Which of the following situations describes a transformation of kinetic energy to potential energy?

a roller coaster goes up an incline

a light bulb is lit by a battery

a marshmallow is toasted in a camp fire

Which of the following sequences correctly displays the energy transformation from the inside of a battery to the igniter inside a car's engine?

Chemical Energy--> Electrical Energy --> Heat Energy

Heat Energy --> Electrical Energy--> Chemical Energy

Electrical Energy--> Chemical Energy --> Heat Energy

Chemical Energy --> Mechanical Energy --> Heat Energy

Modern society depends heavily on gasoline powered engines, such as the one shown in the diagram below. According to the diagram, how does the amount of useful energy output compare with the amount of energy that was initially added to the system?

The useful energy output is less than 15% of the amount of energy that was initially added to the system.

The useful energy output is 50% of the amount of energy that was initially added to the system.

The useful energy output is 12.6% greater than the amount of energy that was initially added to the system.

The useful energy output is the same as the amount of energy that was initially added to the system.

According to this diagram, is energy conserved?

Yes; even though a lot of energy is converted into non-mechanical forms, all of the energy is accounted for.

No; chemical energy cannot be converted into mechanical energy.

Yes; all of the chemical energy in the gasoline is converted into the mechanical energy of the vehicle.

No; much of the energy is lost or destroyed, and only 12.6% is conserved.

Two equal mass marbles are at the top of a ramp. One marble falls to the ground off the back while the other rolls down the ramp. What is true about the marbles when they reach the ground?

The two marbles are moving with the same speed.

The marble that rolled down the ramp is moving faster than the marble that fell.

The marble that fell down the back of the ramp is moving faster than the marble that rolled.

The marble that rolled down the ramp is not moving when it reaches the ground.

A block starts at rest at point P at the top of a ramp which is height h above the ground. The block slides down one side and up the other, stopping at a point less than h above the ground.

The block did not go as high on the other side because work from friction made the mechanical energy less.

The block did not go as high on the other side because gravity pulls down.

The block did not go as high on the other side because potential energy always has to decrease.

The situation as described is impossible to happen.

Where is the roller coaster gaining potential energy?

The roller coaster is always losing potential energy

What effect do external forces like an applied force, friction force, or drag force have?

They convert between mechanical energy and other forms of energy to change the total mechanical energy of the system.

They have no effect on a system's mechanical energy.

They convert kinetic energy into potential energy.

They convert potential energy into kinetic energy.

How does conservation of energy explain why something that is falling should speed up?

It gains kinetic energy because it loses potential energy.

It gains kinetic energy because it gains potential energy.

It loses kinetic energy because no work was done on it.

It loses kinetic energy because the Earth gains potential energy.

Which of the following is not an example of work?

an ice hockey puck laying on an ice rink

ship movement that causes ripples in the water

a man pushing a heavy box across the floor

a magnet repelling a compass needle

Which of the following is a true statement regarding springs?

The higher the value of the spring constant, the stiffer the spring.

In Hooke's law, the force exerted by the spring acts in the same direction as displacement.

Springs are designed to provide unpredictable variations in force.

The force exerted by a spring has a quadratic relationship with the displacement form equilibrium.

Which of the following springs is the stiffest?

A spring that requires a force of 4000 N to stretch it by 9.0 m.

A spring that requires a froce of 2000 N to compress it by 6.8 m.

A spring that requires a force of 8000 N to compress it by 45 m.

A spring that requires a force of 4800 N to stretch it by 14 m.

Unit 5 - Energy

Quiz

•

Physics

•

9th Grade

•

Practice Problem

•

Medium

•

NGSS

HS-PS3-2, HS-PS3-1, HS-PS3-3

+10

Standards-aligned

Used 19+ times

FREE Resource

40 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Stored energy is called

Kinetic energy

Potential energy

Thermal energy

Chemical energy

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Energy in motion is called

Kinetic energy

Potential energy

Thermal energy

Chemical energy

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-4

NGSS.MS-PS3-5

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Calculate the potential energy of a 5kg object sitting on a 1.5m ledge. (PE = Mass x Gravity x Height) Gravity = 9.8m/s2

7.5J

1.6J

74J

147J

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

An 8kg cat is running 2m/s. how much kinetic energy does it have? (KE = 0.5 x mass x velocity2)

16J

32J

64J

8J

Tags

NGSS.HS-PS3-1

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which one has more gravitational potential energy?

An airplane in the air traveling at 300 mph

An airplane at rest on the ground

A car driving 60 mph on the ground

A car at the top of a hill.

Tags

NGSS.MS-PS2-4

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Work is a

force x distance

force / distance

mass x distance

mass / distance

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The energy stored in gasoline is

chemical energy

electromagnetic energy

mechanical energy

nuclear energy

Tags

NGSS.HS-PS1-2

NGSS.HS-PS1-4

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