Light
A type of energy you can see...
Light
Name three naturally made sources of light
Sun
Star
Fire
Lightning
Lava
A type of energy you can hear...
Sound
How is sound made?
What is the best type of material to use to reflect light?
smooth, shiny material
A type of object that light can pass through...
Transparent
What type of objects can light not pass through?
Opaque
What is the high and the low part of a wave called?
High - Crest
Low - Trough
How do you measure wavelength?
The distance between
Crest to Crest
OR
Trough to Trough
Dolphins use sound to talk to each other and to locate food underwater. Which best explains how the dolphins are creating sound underwater?
The dolphins are creating vibrations in the water.
An example of a translucent object...
Frosted Glass
Wax Paper
What do prisms do?
They break white light into all the colors of the rainbow.
Frequency is the measure of.... And determines...
The number of crests or troughs that pass by over a certain amount of time and determines how high or low the pitch of the sound is.
Where is the resting point?
The halfway point between a crest and a trough.
When light enters a prism, it
refracts and bends.
How are shadows created?
When light hits an opaque object and is blocked, therefore light does not strike the place behind the object.
What are lenses?
An object that refracts light, a curved transparent objects that bend light waves
The amplitude is the wave's height and is measured by the distance between the resting point and a crest or trough. It also determines the volume.
High amplitude = high volume
low amplitude = low volume
Sound travels fastest through... and slowest through...
Solid, gas
Lisa looks in the mirror and sees that her image is backwards. What is most likely the reason for this?
The light hitting the mirror reflects back in the opposite direction.
How do we see colors?
When light shines on an object, the light is either absorbed or reflected as color. We see the reflected colors.
What is the difference between convex and concave lenses and an example of each...
Convex - curved lens that make objects appear larger (Ex. Telescope or a magnifying glass)
Concave - curved lens that make objects appear smaller and father away (Car mirrors)
What kind of materials absorb most of a sound wave?
Cloth, rubber, and plastic
How is an echo caused?
When a sound wave hits something that is hard, and most of the waves bounces off.
Stacey is investigating the sound a rubber band makes when you stretch it to different lengths and pluck it. How can Stacey best describe the rubber band when it makes sounds that have a low pitch?
It vibrates slowly and makes sound waves that are far apart.