1
What is stored energy
potential energy
Energy that is stored in a substance
Chemical energy
When an object moves or does work what is causing this
Energy
What is absorption?
When light or sound waves do not reflect off a substance. Instead the waves are taken in.
How does heat energy cause corn to pop?
The particles in the corn vibrate so fast that that pop because of the built up energy.
What does our body use for energy
Food
Sound is caused by what?
Vibrations
Kinetic energy plus potential energy gives us what?
mechanical energy
What is it called when warm heat energy transfers to a colder substance via touch?
Conduction
What is the difference between high and low pitch?
A low pitch has slow wave vibrations
A high pitch has fast wave vibrations
What is it called when sound and light bounce off of objects so we can see and hear them?
Reflection
What is the energy of motion?
Kinetic energy
What is the purpose of heat energy
We use heat energy to cook and iron clothes
Explain how a coiled spring goes from potential energy to kinetic energy.
The tighter the spring is compressed the more potential energy is being stored. When the spring releases the energy becomes kinetic.
Name three animals that use the reflection of sound waves to find food.
Bat, owl, shark, whales
What object could we see kinetic and potential energy working together
Roller coaster
What is refraction?
Light waves bend as they go through different forms of matter
What is a device that uses energy motion
Car, electric toothbrush, and an electric lawn mower are all examples
Explain how boiling noodles is conduction. Make sure to mention the stove, the pot, the water, and the noodles.
The stove is on and the pot is touching the stove. This causes conduction of the pot. The pot is touching the water on the inside. This causes conduction of the water. The noodles are touching the water and this causes conduction of the noodles.
How do you speed up the particles in a substance?
How do you slow down particles in a substance?
To speed up particles in a substance, you add heat.
To slow down the particles in a substance you remove heat from the object