waves

What type of wave is pictured above? I. compressional II. longitudinal III. transverse

I and II only

Why do people see distant events before they hear them?

Light travels faster than sound.

Refraction is the bending of a wave as it passes at an angle from one medium to another. Why would a wave, such as a light wave, bend when it passes from air into water?

The speed of light slows in water.

Which of the following waves has the smallest period?(Assume that all of the diagrams depict a 1 second time interval.)

X. has the most waves

Which of the following waves has the most energy? (Assume the wave diagrams are drawn using the same scale.)

Z. biggest waves

Which of the following waves travels at the greatest speed?

electromagnetic waves traveling through outer space

Constructive interference occurs when the crests of one wave overlap the crests of another wave. What is the result of constructive interference?

increased amplitude

Sound waves are an example of _______ waves.

longitudinal

What part of the wave corresponds to the letter Y?

rarefaction

The frequency of a wave describes

the number of complete waves per unit time.

Which of these is an example of interference?

two different light waves colliding and adding together

What part of the wave corresponds to the letter Z?

wavelength

Which statement describes a difference between electromagnetic and mechanical waves?

Electromagnetic waves do not require a medium, but mechanical waves do.

Cars driving on a highway generate sound waves that travel through the concrete.A sound wave travels at an angle toward the edge of the concrete, which is bordered by muddy soil. Which of the following will most likely happen to the sound wave?

It will be refracted away from the border.

Which of the following is an example of sound waves being reflected?

Tabitha yells into an empty room and then hears her voice several moments later.

All electromagnetic waves travel at the speed of light (300,000,000 m/s). However, even at this speed, if a radio transmission is sent to astronauts on the Moon, there is a delay between the time that the message was sent and the time that the astronauts receive it. Why?

The Moon is very far away from the Earth and it takes time for radio messages to travel.

The frequency of a wave describes the number of complete waves, or cycles, per unit time. The period of a wave is equal to the time that it takes a particle to make one complete cycle. If the period (T) and frequency (f) of a wave can be calculated using the following formula

The period and the frequency are inversely

When a raindrop hits the surface of a lake, circular surface waves form. Which statement is true about these surface waves?

The surface waves cannot be classified as transverse or longitudinal waves.

Sometimes two waves involved in destructive interference have the same amplitude. What would happen to the two waves in this situation?

The two waves would completely cancel each other out.

If a water wave moves under an object such as a fishing bobber or a buoy, the object does not move forward as the wave passes under it. Why?

The water molecules vibrate perpendicular to the direction of the wave motion.

Two transverse waves are traveling through the same media. The wavelengths and periods of the waves are the same, but one wave has a greater amplitude than the other. Which of the following statements is true regarding the two waves?

The waves possess a different amount of energy.

A sound wave requires

a medium to travel through.

Refraction is the bending of a wave as it passes at an angle from one medium to another. The wave bends because the speed of the wave changes between the first and the second medium. Which of the following diagrams correctly represents the refraction of a wave that moves faster in medium b than it does in medium a?

arrows pointed to the side more, b pointing to right side line

In a transverse wave, the medium moves _______ the direction in which the wave is traveling.

at right angles to

What part of the wave corresponds to the letter X?

compression

Sometimes waves interfere with one another. Consider a scenario in which two waves overlap in the following manner:What type of interference will result from this interaction between the two waves?

constructive interference

Two waves can share the same space and pass through one another. When two or more waves overlap, they interfere with one another. What type of interference occurs when the crests of one wave overlap the crests of another wave?

constructive interference

Sometimes waves interfere with one another. What type of interference occurs when the crests of one wave and the troughs of another wave overlap?

destructive interference

When light waves interfere the result is often a pattern of light and dark areas, like those shown above. The dark areas are caused by _______ interference and the light areas are caused by _______ interference.

destructive; constructive

Ms. Auditory strikes two tuning forks, which vibrate at the same frequency, and then moves them close together. As she move the forks closer together, at a certain distance the sound they make is very quiet. This happens because the sound waves are

detraction

Lars is standing in front of his house. His sister, Inga, is standing on the side of the house. Lars yells at his sister, and the sound waves from his voice travel across the front of the house. The diagram below shows Lars and Inga's house from above.Which property of sound waves allows Inga to hear Lars' voice from around the corner?

diffraction

The diagram below shows two different waves of light with the same wavelengths and amplitudes.Which of these would result in destructive interference?

if point 1 and point 5 intersected

Mr. Oratory strikes a tuning fork, then holds it near the top of a hollow plastic tube with a solid bottom.The length of the hollow tube is such that the sound wave from the tuning fork travels down it and then bounces back exactly along the same path. The sound that escapes the tube is louder than before because the sound waves inside the tube

interfere constructively.

Waves interact with different surfaces in different ways. Waves often bounce off objects such as water. What is this form of wave movement called?

reflection

A prism is a device that separates white light waves into the colors of visible light. Which of the following processes allows a prism to work?

refraction

Examine the diagram below. What form of wave interaction is demonstrated by the light?

refraction