Anatomy of a Wave
The highest point of a transverse wave.
What is the crest?
Sound waves require this "stuff" (solid, liquid, or gas) to travel through.
What is a medium?
When light hits a mirror and bounces off at the same angle
What is Reflection?
These waves have the longest wavelength and are used to broadcast music to your car.
What is Radio Waves?
Jin is watching a pelican floating on the surface of the ocean. He notices that the pelican bobs up and down with each passing wave. Later in the day, he notices that when the pelican moves up with the wave, it is moving higher than before, and when the pelican moves down with the wave, it is going lower than before. Which best explains Jin’s new observations?
A: These ocean waves have more energy than those observed earlier.
B. These ocean waves have a lower frequency than those observed earlier.
C. These ocean waves have a smaller amplitude than those observed earlier.
D. These ocean waves have a longer wavelength than those observed earlier.
What is A
These ocean waves have more energy than those observed earlier.
The distance between two consecutive crests or two consecutive troughs.
What is wavelength?
This property of sound is determined by frequency; a high frequency results in a high _____.
What is pitch
The bending of light as it passes from one medium (like air) into another (like water).
What is Refraction?
The only part of the Electromagnetic Spectrum that human eyes can actually see.
What is visible light
In a treehouse, Johnny leaves a hole in the roof to let in some light. The light coming through the hole will shine on only one spot inside of the treehouse at a time. Johnny places a clear bottle full of water in the hole, so half of the bottle is above the roof, and the other half is inside the treehouse. The sun hits the bottle and lights much of the inside of the treehouse. Why did Johnny’s method with the clear bottle full of water work to light the treehouse?
A. The water absorbs some of the light.
B. More of the light passes through the water than through the air.
C. The lights path bends as it passes from air to water and again from water to air.
D. Light can go through the water in only one direction, while it can go in many directions in air.
C The light bends as it passes from air to water and again from water to air.
This measurement describes the "height" of a wave and is related to the amount of energy it carries.
What is amplitude?
Unlike light, sound cannot travel through this "empty" area because there are no molecules to vibrate.
What is Vacuum?
These three colors are the "Primary Colors" of light.
What is Red Green Blue
High-energy waves used by doctors to see your bones.
What is X rays
A designer wants to produce a visual effect and needs rays of visible light to strike a surface and bounce off of that same surface going in one direction. (2 correct answers)
A. black material
B. rough surface
C. smooth surface
D. opaque material
C and D
A type of wave, like sound, where the particles move back and forth in the same direction as the wave.
What is a longitudinal or compression wave?
When a sound wave hits a hard surface and bounces back to your ears.
An object that allows all light to pass through clearly is called this.
What is Transparent
These waves are just below red light and are felt as heat.
What is infrared?
Order the materials to show the order in which sound travels through them, with 1 as the slowest and 4 as the fastest. Densities are next to them.
fresh water 1.00
ocean water 1.03
aluminum 2.70
air 0.0013
Air, fresh water, ocean water, aluminum
The number of waves that pass a fixed point in a given amount of time, usually measured in Hertz.
What is frequency?
Humans perceive the amplitude of a sound wave as this.
What is volume?
You see a red apple because the apple _____ all colors except red.
What is Absorbs
These waves have the highest energy and shortest wavelengths on the spectrum.
What is Gamma Rays
Some materials can reflect or absorb light and sound waves. Structures that are designed to serve particular functions can take advantage of these properties. Which places reflect sound or light, which places absorb sound or light?
A. “shell,” or rounded wall behind a band on an outdoor stage that has no sound system
B. the walls of the quiet reading room at a library
C. safety vest worn by nighttime roadwork crew members
D. the projection screen at a movie theater
A reflects
B absorbs
C reflects
D reflects