# TAKS Science Objective 5

### 35 terms by TerryAP

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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

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

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

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)

Example: