Moving water in a river is considered a renewable resource because it

can be recycled by nature over time

Three best friends each play different sports and were curious about the relationship of mass to the kinetic energy of each of the balls they use to play. They calculated the kinetic energy of each ball using the approximate mass and a common velocity of 10m/s to compare them. The table below contains their data. Ball Type: Tennis Ball (60g, 3J), Baseball (150g, 7.5J), Soccer Ball (400g, 20J) Based on the data in the table, what can be concluded about the relationship between mass and kinetic energy?

The relationship between mass and kinetic energy is positive and proportional since the mass is 20 times the kinetic energy for each object.

The relationship between mass and kinetic energy is not proportional since the mass increases by different amounts for each object.

The relationship between mass and kinetic is negative and proportional since the kinetic energy is 1/20 of the mass for each object.

There is no relationship between mass and kinetic energy because the mass and kinetic energy change by different amounts for each object.

Fossil fuels are considered nonrenewable because they

often contain microscopic animals

Identify one activity in the diagram that requires the use of fossil fuels.

Fuel oil truck delivering oil or gas grill being used.

Solar panels generating electricity.

Wind turbine spinning to produce energy.

Rainwater being collected in a barrel.

An energy transformation occurs when one form of energy is changed to another. Fill in the spaces below to describe an energy transformation that occurs as the children play baseball. __________________________ is changed to ____________________________

Chemical energy is changed to kinetic energy.

Light energy is changed to sound energy.

Electrical energy is changed to thermal energy.

Gravitational energy is changed to nuclear energy.

The potential energy of student A can be increased by:

moving student A to a higher position

lowering student A to the ground

removing all objects near student A

The diagram shows the steps necessary to produce the energy needed to run a hair dryer. As it moves from location A to location D in the diagram, the energy stored in the coal

reduces the friction in the hair dryer

The illustration shows an example of energy changing forms. Which changes in energy form are illustrated in the diagram?

light → electrical → mechanical and sound

electrical → sound → light and mechanical

sound → mechanical → light and electrical

mechanical → light → sound and electrical

Energy Exam Review

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7th Grade

NGSS covered

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which energy transformation occurs when classroom lights are switched on?

Electrical energy is transformed into light energy.

Light energy is transformed into electrical energy.

Heat energy is transformed into sound energy.

Sound energy is transformed into heat energy.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

When gasoline is put into a car, it changes from chemical energy to mechanical energy. In this process, some energy is

created

destroyed

changed to matter

changed to heat

Tags

NGSS.MS-PS3-5

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which statement best describes the energy changes that occur while a child is riding on a sled down a steep, snow-covered hill?

Kinetic energy decreases and potential energy increases.

Kinetic energy increases and potential energy decreases.

Both potential energy and kinetic energy decrease.

Both potential energy and kinetic energy increase.

Tags

NGSS.MS-PS3-5

NGSS.MS-PS3-4

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In the diagram below, at which position will the ball have the greatest kinetic energy?

Tags

NGSS.MS-PS3-5

NGSS.MS-PS3-1

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Energy from the Sun reaches Earth mainly by the process of

conduction

convection

reflection

radiation

Tags

NGSS.MS-ESS2-6

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How is heat energy transferred within the liquid water in the pond?

compound formation

chemical reactions

convection currents

nuclear reactions

Tags

NGSS.MS-PS3-4

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Compared to the particles in liquid water, the particles in solid ice move

faster and resist changes in position

faster and easily change position

slower and resist changes in position

slower and easily change position

Tags

NGSS.MS-PS1-4

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Energy Exam Review

Which energy transformation occurs when classroom lights are switched on?

When gasoline is put into a car, it changes from chemical energy to mechanical energy. In this process, some energy is

Which statement best describes the energy changes that occur while a child is riding on a sled down a steep, snow-covered hill?

In the diagram below, at which position will the ball have the greatest kinetic energy?

Energy from the Sun reaches Earth mainly by the process of

How is heat energy transferred within the liquid water in the pond?

Compared to the particles in liquid water, the particles in solid ice move

The diagram below represents the path of a ball after it has been thrown. Letters A, B, C, and D represent different locations in the path that the ball traveled. At which location did the ball have the greatest potential energy?

Moving water in a river is considered a renewable resource because it

Which type of potential energy does a spring contain?

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