What is Light?
In what direction does light travel?
In a straight line (rays).
Why can we see different colors in objects?
Because objects absorb all other colors and reflect only one.
In the straw experiment, what happens when you look through a bent straw?
You cannot see the light source because light cannot bend with the straw.
Light continues to travel in a straight line until what happens?
Until it hits an object that blocks its path.
What color do we see when an object reflects all colors of light?
What does the straw experiment prove about light?
Light travels in a straight line.
What does an object do with colors it does not reflect?
It absorbs them.
What color do we see when an object absorbs all colors of light?
Black
In real life, what is one piece of evidence that shows light travels in a straight line?
Shadows or light beams from a flashlight.
In the experiment with the straw, why could you see the candle through the straight straw but not the bent one?
Light travels in a straight line, so it cannot bend with the straw.
Who discovered the spectrum of colors that make up white light?
Sir Isaac Newton
What would you need to see in a dark room?
A Light source
What is the main sense organ that detects light?
The eyes
What happens when light is passed through a prism?
It separates into different colors.
Why can't we see colors when it's completely dark?
Because we need light to reflect off objects to see their colors.