SPS Unit 7: Wave Properties and Electromagnetic Radiation

light wave

• Rays that come from a light source. (Ex: visible light-ROYGBIV)

• Waves that are produced by sound vibrations.

• Particles that travel through a vacuum without a medium.

• Waves that can only be seen under a microscope.

sonar

• A technique for detecting and determining the distance and direction of underwater objects by acoustic means.

• A method for measuring the speed of sound in air.

• A system for tracking aircraft using radar technology.

• A process for analyzing soil composition using sound waves.

transmission

• the passage of light through an object

• the reflection of light off a surface

• the absorption of light by a material

• the scattering of light in different directions

echo

• a reflected sound wave

• a type of musical instrument

• a loud noise

• a sound that travels in a straight line

refraction

• The bending of a wave as it passes at an angle from one medium to another

• The reflection of a wave when it hits a barrier

• The absorption of a wave by a medium

• The scattering of a wave in different directions

wavelength

• Horizontal distance between the crests or between the troughs of two adjacent waves

• The speed at which waves travel through a medium

• The height of the wave from the rest position to the crest

• The frequency of the wave measured in hertz

digital signal

• A signal that encodes information as a string of 1's and 0's

• A continuous signal that varies in amplitude

• A signal that can only be transmitted over analog channels

• A signal that represents physical quantities in a linear form

analog signal

• A type of signal where the data is represented by continuous waves.

• A type of signal that is either on or off.

• A digital signal that represents data in binary form.

• A signal that can only be transmitted over short distances.

volume

• a measure of how loud or soft something sounds

• the amount of space an object occupies

• the speed of sound in a medium

• the frequency of a sound wave

absorption

• takes place when matter captures electromagnetic radiation

• is the process of emitting light from a substance

• occurs when light is reflected off a surface

• is the phenomenon of light bending as it passes through different mediums