5

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

You get to ride a thriller water slide (as depicted below). Each letter represents a location along the ride. Between which two points would you predict the smallest change in energy?

A to B

B to C

B to D

D to E

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-4

NGSS.MS-PS3-5

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following represents the position in which the roller coaster has the maximum potential energy?

A

B

C

D

Tags

NGSS.MS-PS3-2

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which point on the pendulum's swing represents the minimum potential energy?

A

B

C

D

Tags

NGSS.MS-PS3-2

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A group of students is exploring how different variables affect the kinetic energy of a cart. They set up four different experiments. One end of the ramp rests on 1 to 3 blocks and the cart carries a load of one to three 20g marbles. For each test, they release the cart at the top of the ramp and measure its speed at the bottom of the ramp.
Which experiment(s) best explores the relationship between mass and kinetic energy? (remember you can only change 1 thing) Look at the marbles

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-1

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Unit 3 Review

32 questions

As a roller coaster goes downhill

Energy is the ability to do

Select ALL the statements that best reflect what is occurring as the rock moves up the hill

You get to ride a thriller water slide (as depicted below). Each letter represents a location along the ride. Between which two points would you predict the smallest change in energy?

Which of the following represents the position in which the roller coaster has the maximum potential energy?

Which point on the pendulum's swing represents the minimum potential energy?

The data table below shows the speed of each car recorded at each second. Based on the data, which car(s) traveled at a constant speed? Select more than one

A roller coaster is traveling 1 m/s at the top of the track. At the bottom of the track, 3 seconds later, it is traveling 36 m/s. What is the average acceleration?

Alexis walked 1.5 km to her house in 0.5 hours. What is Alexis' speed?

Create a free account and access millions of resources

Similar Resources on Wayground

Popular Resources on Wayground

Discover more resources for Science

Unit 3 Review

32 questions

As a roller coaster goes downhill

Energy is the ability to do

Select ALL the statements that best reflect what is occurring as the rock moves up the hill

You get to ride a thriller water slide (as depicted below). Each letter represents a location along the ride. Between which two points would you predict the smallest change in energy?

Which of the following represents the position in which the roller coaster has the maximum potential energy?

Which point on the pendulum's swing represents the minimum potential energy?

The data table below shows the speed of each car recorded at each second. Based on the data, which car(s) traveled at a constant speed? **Select more than one**

A roller coaster is traveling 1 m/s at the top of the track. At the bottom of the track, 3 seconds later, it is traveling 36 m/s. What is the average acceleration?

Alexis walked 1.5 km to her house in 0.5 hours. What is Alexis' speed?

Create a free account and access millions of resources

Similar Resources on Wayground

Popular Resources on Wayground

Discover more resources for Science

The data table below shows the speed of each car recorded at each second. Based on the data, which car(s) traveled at a constant speed? Select more than one