Light
light travels in ______ waves.
transverse
Sound is a form of ______.
energy
An object that separates white light into the colors that make it up
prism
The part of an experiment that is being measured is called the _________.
dependent variable
Sound travels best through ____.
solids
The bending of light when it passes from one material into another
refraction
Sound waves are called ___________ waves.
Compression or Longitudinal
Dolphins and bats use ________ to reflect sound off of objects.
echolocation
Items that stay the same throughout the experiment are called _______________.
constant variables
This state of matter is where molecules are furthest apart
gas
What is the range of human hearing?
20 to 20,000 hertz
An idea about the results of an experiment is referred to as a __________. (If, then statement)
Hypothesis
Sound needs ______ in order to travel
matter
Speed of sound in air at room temperature is ____.
343 m/s
The part of the experiment that is purposefully changed in order to test the outcome is called the ______.
independent variable
Can sound travel through outer space? Why?
NO, there are no molecules to vibrate
What is the visible spectrum?
The portion of the electromagnetic spectrum that is visible to the human eye. Visible light.
The human ear has ___________ parts:
1-______________
2-______________
3-______________
Three parts:
1- Outer ear.
2- Middle ear.
3- Inner ear.
The distance between two compressions, for sound, or two crests, for light, is called a _________.
wavelength
When you do an experiment more than one time, this is called _______.
repeated trials
_______ is anything that has a mass and takes up space.
matter