Frequency - a rate of something that repeats over and over

Pulse - a short burst that travels in a wave

Wave - a back and forth pattern of mation that transfer energy

Compression Wave - a wave in which the waves medium is compressed in the same direction as the movement (also called a longitudinal wave)

Longitudinal Wave - a wave in which the waves medium is compressed in the same direction as the movement (also called a compression wave)

Reflection - the bouncing back of waves off an object

Transverse Wave - a wave in which the movement of the waves medium is perpendicular to the movement of the wave traveling through the medium

Nodes - a point where a wave crosses it resting line

Crest - the high point of a wave

Trough - the low point of a wave

Amplitude - the height of the peaks above the resting line in a wave

Wavelength - the length of one wave; can be measured as the distance from the center of one peak to the center of the next peak

Energy - usable power the can be transferred or converted to different forms but cannot be created or destroyed

Mechanical Wave - a wave that can only travel through a medium

Medium - a substance or material (solid, liquid, gas)

Inverse Relationship - a mathematical relationship where if one variable increases, the other decreases

Variable - any factor that can be changed

Prototype - a physical or digital model of a new design

Brainstorm - a process in which people freely make up creative ideas

Constraint - a factor that limits what can be done

Research - the systematic investigation into and study of materials and sources in order to establish facts and research new conclusions

Decibel - (dB) a unit used to measure the amplitude of sound

Criterion - (plural - criteria) a requirement that must be met

Absorb - to take in or soak up