EM Spectrum
An Electromagnetic wave travels fastest in a _______.
Gas or a vacuum where there are no atoms to slow it down.
Sound travels fastest in a _______ because of the INCREASED or DECREASED distance between the particles.
SOLID and DECREASED
When waves bounce off of an object
What is reflection
This is the highest point of a transverse wave.
Crest
The back of the eye where an image should be focused
What is the retina
How is the energy on the EM spectrum organized? From ______ to ______
longest wavelength to shortest; from slowest to fastest
These are the two parts of a sound wave.
When a wave hits an object and then goes around the object, it is ________________.
What is diffracted
trough
The only part of the EM spectrum we see is _______________.
Visible Light
What color of light has the longest wavelength (least amount of energy)?
Red
The type of wave that makes up sound waves
What is longitudinal or compressional
This happens when a wave moves from one medium to another
What is refraction?
The only part of the electromagnetic spectrum we can see.
Visible light
Our _________ vibrates first to allow the energy to pass on for us to hear.
Eardrum
What is the most dangerous part of the EM spectrum that can harm us?
Gamma Rays
Why can't sound travel in space or a vacuum?
Sound must have atoms (especially gas atoms) in order to travel, and there are no atoms in a vacuum or space.
What kind of wave moves parallel to the direction of the movement?
We see the color red because red is _______ and all the other colors are _____________
reflected, absorbed
We see different colors because our rods pick up the different wavelengths that are ___ from an object...
What is reflected
All colors of light hit the object and are absorbed except the color we see, which reflects and goes into our eye.
The speed of a wave is measured by how close the crests are or _________ measured in Hz.
Frequency
The speed of sound depends on two things.
What is the medium and temperature.
What kind of wave has energy that is perpendicular to the motion of the matter.
What is transverse
when the frequency of a waves increases, the wavelength will
decrease
The three bones of the middle ear
What is hammer (malleus), anvil (incus), and stirrup (stapes)