As a pendulum swings from its highest to lowest position, what happens to its kinetic and potential energy?

The PE decreases while the KE increases

The PE and KE increase and decrease together

Impossible to know without knowing the mass

According to the Law of Conservation of energy, the amount of energy before and after a reaction must be the same. Which statement below is true?

The total amount of energy is conserved

The total amount of energy is less after a reaction

The total amount of energy is more after a reaction

How does the mass of a bowling ball that has been rolled down the lane affect the kinetic energy?

The kinetic energy is increasing proportional to the mass of the bowling ball.

The kinetic energy does not depend on the mass of the bowling ball.

The kinetic energy is decreasing proportional to the mass of the bowling ball.

The kinetic energy is increasing proportional to the square of the mass of the bowling ball.

As a roller coaster goes downhill

potential energy is converted into kinetic energy.

kinetic energy is converted into potential energy.

electrical energy is converted into potential energy.

potential energy is converted into electrical energy.

Within the alarm clock seen here, energy is transformed. It is time to get up! The alarm clock goes off. What are the energy transformations taking place in your alarm clock?

electrical to mechanical to sound

electrical to magnetic to sound

electrical to mechanical to light

chemical to electrical to mechanical

In the figure, potential energy is being converted into kinetic energy from

The only energy involved here is kinetic.

Which energy transformation below matches? Burning coal or carbon-based fuel at a powerplant?

mechanical to chemical to sound

How are different forms of energy related?

they can all be transformed into other forms of energy

none of them can be transformed into other forms of energy

Which is an example of a single energy transformation?

A toaster converts electrical to thermal energy

A match converts mechanical to thermal to electromagnetic

A biker converts chemical to mechanical to thermal

A car converts chemical to thermal to mechanical

What is an example of multiple energy transformations?

a flashlight converts chemical energy in batteries to electrical to electromagnetic energy in light

Your body transforms chemical to thermal

Your body transforms chemical to mechanical

a phone converts electrical to electromagnetic

Identify the correct energy transformation for the image below.

Chemical --> Radiant --> Thermal

Kinetic --> Potential --> Sound

Electrical --> Sound --> Thermal

Identify the correct energy transformation for the image below.

Thermal --> Potential --> Gravitational

Kinetic --> Gravitational --> Sound

What is the energy transformation that occurs in an electric pencil sharpener?

electrical energy → kinetic energy

mechanical energy → electrical energy

radiant energy → sound energy

chemical energy → kinetic energy

What energy transformations take place when a battery-operated radio is in use?

Chemical → electrical → sound

Electrical → chemical → light

Light → electrical → thermal

A student listens to music with a digital music player, similar to the one shown below. Which best describes the energy transformations that take place in the music player?

Chemical → electrical → sound

Kinetic → chemical → electrical

Chemical → sound → electrical

What type of device might this Sankey be about?

A very inefficient incandescent light bulb

A very efficient LED light bulb

Yr 9 - Conservation of Energy

Authored by Richard Badergeorgievski

Physics

9th Grade

NGSS covered

Used 64+ times

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60 questions

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

At which point(s) on the roller coaster is the gravitational potential energy at its maximum?

Tags

NGSS.MS-PS3-2

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

At which point(s) on the roller coaster is the kinetic energy at its maximum?

Tags

NGSS.MS-PS3-1

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In diagram 2, if the mass of the car is 600 kg, what is the change in potential energy from point A to point B?

411,600 J

294,000

176,400 J

117,600 J

Tags

NGSS.HS-PS3-1

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does the Law of Conservation of Energy state?

Energy cannot be created or destroyed

Nothing can exchange energy

Energy will increase over time.

Energy will decrease over time.

Tags

NGSS.MS-PS3-5

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Is energy always conserved?

Always

Often

Never

Sometimes

Tags

NGSS.MS-PS3-5

MULTIPLE CHOICE QUESTION

30 sec • 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

30 sec • 1 pt

What type of energy is in this picture?

Kinetic

Potential

Chemical

Sound

Tags

NGSS.MS-PS3-5

NGSS.MS-PS3-1

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Yr 9 - Conservation of Energy

At which point(s) on the roller coaster is the gravitational potential energy at its maximum?

At which point(s) on the roller coaster is the kinetic energy at its maximum?

In diagram 2, if the mass of the car is 600 kg, what is the change in potential energy from point A to point B?

What does the Law of Conservation of Energy state?

Is energy always conserved?

Energy of motion is which type of energy?

What type of energy is in this picture?

What force ultimately slows the roller coaster to a stop?

As a pendulum swings from its highest to lowest position, what happens to its kinetic and potential energy?

What kind(s) of energy is(are) in a person climbing a ladder?

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