Wind turbines and windmills convert what energy to another?

Gravitational potential to electric

Which statement is correct?

b) Energy is never lost it merely changes type and becomes less useful.

a) Energy is always lost as energy changes are terribly inefficient.

c) Energy is never lost as it can always be recovered.

d) Energy is usually lost in old products as they are inefficient.

Which best describes how the energy is being converted.

Chemical energy is being converted to thermal and light energy

Chemical energy is being converted to thermal energy

Chemical energy is being converted to light energy

Chemical energy is being converted into electric energy.

How does the law of conservation of energy applied to this image.

Potential energy is changing to kinetic energy and vice versa.

Potential Energy is changing to Mechanical Energy.

Kinetic energy is being changed to Electric Energy.

A television works by transforming electrical energy into what other kinds of energy?

Sound, mechanical, and electrical

Light, chemical, and mechanical

Which type of energy transformation occurs when a flashlight shines?

chemical → electrical → light

chemical → thermal → electrical

chemical → electrical → chemical

The Theory of the Conservation of Energy states -

Energy can never be created nor destroyed. It can only change its form from one type to another.

Energy can be created, just not destroyed. It changes its form from one type to another.

The total energy in our Universe changes, as different forms of energies can be transformed from each other under certain circumstances.

Energy transformations do not passively occur in our lives, rather we actively make use of energies and transform energies.

Energy transformations occur when...

energy changes from one form to another

energy is created through conduction

two forces slide together that are touching

a chemical reaction takes place

A teacher rubbed a match against a piece of sandpaper. The match started to burn. Which statement best describes the energy changes that occurred?

The chemical energy stored in the match changed to thermal energy and light energy.

The thermal energy stored in the match changed to light energy and chemical energy.

The light energy and thermal energy stored in the match changed to mechanical energy.

The light energy and thermal energy stored in the match changed to chemical energy.

Year 8 Physics

Physics

8th Grade

NGSS covered

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28 questions

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MULTIPLE CHOICE QUESTION

1 min • 1 pt

Energy of motion is which type of energy?

Potential

Kinetic

Sound

Gravitational

Tags

NGSS.MS-PS3-5

NGSS.MS-PS3-1

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What type of energy is in this picture?

Kinetic

Potential

Chemical

Sound

Tags

NGSS.MS-PS3-5

NGSS.MS-PS3-1

MULTIPLE CHOICE QUESTION

1 min • 1 pt

When plants convert the sun's energy into food, which type of energy is it?

kinetic

chemical

thermal

radiant

Tags

NGSS.MS-LS1-6

NGSS.MS-LS1-7

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What kind of energy is represented in this picture?

Thermal

Potential

Nuclear

Mechanical

Tags

NGSS.MS-PS3-4

NGSS.MS-PS1-4

NGSS.MS-PS3-3

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What kind of energy does this device use?

Chemical

Electrical

Thermal

Chemical

Tags

NGSS.MS-PS1-6

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What kind of energy is represented in the picture?

Thermal

Chemical

Sound

Nuclear

Tags

NGSS.MS-PS3-4

MULTIPLE CHOICE QUESTION

1 min • 1 pt

A battery converts what type of energy to another?

sound to kinetic

light to heat

mechanical to electrical

chemical to electrical

Tags

NGSS.HS-PS3-3

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Year 8 Physics

Energy of motion is which type of energy?

What type of energy is in this picture?

When plants convert the sun's energy into food, which type of energy is it?

What kind of energy is represented in this picture?

What kind of energy does this device use?

What kind of energy is represented in the picture?

A battery converts what type of energy to another?

The glow sticks produce light for a short amount of time. The light from the glow stick is a conversion from what to what?

Wind turbines and windmills convert what energy to another?

Energy stored in the height of an object is called ___________ potential energy.

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