# ~WAVES~PREQUIZ~2/24/2011~

### 15 terms by dmoss Teacher

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### Compressions

The parts where the coils are close together in a longitudinal wave

### Doppler Effect

Change in the apparent frequency of a wave as observer and source move toward or away from each other

### Convex Lens

Lens such that a beam of light passing through it is brought to a point or focus, lens is thicker in the center

### Concave Lens

A lens that is thinner in the center than at the edges, a lens such that a parallel beam of light passing through it is caused to diverge or spread out

### Electromagnetic Spectrum

The complete range of electromagnetic wave frequencies and wavelengths

### Surface Waves

Combination of transverse and longitudinal waves. The wave moves from one medium to another. EXAMPLE: ocean waves

### Energy

The ability to do work

### Speed

Speed=Wavelength xFrequency,Frequency=Speed/Wavelength,
Wavelength=Speed?Frequency

### Frequency

Is the number of complete waves that pass a given point in a certain amount of time

### Longitudinal (Compressional) Wave

The wave travels in the same direction as the disturbance

### Amplitude

The maximum height of a wave from its rest position;LARGE AMPLITUDE = MORE ENERGY; SMALL AMPLITUDE = LESS ENERGY

### Wave Length

The distance between any two crests or compressions next to each other in a wave; SHORTER WAVELENGTH = MORE ENERGY; LONGER WAVELENGTH =LESS ENERGY

### Transverse Wave

This wave travels up and down while the energy travels left and right. ex: water wave, rope wave

### Electromagnetic Waves

Waves that transfer electric and magnetic energy through the vacuum of space.

### Vacuum

An empty area or space

Example: