# Chapter 10 Science Test

leleragi's version from 2016-03-18 20:12

## Section 1 The Nature of Waves

Wave -a repeating disturbance or movement that transfers _______ through matter or space.energy
molecules pass energy on to ______ molecules.nearby
waves carry energy without transporting ______.matter
all waves are produces by something that ______.vibrates
medium - a _______ through which a wave travels.
may be solid, liquid, or ______.
not all waves need a medium to travel through; example: ______.
matter; gas; uv-rays
mechanical waves - waves that can travel only through ______matter
transverse waves - matter in the medium moves back and forth _______ in the direction that the waves travels; example: ______.at right angles; water waves
compressional waves - matter in the medium moves ________ that the waves travels; example: ______.back and forth in the same direction; compression waves
combinations - not purely transverse or compressional; example: water waves, ______ waves.seismic

## Section 2 Wave Properties

waves differ by:
how much ______ they carry
how ______ they travel.
energy ; fast
______ waves have crests- the highest points, and troughs- the lowest points.transverse
compressional waves have dense regions called ______ and less dense regions called ______.compressions ; rarefaction
wave length - the distance between one point in the wave and _________the nearest point just like it
frequency - how many ______ pass a fixed point each second.wavelengths
frequency is expressed in ______ ; as frequency increases, wavelengths ______ ; frequency of a wave equals the rate of ______ of the source that creates it.hertz (hz) ; shortens / decreases ; vibrations
wave ______, or v, describes how fast the wave moves forward.speed
______ (m/s) = wavelength (in m) x ______ (hz)speed (of a wave) ; frequency
light waves travel ______ than sound waves.faster
sound waves travel faster in ______ and liquids than in gas ; light waves travel faster in ______ and ______ than in liquids and solids.matter and liquids ; gases and empty space
a measure of energy in a wave.amplitude
the more energy a wave carries, the ______ its amplitude.greater
amplitude of ______ waves is related to how tightly the medium is pushed together at the compression ; the ______ the compressions, the larger the amplitude and the more energy the wave carries ; the less dense the rarefactions, the ______ the amplitude and the more energy the wave carries. / amplitude of ______ waves ; the distnace from the crest of trough of a wave to the ____________ of the medium ; example: how high an ocean wave appears above the water level.compressional ; denser ; larger ; transverse ; normal position