Vocab
What is the energy of motion?
kinetic energy
When a light is turned on, heat energy is changed to light energy
false
What will happen when you put a metal spoon into hot water?
a. it will begin to cool the water off
b. the spoon will feel cool to the touch
c. the spoon will feel warm to the touch
d. the spoon will melt
c. the spoon will feel warm to the touch
What type of energy comes from the sun?
Solar, Light, thermal (heat)
What is it called when light bounces off an object?
Reflecting
What energy is the only energy you can see?
light
Light travels from its source in wavy lines in all directions
false
What do we call objects that only allow some light to travel through them?
a. transparent
b. translucent
b. opaque
d. reflective
b. translucent
kinetic
What is it called when light bends and changes direction?
Refracting
Another word for heat energy
Thermal
Energy can change from one form into another
true
The ______ is the main source of light on Earth
a. moon
b. stars
c. electricity
d. sun
d. sun
what type of energy does a car stopped at a stop sign have?
potential
What happens when we burn fuels such as coal and gasoline?
a. we release kinetic energy to do work
b. we change heat energy to light energy
c. we release the potential energy within them to do work
d. we change electrical energy to potential energy
c. we release the potential energy within them to do work
Potential energy
false
A moving object has ______ energy
a. potential
b. kinetic
c. sound
d. light
b kinetic
A tv has what type of energy?
electric, light, sound
Why can you see yourself in a mirror?
a. because light energy is absorbed by the mirror
b. because light energy contains different colors
c. because light energy reflects off the mirror
d. because light energy travels through the mirror
c. because light energy reflects off the mirror
What is the ability to do work?
Energy
Dark colors absorb more light than lighter colors
true
The sun reaches the earth as what two types of energy?
a. potential and kinetic
b. light and thermal
c. sound and light
d. kinetic and heat
b. light and thermal
When you yell, what kind of energy do you make?
sound
wood, brick, and stones are examples of ______________ objects.
a. transparent
b. translucent
c. opaque
d. reflective
c. opaque