Types of Energy
An object's potential energy plus its kinetic energy
Mechanical Energy
Sound travels in _______.
Waves
Energy cannot be created or destroyed.
True
The ability to do work or cause a change
Energy
________ describes how high or low a sound is.
Pitch
An object can have different forms of energy at the same time.
True
Light energy. When we see color in an object, it is because the object is absorbing all other colors and it is reflecting the color pink, causing us to see that color.
_________ is energy caused by electric charges.
Electric energy
When sound waves go into a material, we say they are ______.
Absorbed
When you open the door to the outside in the summer, the cool air flows outside.
False. Hot air pushes out cool air.
At the top of a hill, there is mostly potential energy. When the coaster starts to go down the hill, it loses potential energy and gains more kinetic energy.
Storing food is an example of what energy?
Chemical Energy
When light rays are blocked, this produces a _______.
Shadow
False. The angle of incidence=the angle of reflection
What happens during light refraction?
When light bends as it passes from one substance to another.
The energy of moving particles of matter is _______.
Thermal energy
What is our main source of light energy?
The sun