Waves

vocab

100

What is a wave

any disturbance that transfers energy through matter or space

200

what is transverse wave

wave that moves in up and down motion

300

what is longitudinal wave

wave that moves in right to left movements

400

what is frequency 

the number of waves passed by in a given amount of time

500

what is an electromagnetic wave

a wave that does not need a medium to travel

multiple choice

100

_{Which of these BEST describes frequency?}

 _{A. the loudness of a sound} 

_{B. the energy that bounces off an object} 

_{C. the number of vibrations per unit time}

 _{D. the bending of light as it passes through substances}

c

200

^{which of these factors affects how fast a sound wave moves?} 

^{A. the kind of material it is moving through}

 ^{B. the amplitude of the sound wave’s vibrations}

 ^{C. the wavelength of the disturbance in the medium}

 ^{D. the type of motion that caused the sound wave to form}

A

300

_{During an earthquake, three types of waves are created. All three waves arrive at a seismograph station at different times because} 

_{A. waves have numerous collisions with objects.}

 _{B. waves have a difficult time traveling through Earth.}

 _{C. waves slow down as they pass from one rock type to another.}

_{D. waves travel through different substances at different rates of speed}.

D

400

A student observes that a ray of light bends where it passes from glass into water. What BEST explains this phenomenon? 

A. The properties of a wave change as it travels from one medium into another. 

B. The energy of a liquid is greater than that of a solid and increases the amount of light in it. 

C. The mass of a ray of light varies in proportion with the density of its surroundings. 

D. A wave consumes energy in a solid but produces energy in a liquid

A

500

_{How does sound usually travel?} 

_{A. An object vibrates, and those vibrations travel through the air in one direction as transverse waves. B. An object vibrates, and those vibrations carry air in one direction as longitudinal waves.}

 _{C. An object vibrates, and those vibrations carry air in all directions as transverse waves.} 

_{D. An object vibrates, and those vibrations travel through the air in all directions as longitudinal waves}

D

C

100

shortest wavelength color

Violet

200

An echo is a sound wave that has been

 

Reflected

300

Which happens to light when it hits a rough surface?

scattering 

400

Which color of light is produced when all of the colors of visible light in the electromagnetic spectrum are combined? 

A. gray B. white C. black D. brown

B

500

Why does sound travel faster through a solid object than in the air? 

A. The atoms in the solid object are farther apart than the atoms in the air.

 B. The atoms in the solid object are closer together than the atoms in the air.

 C. The atoms are smaller in the solid object than the atoms in the air.

 D. The atoms are larger in the solid object than the atoms in the air

B

sound

100

what is loudness

measures how loud a sound is

200

what is hertz

how we measure pitch

300

what is pitch

measures how high or low a sound is

400

what does vibration cause 

sounds

500

How are electromagnetic waves different from other waves? 

A. They have very short wavelengths.

 B. They transmit energy instead of matter.

 C. They can travel through a vacuum and through matter.

 D. They can change direction by reflection when they strike an object

C