Sound
Sound travels in __________.
waves
Light travels in a ___________.
Straight line
The highest point of a wave is called the _______.
crest
Sound travels the fastest in _____because the molecules are close together.
Name the type of matter.
Solids
The loudness or softness of sound is called its ______.
volume
Which part of the ear receives sound waves?
ear drum
Light travels (faster or slower) than sound.
Faster
The lowest point of a wave is called a ________.
trough
When the sound wave bounces back it is reflected and sounds like the original sound. What is this called?
An echo
The number of vibrations an object makes in a certain amount of time.
frequency
The back and forth movements of an object is called ________. They can be powerful, weak, fast or slow.
Vibrations
Name the colors of the electromagnetic spectrum.
ROY G BIV
Red, Orange, Yellow Green, Blue, Indigo, Purple
The distance between the highest point of two waves is called a ______.
wave length
These types of waves, travel away from it's source in all directions.
sound waves
Animals such as dolphins and bats use reflected sound waves to locate objects. This is called _______.
Echolocation
Sound travels (faster or slower) than light.
slower
When light goes into or stops on an object, the light has been __________.
Absorbed
The height of a wave is called _________. It shows how much energy the wave is carrying.
amplitude
Sound travels the slowest in _______ because the molecules are the farthest apart.
Name the type of matter.
Gases
The highness or lowness of a sound is called its _____.
pitch
Sound needs this in order to travel. It is the reason outer space is silent.
A Medium (solids, liquids, gases)
Space is a vacuum and has no atoms to vibrate.
The bouncing back of light waves when they hit an object with a very smooth and shiny surface, like a mirror, is called __________.
Reflection
CHALLENGE:
This is a two symbol system that is used to transmit information. It often uses the 0s and 1s that act like on and off switches to communication information.
Binary Codes
The process of how we hear.
Sound enters ear => vibrates eardrum => brain
Amplitude is a measure of how loud a sound wave is and is measured in units called ______.
Decibels