Our Eyes
We see thing when light goes ________________.
Into our eyes
Light travels very ________ and __________.
Very fast and in a straight line
What is a source of light?
Something that makes light.
What is a shadow
A dark area behind an object
Is a window transparent, translucent, or opagque?
Transparent
What is the only thing we see?
light
What do we call light bouncing off of an object?
Reflection
What is the biggest most important source of light?
The Sun
How are shadows created?
An object blocks light
What makes something opaque?
No light passes through it.
The optic nerve at the back of our eyes sends signals to _______________.
Our brain
What types of things are good reflectors?
Smooth and shiny
Glass, polished metal, glass, mirrors
What do we call a source of light that was not made by humans?
A natural source of light?
Why are objects able to block light?
Light travels in a straight line.
What makes something translucent?
Some light passes through it, and some does not.
Why cant we look directly at the Sun?
Too much light will damage our eyes.
Why are things with a rough surface poor reflectors?
They reflect the light in many different directions.
What do we call a source of light that was created by humans?
An artificial source of light
When is a shadow larger than the object making the shadow?
When the light source is close to the object?
How do I know that a glass bottle is not completely transparent?
I can see it?
Why do you think we have two eyes?
It helps us see the distance of an object.
Depth perception
How do I know if something does not reflect any light?
I can't see it.
What is the name for a living organism that is a source of light?
Bioluminescence
Why would a shadow be very light?
It might be made from an object that is transparent or translucent.
In which room might you see a window that is translucent?
The bathroom