Light Energy
This kind of light comes from nature of something living
Natural light
This is made when something vibrates or shakes back and forth
This is how heat moves
Heat transfer
This controls everything your body does
Your brain
This system contains your heart and veins
Circulatory
Without this there would be no life on earth, it is a natural source of light
The sun
Some sounds can be loud and some are quiet - this is called ____
Volume
Two objects rubbing together creates_____
Friction
This pumps blood around your body
Your heart
This system supports your body (helps you stand upright) protects organs
Skeletal system
this type of light comes from man-made sources
Artificial light
A mouse squeak is an example of what kind of pitch?
high
An example or artificial heat is _____
Stove, heat lamp, toaster, etc
These get bigger as you inhale and smaller as you exhale
Lungs
Your brain controls this system
Nervous system
Light travels in a straight line called a _______
A Ray
When a sound wave moves slowly it creates what kind of pitch?
Low
True or False - your body creates heat
True
This helps you digest food
Stomach
This system helps you move
Muscular system
When light hits a solid object it creates a ______
Shadow
What is an object sound can travel through?
Paper, plastic, water, etc
Power that comes from the sun
Largest organ that protects your body
Skin
This system helps you breathe
Respiratory System