Energy Transformations Review - 7A & 7B

Energy Transformations Review - 7A & 7B

by Marissa Brown

​AKS 7A

​7a. construct explanations for energy transformations within a system (closed or open) including chemical, mechanical (potential and kinetic energy), electromagnetic, light, sound, thermal, electrical, and nuclear energies (GSE SPS7a)

Multiple Choice

Energy that is caused by vibrations in the air. A form of kinetic energy.

• Light energy

• Electrical energy

• Nuclear energy

• Sound energy

Multiple Choice

Food is a form of this type of energy.

• Light energy

• Chemical energy

• Sound energy

• Thermal energy

Multiple Choice

Objects in motion have ______ energy.

• Sound

• Thermal

• Mechanical

• Electrical

Multiple Choice

What form of energy is represented by fusion on the Sun?

• Nuclear

• Electrical 

• Chemical 

• Gravitational

Multiple Choice

A device that converts electrical energy to light energy.

• A blender

• A light bulb

• A bycycle

• A balloon

Multiple Choice

Turning on the radio is what type of energy conversion?

• sound to light

• electrical to sound

• electrical to light

• light to electrical

Multiple Choice

Turning on the radio is what type of energy conversion?

• sound to light

• electrical to sound

• electrical to light

• light to electrical

Multiple Choice

A tree converts _____ energy from the sun to _____ energy.

• Nuclear → Electrical
• Gravitational → Thermal
• Chemical → Motion
• Radiant → Chemical

Multiple Choice

Describe the energy conversion of a clothes dryer. 

• Chemical→ Thermal and Radiant

• Electrical → Elastic, Thermal and Sound 

• Gravitational → Nuclear, Sound and Thermal 

• Electrical → Thermal, Motion and Sound 

Multiple Choice

A device that converts electrical energy and into thermal energy.

• A Battery

• A Hair Dryer

• A Bicycle

• Your Stomach

Multiple Choice

• A flashlight is on 

• Gasoline burns to power a car 

• A candle burns 

• Electric current runs a refrigerator 

Multiple Choice

4. A group of campers create a campfire by burning several wooden logs.  Which statement best describes the energy transformations that occur when the logs burn?

• Chemical energy from the wood is converted into light and heat energy.

• Heat energy from the logs is converted into chemical and light energy.

• Chemical energy from the air is converted into mechanical and light energy.

• Heat energy from the air is converted into mechanical and light energy.  

Multiple Choice

Which of the following energy transformations occur when a lamp that is plugged into a wall socket is functioning correctly?

• Chemical to light

• Electrical to chemical

• Electrical to light

• Chemical to electrical

Multiple Choice

Which of the following shows an energy transformation from chemical energy to electrical to light energy?

• A bolt of lightning lights the night sky.
• A candle glows brightly in the dark.
• A fire in a fireplace lights up a room.
• A battery causes a flashlight to shine.

Multiple Choice

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

• Electrical to chemical to light
• Sound to chemical to mechanical
• Chemical to electrical to sound
• Light to electrical to thermal

Multiple Choice

People get energy from the food that they eat and transform that energy as they move. Which energy transformations occur as a student rapidly rubs the palms of his hands together?

• mechanical to thermal to electrical
• chemical to mechanical to thermal
• mechanical to chemical to sound
• chemical to sound to electrical

Multiple Choice

Which of the following devices transforms electrical energy into mechanical energy?

• An e-reader
• a fan
• a manual pencil sharpener
• ipod

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

Which of the following shows the correct order of the energy transformations that occur when green plants produce their food from the Sun’s energy?

• chemical to thermal
• light to chemical
• thermal to light
• chemical to electrical

Multiple Choice

The picture shows a microwave oven. As a microwave oven is operated, electrical energy is transformed into all of the following types of energy EXCEPT —

• solar
• light
• thermal
• mechanical

Multiple Choice

Which energy conversion is taking place when you put gasoline in a car?

• thermal -> electrical
• mechanical -> electrical
• chemical -> mechanical
• mechanical -> electromagnetic

Multiple Choice

Energy transformations occur when...

• energy is created through conduction

• energy changes from one form to another

• two forces slide together that are touching

• a chemical reaction takes place

​AKS 7B

​7b. use mathematics and computational thinking to identify the relationships between potential and kinetic energies as applied to the Law of Conservation of Energy.

Multiple Choice

Energy can be created.

• True

• False

Multiple Choice

Energy cannot be destroyed.

• True 

• False

Multiple Choice

The Law of Conservation of Energy states:

• Energy can created or destroyed but not transformed 

• Energy cannot be created or destroyed, it can only transformed

• Energy can't be created, destroyed or transformed

Multiple Choice

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

Multiple Choice

True or False: The person in the picture has a lot of potential energy?

• True

• False

Multiple Choice

True or False: The arrow has mostly potential energy.

• True

• False

Multiple Choice

What would have the greatest kinetic energy?

• A car driving down a hill.

• A person running down a hill. 

• A ball rolling down a hill. 

Multiple Choice

Which is the best example that something has kinetic energy?

• a. a car parked on a steep hill 

• b. a tennis ball rolling across the court

• c. a picture hanging on the wall 

• d. a piece of coal before it's burned 

Multiple Choice

Where would this tossed baseball have the least amount of kinetic energy?

• point W

• point X

• point y

• point z

Multiple Choice

Where would this tossed baseball have the greatest amount of kinetic energy?

• point W

• point X

• point y

• point z

Multiple Choice

What kind of energy is in a rock at the edge of a cliff?

• Potential

• Kinetic