Share Science 6: Chap 12: L2
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What can light waves travel through?
Empty space, solids, liquids, or gases
What is the speed of light in space?
299,792,458 meters per second (about 300,000 km/s or 186,000 miles per second).
Which type of mirror is used in telescopes?
concave
What is the focal point?
Point where light rays meet
A ray strikes a mirror, and the reflected ray makes a 50° angle with the surface. What is the angle of incidence?
40°
If the angle between the incident ray and the reflected ray is 90°, what is the angle of incidence?
45°
A ray strikes a plane mirror with an angle of incidence of 30°. Find the angle between the incident ray and the reflected ray.
60°
What is refraction?
Bending of light when it passes from one medium to another
Which lens is thicker in the middle?
convex
Which mirror gives a wide-angle view?
convex
What happens to your image in a mirror?
It's reversed left to right
What is the law of reflection?
Angle in = angle out
What does opaque mean?
blocks all light
When does a light ray stop traveling in a straight line?
When it moves through a new material
