The EM Spectrum
What Part of the em spectrum is most and least harmful to humans.
Most: Gamma Rays
Least: Radio Waves
What is an example of transparent, opaque and translucent material.
transparent: window
Translucent: frosted glass
Opaque: a cotton shirt
If light hits a mirror at 40 degrees at what angle will it be reflected
40 degrees
Where is an image made if you are nearsighted
in front of the retina
What is an example of light changing how people see things?
camera, microscope, Telescope
What are the primary colors of light
green, red, blue
What color(s) gets reflected if we see a ball as red and yellow
red and yellow
What kind of images form from convex lenses
Real or virtual images
What is wrong with your cornea if you are farsighted
it is to short and not curved enough
What are 4 ways to produce light
incandescent light, fluorescent lightm light-emitting diods (LED), Lasers
Where would we put a detector in order to detect x-rays.
in the sky
What happens to the speed of light when it passes through matter?
It slows down
When will an image look upside down when looking through a mirror?
a concave mirror when the object is behind the focal point
How can we correct vision problems
with glasses, contacts, or surgery
How does a microscope change what we see
makes small objects larger
What speed does light travel in a vacuum
speed of light
Why do we see the sky as blue
scattering
How can we make a large image when looking through lenses?
A convex lens when the object is within 1 focal point of the lens
Which part of the eye allows us to see colors.
the cone cells in the retina
How does a telescope change what you see?
It makes large distant objects look closer
List the colors of the spectrum in increasing order.
Why does a straw look broken when looking through a glass filled with water.
refraction
What kind of mirror is used in a rear view mirror.
Convex mirrors
What are the parts of the eye: ( Practice labeling aswell)
Cornea, Retina, Iris, Pupil, Lens, Optic Nerve
How can a camera help see something he or she wouldn't normally see?
The flash can let us see in the dark
The camera can also take photos quickly, where we can see fast moving objects.