Sing it loud, sing it strong Ch. 14 Sound & Light Wordly Wise Sing it loud, sing it strong Ride the wave! Yadda Yadda Yadda Potpourri Q $100 Q $100 Q $100 Q $100 Q $100 Q $200 Q $200 Q $200 Q $200 Q $200 Q $300 Q $300 Q $300 Q $300 Q $300 Q $400 Q $400 Q $400 Q $400 Q $400 Q $500 Q $500 Q $500 Q $500 Q $500 Last Chance

$100 Question from Wordly Wise Clear glass is an example of a(n) _________ material.

$100 Answer from Wordly Wise transparent

$200 Question from Wordly Wise Light rays cannot pass through a material that is ____________.

$200 Answer from Wordly Wise opaque

$300 Question from Wordly Wise A sound wave with a high frequency will also have a high ______________.

$300 Answer from Wordly Wise Pitch

$400 Question from Wordly Wise The distance from one point on a wave to the next similar point on a wave is known as _____________.

$400 Answer from Wordly Wise wavelength

$500 Question from Wordly Wise ___________ is bending that results from a light wave changing speed as it moves at an angle from one medium to another.

$500 Answer from Wordly Wise Refraction

$100 Question from Ride the wave! When a light wave is taken in by an object, __________ occurs.

$100 Answer from Ride the wave! absorption

$200 Question from Ride the wave! Which item can a sound wave NOT travel through? (solid, liquid, gas, vacuum) Explain why.

$200 Answer from Ride the wave! Sound waves cannot travel through a vacuum because there are no matter particles to carry the sound.

$300 Question from Ride the wave! True/False: To hear a higher-pitched note on a guitar string you should pluck the string harder. (False statements need to be corrected.)

$300 Answer from Ride the wave! False! To hear a higher-pitched note on a guitar string, you should shorten the string by pressing on the frets.

$400 Question from Ride the wave! True/False: Radio waves, ultraviolet rays, and gamma rays are all longitudinal waves.

$400 Answer from Ride the wave! False! They are all part of the electromagnetic spectrum.

$500 Question from Ride the wave! How does an echo form?

$500 Answer from Ride the wave! When a sound wave travels and hits a hard, smooth surface, the wave reflects or bounces back, resulting in an echo.

$100 Question from Sing it loud, sing it strong Materials that let some light rays pass through but scatter some of the other rays are ____________.

$100 Answer from Sing it loud, sing it strong translucent

$200 Question from Sing it loud, sing it strong What is sound?

$200 Answer from Sing it loud, sing it strong Sound is a form of energy carried by waves through matter.

$300 Question from Sing it loud, sing it strong What are two types of waves?

$300 Answer from Sing it loud, sing it strong Two types of waves are transverse and longitudinal.

$400 Question from Sing it loud, sing it strong What type of pitch does a high-frequency sound have?

$400 Answer from Sing it loud, sing it strong A high frequency sound has a high pitch.

$500 Question from Sing it loud, sing it strong A bird perched in a tree hears the chirping of another bird. A whale hears the songlike sound made by another whale swimming near it. Which sound travels faster, the bird’s chirping or the whale’s singing? Explain how you know.

$500 Answer from Sing it loud, sing it strong Since sound travels more quickly in water than in air, the sound produced by the whale travels faster.

$100 Question from Yadda Yadda Yadda A wave bouncing back off an object or surface is known as ____________.

$100 Answer from Yadda Yadda Yadda reflection

$200 Question from Yadda Yadda Yadda A tuba is played at a school function. You are seated in the front row and your little brother covers his ears. Your parents decide to move to the back row. Your little brother uncovers his ears and asks you why it sounds different in the back of the room. Explain why.

$200 Answer from Yadda Yadda Yadda The reason it sounds different is because when you are in front of the tuba player, the sound is very loud and as the sound travels through more matter and farther away, it get softer.

$300 Question from Yadda Yadda Yadda Why does a light wave travel more slowly through a gas than through a vacuum?

$300 Answer from Yadda Yadda Yadda When a light wave enters a gas, it interacts with the gas particles. This slows the speed of the wave. Because a vacuum is empty space that contains no particles of matter, there is nothing to slow down the light wave.

$400 Question from Yadda Yadda Yadda Explain why a wave with a short wavelength has a high frequency.

$400 Answer from Yadda Yadda Yadda Wavelength refers to the distance between one point on a wave to the next similar point on a wave. Frequency refers to the number of waves that pass a point in one second. If a wave has a short wavelength, many more cycles will be able to be completed in one second, which means the frequency will be high.

$500 Question from Yadda Yadda Yadda Why does sound travel fastest in solids and slowest in gases?

$500 Answer from Yadda Yadda Yadda The particles in most solids are more strongly attracted to each other. They respond and bounce back fairly quickly to sound vibrations. So sound travels fastest in solids. The particles in gases are much less attracted to each other, and they do not respond and bounce back easily to sound vibrations. So sound travels slowest in gases.

$100 Question from Potpourri A(n) _____________ is the part of a sound wave where particles are close together.

$100 Answer from Potpourri compression

$200 Question from Potpourri The number of times a wave makes a complete cycle in a second is its ______________.

$200 Answer from Potpourri frequency

$300 Question from Potpourri How does a wind instrument produce sound?

$300 Answer from Potpourri A musician blows air across a hole in the instrument and the particles in the column of air vibrate, producing sound.

$400 Question from Potpourri What colors of light make up the visible spectrum?

$400 Answer from Potpourri Red, Orange, Yellow, Green, Blue, and Violet

$500 Question from Potpourri How is light refracted?

$500 Answer from Potpourri When light rays pass from one medium to another at an angle, they change speed. The change in speed causes the light to refract or bend.

Last Chance What happens to light that is refracted through a convex lens? A concave lens?

Last Chance Answer In a convex lens, rays bend in toward the middle of the lens. In a concave lens, rays bend out toward the edges of the lens.