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35 terms

TAKS Science Objective 5

STUDY
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acceleration
rate at which velocity changes
amplitude
distance from the resting position to a crest or from the resting position to the trough
constructive interference
caused when two waves line up with one another, resulting in one wave with a larger amplitude than either of the original waves
crest
high point in a wave
destructive interference
caused when the crest of one wave lines up with the trough of the other, resulting in the amplitude being smaller than that of the original waves
electromagnetic waves
waves that can travel through a vacuum (light, radio waves, etc.)
energy
ability to change or move matter
force
mass x acceleration
frequency
measure of how many wavelengths pass a particular point in one unit of time
hertz (Hz)
unit for measuring frequency, equal to one wave per second
interference
process by which two waves meet and occupy the same space at the same time, forming a new wave with different properties
kinetic energy
energy of motion
Law of Conservation of Energy
energy can never be created or destroyed
Law of Inertia
any object in motion will stay in motion and any object at rest will stay at rest until it is acted on by an unbalanced force
longitudinal wave
causes a medium to contract and expand along the direction the wave is travelling
mechanical energy
energy an object has as a result of its position or motion
medium
matter through which a wave travels
momentum
mass x velocity
net force
overall force on an object
nonrenewable resources
energy sources that exist in limited supply
polarized light
light waves that vibrate in only a single direction
potential energy
stored energy
primary waves (p waves)
longitudinal seismic waves
renewable resources
energy sources that can be replaced in a short amount of time
secondary waves (s waves)
transverse seismic waves
seismic waves
elastic shock waves that travel through the earth
speed
distance of travel in a unit of time
surface waves
waves that travel along the boundary between the ground and the air
transverse wave
causes medium to vibrate up and down
trough
low point in a wave
vacuum
a region with no matter in it
velocity
an object's speed in a particular direction
wave
disturbance that transfers energy from one place to another
wavelength
distance from one crest to the next or from one trough to the next
Δ
change in (for example, change in time)