Topic 3.1
What kind of electromagnetic radiation does the sun give off?
All kinds.
What is the ray model of light?
Light travels in straight lines.
What is the term for light bouncing off an object?
Reflection
What are the three types of mirrors?
Plane.
Convex.
Concave.
What are the two types of lenses?
Converging and diverging
As objects get hotter, they give off more ________ type of electromagnetic radiation.
Infrared.
Thomas Young's experiment shining light through double-slits produced a pattern of light and dark columns. What model of light did this experiment produce?
Wave Model
What is the definition of transparent?
Which type of mirror makes objects seem smaller, but you can see more in the mirror?
Convex
What is a transparent object that causes light to refract?
Lens
Radio
Visible Light
Gamma
X-Ray
Ultraviolet
Microwave
Infrared
As wavelength increases, what happens to the frequency of the wave?
Frequency decreases.
What is the definition of opaque.
Does not transmit any light.
What type of mirror is a satellite dish?
Concave
What is the difference between diverging lenses and converging lenses?
Diverging lens - spreads light rays away from each other.
Converging lens - brings light rays to a single point.
Name two ways in which humans can detect electromagnetic radiation with their bodies?
Feel heat.
See light.
What are photons?
Particles of light.
When you see a blue textbook, what color is being reflected?
Blue.
What type of images do plane mirrors produce?
Virtual
Upright
What part of the eye does most of the refracting?
Cornea
What is an artificial source of light? (Not examples, but define it)
An artificial source of light is a human-made object that produces light.
What is the photoelectric effect?
If light shines on a metal surface, the metal surface can emit electrons.
When you see a black object, what color is being reflected and what color is being absorbed?
No color reflected.
All colors absorbed.
What is the law of reflection?
The angle of incidence = angle of reflection
When light slows down, it bends or refracts. Why does light slow down?
Because the medium is more dense.