Electromagnetic Waves, Electromagnetic Waves (2)

Electromagnetic Wave

transverse waves consisting of a repeating pattern of changing electric and magnetic forces

Radio Wave

Electromagnetic waves with the longest wavelengths and lowest frequencies

Visible Light

Electromagnetic radiation that can be seen with the unaided eye

Gamma Rays

Electromagnetic waves with the shortest wavelengths and highest frequencies

Law of Reflection

Light bounces off the surface at the same angle that light hits it

Reflection

Occurs when a wave bounces off a surface that it cannot pass through

Scattering

Dust particles and gases in the atmosphere reflect light in all directions

Amplitude

the height of a wave from the origin to a crest, or from the origin to a trough.

Cell Phone frequency

use microwaves

Electromagnetic Waves

a form of energy that can travel through space

EM waves can be.....

reflected; refracted; absorbed; diffracted

Frequency

the number of complete wavelengths that pass a point in a given time.

Gamma Rays

electromagnetic waves with the shortest wavelengths and highest frequencies; dangerous

Infrared Radiation

next higher frequency and slightly shorter wavelengths often found with heat lamps

Microwaves

type of radio wave; shorter

Photon

particle of light energy

Radiant Energy

energy that is transmitted in the form of (electromagnetic) radiation

Radio Waves

Longest wavelength; lowest frequency

Reflection

occurs when a wave striking a surface bounces off of it

Refraction

the bending of waves caused by a change in wave speed

Transverse

matter moves back and forth at right angles, perpendicular

Ultraviolet Light

frequencies slightly higher than visible light

Visible Light

the only types of electromagnetic radiation that we can see

Wave Velocity

describes how fast the wave is traveling

Wavelength

the distance between the crest of one wave and the crest of the next wave

Waves

rhythmic disturbances that carry energy without carrying matter

X-Rays

2nd highest frequency; diagnostic imaging

Hertz

- Unit of measure for frequency

X-Rays

Used to detect broken bones in medical imaging.

Ultraviolet

Our bodies need this to make vitamin-d, also causes sunburns