What is light?
What is light?
Light is a form of energy-it allows us to see the world around us
True or false: Light moves in curvy pathways
False! Light always moves in straight lines.
You look at a glass window and see things clearly. What type of material is the window?
Transparent!
What is sound?
How does sound move from your vocal cords to someones ear?
Sound travels through the air making Vibrations along the way. Those vibrations reach your eardrum and we hear sound!
What are the four main sources of light?
- fire - sun -biolumineces - electricity
Explain how light reflects.
Light reflects when it hits a surface and bounces back to you.
Which of the following would make the best shadow?
1. A dog
2. Plastic wrap
3. A window
A DOG!
How does sound move?
As sound waves or vibrations
True or false: Sound moves slowly through hard surfaces
FALSE: hard surfaces case sound to move the fastest
True or false: The sun is the primary source of light we require it for life to exist on earth
- Tell one thing that the sun allows for
TRUE
You are stirring your water when suddenly you look down and see that your spoon is all wonky inside the cup! What is the scientific name for what is happening?
Dispersion occurs when light rays bend and things look a bit wiggly or like they are in a slightly different position.
You hold your flashlight up behind wax paper. You cant see the flashlight but you can see some of the light. What is this type of material called?
Translucent!
How high or low a sound is its....
PITCH
True or false: Sound moves the slowest through gas (the air around us)
TRUE
Is electricity a natural source of light or man made (artificial)?
ARTIFICIAL
Dispersion occurs when light hits a prism or water and the droplets cause the light rays to break apart into colors.
What causes a shadow to form?
When an opaque or translucent object blocks some or all of the light a shadow is created.
How long or short a sound is is its....
duration
Absorption
What is bioluminecene? Give an example.
Creatures that can produce their own light.
You are at the park when you look at the slide you get blinded by the light. Why did this happen?
The light from the sun reflected off the slide into your eyes.
Your friend Jimmpy is on the other side of the wall with a flashlight. You can see any of the light. What type of material is the wall?
Opaque!
How loud or quiet a sound is is its....
VOLUME
Explain what happens to sound when it is reflected.
Sound waves bounce of a surface and return to where they started.