How Light Behaves
True or False: Mirrors are the only objects that can reflect light.
False
Name three light sources.
Light bulb, fire, sun, etc.
The black hole in the human eye is called the...
pupil.
What is it called when you can see things up close, but have trouble seeing things far away?
Nearsighted
What is the colored part on the outside of your eye called?
Iris
Name an object that would cause light to be refracted, or bent/spread out.
wax paper, tissue paper, water, frosted glass, etc.
False
What part of the eye is your cornea?
The clear lens on the outside of the eye that makes a barrier to prevent things from getting in the inside of your eye.
Rub your eye because you could scratch your cornea.
Why do your pupils get larger in the dark and smaller in the light?
They get larger in the dark to allow more light into your eye so you can see better in the dark. They get smaller in the light to allow less light in and prevent damage to your eye.
When light is transmitted through an object, what happens to it?
Light that is transmitted passes straight through the object without changing its path.
Describe what you can see in a cave when a flashlight is on and when the flashlight is off.
When the flashlight is on, you can see your surroundings. When the flashlight is off, you can't see anything because there is no light source.
Tell me three facts about your retina.
1. It is at the back of your eye.
2. It acts like a screen where the light can focus.
3. The image appears upside down on your retina.
What could be a solution to having a lazy eye?
Wearing an eye patch over the strong eye to make the weak eye work harder.
What does our brain do with the separate images from both our eyes? (2 parts to the answer)
It combines the two images into one and flips the images right side up.
When white light shines through a clear object and spreads out into rainbow colors, it is called...
dispersion.
Why can animals see in the dark with just their eyes but humans can't?
Their pupils can get bigger to detect smaller amounts of light.
What would happen if you were born without a cornea lens? (Think about our eye model.)
You could see light and shadows but never a clear image.
Name a part of your face and how it protects your eyes.
Answers will vary.
What causes someone to have blurry vision and have to wear glasses or contacts to make their vision clear?
The front of their eye is a little too close or too far away from the back of their eye, so the light doesn't focus right on the retina.
Name one transparent, translucent, and opaque object.
Answers will vary
Explain what happened to our eyes when we turned the lights off in our classroom vs. when we turned them off in the computer lab. Why did this happen?
When we turned the lights off in our classroom, there was still light coming in so our eyes adjusted to be able to see. When we turned the lights off in the computer lab, there was no light source, so our eyes couldn't detect any light.
What is the purpose of the lens inside the eye?
It focuses the light as it comes through the pupil in order to make it hit the retina just right to create an image.
What could cause you to be completely blind? (Hint: What parts of your eye would not be functioning correctly?)
Your retina does not work correctly or your optic nerve is not able to pass information on to your brain.
How much light is able to be transmitted through a transparent, translucent, and opaque object?
Transparent: all light
Translucent: some light
Opaque: no light