Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
32 Cards in this Set
- Front
- Back
|
What did Albert Einstein call light particles?
|
Photons
|
|
|
What is the law of reflection?
|
The angle of incidence always equals the angle of reflection.
|
|
|
What does a convex mirror do to the reflection?
|
It projects it outwards.
|
|
|
What does a concave mirror do to the reflection?
|
It projects it inwards.
|
|
|
What does a convex lens do to the image?
|
It shows the image upside down.
|
|
|
What does a concave lens do to the image?
|
It shows the image right side up
|
|
|
Explain what nearsightedness is.
|
When the eye is to long so you're unable to see far away.
|
|
|
Explain what farsightedness is.
|
When the eye is to short so you're unable to see close up.
|
|
|
What is Total Internal Reflection and how is it used in fiber optics?
|
If light doesn't have enough energy or it hits at the wrong angle it won't pass from one medium to another, it will reflect. Fiber optics sends a message through a wire at the right angle so that it doesn't reflect.
|
|
|
What is the difference between real images and virtual images?
|
Real images are seen upside down. Virtual images are seen right side up.
|
|
|
What are rods sensitive to?
|
light
|
|
|
What are cones sensitive to?
|
color
|
|
|
In words, describe the path light travels though the eye.
|
Light enters the pupil, reflects off the cornea and focuses on the retina. There it travels through the optic nerve to the brain.
|
|
|
What is faster light or sound?
|
light
|
|
|
Are sound waves part of the electromagnetic spectrum?
|
no
|
|
|
How/why can we see things?
|
Light reflects off of objects into our eyes.
|
|
|
What are the 3 primary colors in light?
|
red, blue, and green.
|
|
|
What is the most common type of colorblindness?
|
red-green
|
|
|
What is polarized light?
|
Light that is filtered.
|
|
|
What are lasers?
|
Condensed light of one color.
|
|
|
Where are lasers used in everyday life?
|
Supermarket scanners, TV's, etc.
|
|
|
What are the parts of the electromagnetic spectrum?
|
radio waves, microwaves, infrared radiation, visible radiation, ultraviolet radiation, x-ray radiation, and gamma ray radiation
|
|
|
Which part can detect cracks in bones and other solid substances?
|
x-rays
|
|
|
What part was discovered by Wilhelm Roentgen?
|
x-rays
|
|
|
What part is emitted by radioactive substances?
|
gamma rays
|
|
|
What part is used in cooking?
|
microwaves
|
|
|
What part is used in visual entertainment?
|
radio waves
|
|
|
What part was discovered by Guglielmo Marconi?
|
radio waves
|
|
|
What part can burn skin?
|
ultraviolet radiation
|
|
|
What part can be used to sterilize?
|
ultraviolet radiation
|
|
|
What part is used in remote controls?
|
infrared radiation
|
|
|
What part emits heat?
|
infrared radiation
|
