Energy Transformations AKS 9A Lesson

Presentation

•

Science

•

8th Grade

•

Hard

•

NGSS

MS-ESS1-1, MS-PS3-5, MS-PS2-4

+22

Standards-aligned

Marissa Brown

FREE Resource

19 Slides • 24 Questions

AKS 7a - Energy Transformations

Multiple Choice

According to the Law of Conservation of Energy, energy cannot be _________ or ____________.

destroyed, destroyed

created, saved

created, destroyed

lost, found

Multiple Choice

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.

Multiple Choice

When a lion eats a zebra and then uses the energy from the zebra to run, the lion’s body converts —

chemical energy to mechanical energy

electrical energy to chemical energy

chemical energy to light energy

mechanical energy to chemical energy

Multiple Choice

The diagram below shows a hot air balloon rising. Propane gas tanks are seen at the bottom of the balloon. What energy transformations occur when propane gas is used to lift the balloon?

Mechanical to light to chemical

Chemical to mechanical to thermal

Thermal to chemical to light

Chemical to thermal to mechanical

Multiple Choice

The blades of a toy helicopter spin when its circuit is connected to a battery. Which sequence below correctly identifies the energy changes taking place in the helicopter?

chemical to electrical to potential

chemical to electrical to mechanical

Multiple Choice

1. A student investigated the energy transformations that occur when a call is placed from cell phone A and received by cell phone B. The student drew a diagram to show the process. Based on the diagram, what evidence is there for the transformation of chemical energy into electrical energy, and which other energy transformations must occur for the call to be received by cell phone B?

Evidence:

Cell phones are powered by a battery that produces the electricity used to send or receive a call.

Transformation 1: Sound energy is transformed into

electrical energy by cell phone A.

Transformation 2: Electrical energy is transformed into mechanical energy in the cell towers and base station

Evidence:

Cell phones are powered by a battery that produces the electricity used to send or receive a call.

Transformation 1: Sound energy is transformed into

electromagnetic waves by cell phone A.

Transformation 2: Electromagnetic waves are transformed back into sound energy by cell phone B.

Evidence:

Base stations are powered by a battery that produces the electricity used to receive and forward a call.

Transformation 1: Sound energy is transformed into electrical energy by cell phone A.

Transformation 2: Electrical energy is transformed into mechanical energy in the cell towers and base station

Evidence:

Base stations are powered by a battery that produces the electricity used to receive and forward a call.

Transformation 1: Sound energy is transformed into electromagnetic waves by cell phone A.

Transformation 2: Electromagnetic waves are transformed back into sound energy by cell phone B

Multiple Choice

a boy riding a bike has this type of ENERGY

Gravitational Potential

chemical

elastic

mechanical

Multiple Choice

a ball on the top of a building has this type of ENERGY

Electrical

Sound

Thermal

Gravitational Potential Energy

Multiple Choice

At point B, the energy is ______.

Potential

Kinetic

Thermal

Chemical

Multiple Choice

What type of energy is being used?

electromagnetic

mechanical

thermal

sound

Multiple Choice

Which 2 letters have the most kinetic energy

W & Y

X & Z

Multiple Choice

A fire is an example of what kind of ENERGY?

Nuclear

Sound

Thermal

Chamical

Multiple Choice

gasoline has this type of ENERGY

chemical

nuclear

gravitational potential

electromagnetic

Multiple Choice

power lines are an example of this type of ENERGY

sound

mechanical

electrical

nuclear

Multiple Choice

A car speaker is an example of this type of ENERGY

Thermal

Nuclear

Elastic

Sound

Multiple Choice

a microwave has this type of ENERGY

electromagnetic

sound

thermal

elastic

Multiple Choice

What energy conversions take place when you vigorously rub your hands together?

Mechanical => light

chemical => thermal

mechanical => thermal

kinetic => chemical

Multiple Choice

Which kind of energy change occurs when a candle is burning?

Chemical to light.

Light to electrical.

Solar to heat.

Chemical to electrical.

Multiple Choice

Which type of energy transformation occurs when a flashlight shines?

chemical → thermal → electrical

chemical → electrical → light

thermal → chemical → light

chemical → electrical → chemical

Multiple Choice

What type of energy is food energy stored in your muscles?

mechanical

nuclear

thermal

chemical

Multiple Choice

Which type of energy propels a baseball after it has been struck by a bat?

chemical

thermal

mechanical

nuclear

Multiple Choice

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

Light, thermal, and sound

Thermal, chemical, and solar

Sound, mechanical, and electrical

Light, chemical, and mechanical

Multiple Choice

Electrical Energy is transferred to _____ Energy.

Solar

Mechanical

Chemical

Electrical

Multiple Choice

Solar Energy is transferred to _____ Energy.

Mechanical

Solar

Sound

Electrical

AKS 7a - Energy Transformations

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