Uses of Energy
What type of energy powers a computer?
A. electrical
B. sound
C. Heat
A. electrical
Energy can change from one form to another.
A. true
B. false
A. true
Headphones use electrical energy and turn it into
A. light energy
B. sound energy
C. mechanical energy
B. sound energy
What form of energy allows you to see yourself in a mirror?
light energy
Energy is
A. the ability to cool
B. what is needed to do work or cause change
C. what stops motion
B. what is needed to do work or cause change
A hand crank to turn a fan uses
A. light energy
B. thermal energy
C. mechanical energy
C. mechanical energy
Energy produced by the movement of electrons
electrical energy
Energy that causes a transfer of heat between materials
A. thermal
B. electrical
C. mechanical
A. thermal
Sound energy allows people to
A. stay warm
B. communicate
C. see lights
B. communicate
A girl riding a bike is an example of what type of energy?
mechanical energy
In thermal energy the faster the molecules move, the greater the
A. heat
B. light
C. sound
A. heat
A lamp uses electrical energy to produce what two other types of energy?
heat and light
A student makes a list of ways electric energy is used at home. Which is NOT an object that uses electric energy?
A. Alarm clock B. Blender
C. Skateboard D. Video game player
C. skateboard
When a lamp is plugged in and turned on it converts ___________ energy to __________ energy.
electrical energy to light energy