Energy conversion test review

In order to power an elevator, a motor must convert electrical energy into which type of energy?

• Thermal Energy

• Mechanical Energy

• Nuclear Energy

• Light Energy

Tags

NGSS.HS-PS3-3

What kind of energy transformation is taking place when a hair dryer is used?

• Mechanical energy is being transformed into thermal energy

• Magnetic energy is being transformed into wind energy

• Electrical energy is being transformed into thermal energy

• Sound energy is being transformed into electrical energy

Tags

NGSS.MS-PS3-5

The pictures show four household items that transform energy.

Which picture shows the transformation of electrical energy into thermal energy?

• Q

• R

• S

• T

Coal is the fuel source used to power the steam engine on trains. Which statement best describes the energy transfer that takes place in a train powered by a steam engine?

• The coal's chemical energy is transformed into mechanical energy

• Most of the coal's chemical energy is destroyed as the coal is burned

• The coal's electrical energy is captured and used to power the train.

• All of electrical energy is released as heat and light when it is burned

Tags

NGSS.MS-PS3-5

What transformation occurs when a telephone rings?

• Electrical energy is transformed into kinetic energy

• Potential energy is turned into sound energy

• Sound energy is transformed into thermal energy

• Electrical energy is transformed into sound energy

Lena is playing with a remote-controlled car in her backyard. She knows that the car uses its wheels to move and is powered by a battery. Which of the following describes how the car uses energy to move?

• Mechanical energy transforms to heat energy

• Electrical energy transforms to light energy

• Heat energy transforms to mechanical energy

• Electrical energy transforms to mechanical energy

Tags

NGSS.MS-PS3-5

A television is a device that converts electrical energy into light and sound energy. What happens to the energy that enters a television but is NOT converted into light or sound?

• It returns to the electrical source.

• It is stored in the television.

• It is released as heat energy.

• It is destroyed in conversion

Mr Rodando's class is investigating different types of energy. In which of the following observations would the students observe both electrical and mechanical energy?

Select two correct answers.

• Doing jumping jacks

• Turning on the fan

• Standing near a campfire

• Singing and running in place

• Turning on a vacuum

A car uses the force of friction from its brakes to slow down, which causes the breaks to heat up. As the car slows down -

• A thermal energy from the brakes is converted to electrical energy

• thermal energy from the moving tires is converted to mechanical energy

• electrical energy from brakes is converted into mechanical energy

• mechanical energy from the moving tires is converted to thermal energy

Tags

NGSS.MS-PS3-5

Which of the following is an example of a transformation of chemical energy into electrical energy?

• An oil lamp lighting up a room

• A car battery making headlights shine

• Sunlight providing power to a solar calculator

• A blowtorch welding two pieces of metal together

Tags

NGSS.HS-PS3-5