Travel
How does light travel?
In straight lines.
What is reflection?
Light bouncing off of an object
What is refraction?
The bending of light as it passes from one material to another.
What happens when light is absorbed?
It turns into heat energy.
What are the primary colors of light?
Red, green, and blue.
What happens if you block light with your hand?
It creates a shadow.
Give an example of a smooth surface that reflects light well.
Glass, mirror, calm water
Why does a straw look "broken" in a glass of water?
Light bends when moving from air to water.
Which absorbs more light: a white shirt or a black shirt?
Black shirt
As frequency of a wave increases, what happens to the wavelength?
It decreases.
True or False: light can bend around corners
False
Why do you see yourself in a mirror but not on paper?
Mirrors allow light to reflect, where paper does not.
What happens to the speed of light when it passes from air into water?
It slows down.
Why does black pavement feel hotter than grass on a sunny day?
It absorbs more light.
What happens to white light when it passes through a prism?
It separates into different colors.
What are the four ways that light can interact with materials?
Transmission, reflection, refraction, and absorption.
Draw a light ray hitting a mirror at an angle. Show the reflected ray.
Should show the same angle.
Name something that uses refraction to work.
Glasses, prism, rainbow, telescope, microscope, magnifying glass.
Why does a white car heat up less than a black car in the sunlight?
Which color of the rainbow has the shortest wavelengths?
Violet
Materials can be classified in what three ways when interacting with light?
Transparent, translucent, and opaque
If light hits a mirror at a 45 degree angle, what angle will it bounce off?
45 degrees
Why do rainbows happen?
Sunlight refracts and splits into colors inside water droplets, which are acting like tiny prisms.
If you shine a light on a red apple, why does it appear red?
Red is reflecting into our eyes, all other wavelengths of light are being absorbed.
Which color of the rainbow has the longest wavelengths?
Red