Sound terms
All sounds are caused by …..
vibrations
What do we call the way light behaves when we look in a mirror?
reflection
How does sound move?
Through waves that move in a circular motion going out in all directions
If you place a pencil in water, why does it appear to be broken?
a) reflection b) refraction
c) magnification d) frequency
B refraction, the water makes the light rays bend.
What part of the body receives the message when we see or hear something?
The brain.
What causes a pitch to be high?
An object is vibrating quickly.
What happens when an object blocks all of the light?
It creates a shadow.
What type of matter makes the best amplifier?
A solid such as wood
The skateboarder in the picture has cast a shadow. Where would the light source be located?
In front or behind him?
Behind him.
If you made a straw flute, why would you cut holes in the straw?
You could make the straw short or long by covering and uncovering the holes and your straw could make more than one pitch.
What causes a pitch to be low?
An object is vibrating slowly.
How do we describe an object that lets all the light through?
transparent
The number of waves that pass a point in one second is called ....
a) crest b) trough
c) wavelength d) frequency
D frequency
The space between the tops of the sound wave is called....
a. crest b. trough
c. wavelength d. frequency
C wavelength
When something vibrates what does it do to the air molecules?
The energy pushes the air molecules close together (compression) and then they space back out again. This happens over and over again.
What cause a sound to be loud?
More energy has been used to make the object vibrate.
How do we describe an object that lets some of the light through?
translucent
How does sound travel from a drum to a person's ear?
Waves of sound travel through the air
Why do objects appear to be larger in water?
Water bends the light and makes the object look bigger. Works like a magnifying lens.
What does a prism do to light?
It bends the light rays showing your the spectrum.
100 bonus points of you can list the colors of the spectrum in order.
What is an echo?
When a sound wave hits something and bounces back.
What do we call an object that does not allow any light through?
opaque
If you had a wind chime with long and short metal tubes. Which tubes would make a low pitch?
The long tubes because the vibrations would be moving slower.
A student gathered these objects for her project: a flashlight, a mirror, a piece of cardboard, a piece of clear wrap and a piece of waxed paper. She pointed the flashlight at each object. What question could she be investigating?
How do different objects affect a beam of light?
Why can you hear a sound, such a tapping, better if you lay your head on a wooden table?
The wood is a solid and the molecules are closer together and so they vibrate more.