Sound
What is sound made of?
Waves
What is faster than the speed of light?
Nothing
What is a force?
A force is a push or a pull that can make something move.
What are the types of forces?
Contact and Non-Contact Forces
What is sound produced by?
Vibrations
What is the difference between natural and artificial light?
One is made by humans and one occurs in nature
What does a force do?
Make something move, stop, speed up, slow down, or change directions
What are the three types of contact forces?
Push, pull, friction
What happens to sound in a vacuum?
Sound cannot be made in a vacuum
Define opaque, transparent and translucent
Opaque - no light goes through
Translucent - some light goes through
Transparent - all light goes through
A pull.
What are the two types of non-contact forces?
Magnetism and gravity
Explain the difference between high and low frequency and high and low volume
Frequency is the pitch, and volume is how loud.
What is light made of?
photons
When a soccer ball slows down as it rolls along the grass what force is this an example of?
Friction
An apple falls from a tree and hits the ground. What two forces are happening in this scenario?
Gravity - the apple falling
Push - the apple hitting the ground