Phys. Science Honors Waves Test

A wave has a frequency of 4 Hz Determine the period of the wave.

?

What are the 3 main regions of the ear?

Inner, outer, middle

Who was the color wheel first invented by?

Isaac Newton

Which of the following describes the effect of a concave mirror on light rays?

It reflects light rays inward

Name three uses for each type of wave

T-Waves - vibrations in strings, ripples on water surface and electromagnetic waves L-Waves - Sound waves, seismic P-Waves, Particle velocity S- Waves - waves in the ocean and ripples in a cup of water

How can X-Rays make pictures of the inside of solid objects?

X-rays have high energy and can penetrate matter that light cannot

Explain the difference among opaque, transparent, and translucent materials. Name two objects made from each type of material.

a transparent object is one that lets light pass through with no shadows formed, eg. clear window, clear glass jar

What determines the loudness of a sound wave?

amplitude

The energy of sound waves has been converted into an electronic signal that can what?

be processed and stored

What color does blue paint absorb the least of?

blue

How do musical instruments vary pitch?

changes the frequency of standing waves

What is the worlds main source of light?

sun

List the kinds of waves included in the electromagnetic spectrum, from longest to shortest

radio waves, microwaves, infrared, optical, ultraviolet, X-rays, and gamma-rays

What are the primary colors of light?

red, green, blue

Which term describes the process of a wave bouncing off a surface?

reflection

At what angle do transverse waves travel?

right

Formula for speed of a wave

s=wf

What is an example of a compression wave?

slinky

Through what does a wave carry energy?

solid, liquid, space

What is the amplitude of a wave?

the distance from the center line (or the still position) to the top of a crest or to the bottom of a trough.

If the frequency of a wave doubles, which of the following could be true?

the pitch gets higher

Are fluorescent light bulbs used in schools and buildings ?

true

True or False: Moving particles produce electromagnetic waves.

true

Electromagnetic waves are made by...

vibrating electrical charges

How are speed, wavelength, and frequency related?

wavelength=speed/frequency

Is a mirror semi-reflective?

yes

How fast does light travel in a vacuum?

3.00 x 108 m/s

What makes red, green and blue primary colors?

Primary colors cannot be made from other colors

How is radar used to determine the speed of a car?

Radar sends out radio waves and uses the change in frequency of the reflected waves to calculate the speed of an object

Which of the following describes what happens when waves run into each other and become larger?

constructive interference

The highest point of a wave

crest

An electromagnetic field exists only when there is a...

current

What is the process in which white light separates color?

dispersion

A sound with a high pitch will always have a high what ?

frequency

What unit is frequency measured in?

hertz

light is emitted when an object gets hot enough to glow

incandescent

What happens to the intensity of light as photons move away from the light source?

it decreases

Which of the following describes the effect of a Convex mirror on light rays?

it reflects light rays outwards

What source of light generates a beam of coherent light?

laser

What are the 3 main types of mechanical waves?

longitudinal, transverse, surface