Mirrors Lenses

Question 1

Opaque

Answer 1

Prevents light from getting through

Question 2

Translucent

Answer 2

Most light rays get through but are scattered in all directions

Question 3

Transparent

Answer 3

Allows light to pass through freely

Question 4

What is the law of reflection

Answer 4

The angle of reflection is equal to the angle of incidence

Question 5

What is transmit

Answer 5

Transmit means to give off something

Question 6

Absorb

Answer 6

Means to take in something

Question 7

What is reflect

Answer 7

Reflect means to bounce off something

Question 8

What is refract

Answer 8

Refract is when light bends

Question 9

Concave mirrors

Answer 9

Reflective surface that curves inward and can magnify objects

Question 10

Convex mirror

Answer 10

A reflective surface that curves outward

Question 11

Types of Blindness

Answer 11

Snow blindness, night blindness, color blindness

Question 12

Concave lens

Answer 12

Lens that is thinner and flatter in the middle than around the edges.
Refracts light rays so they spread out

Question 13

Convex lens

Answer 13

Thicker in the middle then around the edges focuses light rays at a focal point

Question 14

Converging

Answer 14

Coming together at a point

Question 15

Diverging

Answer 15

Spreading away from each other

Question 16

Cone cells

Answer 16

Cone shaped cells located in the retina that absorb light they allow us to see color in bright light

Question 17

Cornea

Answer 17

A transparent tissue covering the iris and pupil of the eye

Question 18

Focal point

Answer 18

Supplant at which converging light rays meet or from which light rays diverge

Question 19

Iris

Answer 19

Colored ring of muscle surrounding the pupil

Question 20

Lens

Answer 20

Curved piece of transparent material that refracts in such a way as to converge or diverge parallel light rays

Question 21

Optic Nerve

Answer 21

The nerves that connects the eye to the brain

Question 22

Plane mirror

Answer 22

Flat smooth mirror that reflects light

Question 23

Pupil

Answer 23

Dark transparent region in the center of the Eye where light enters

Question 24

Rod cells

Answer 24

Cylinder shaped cells located at the retina that absorb light

Question 25

Retina

Answer 25

The inner lining of the back of the containing light-sensitive rods and cones that convert light images into electrical signals for interpretation by the brain

Question 26

Sclera

Answer 26

And opaque tissue surrounding the cornea

Question 27

What is a line of Normal

Answer 27

The line of normal is where the light ray of incident meets the surface at an 90° angle which is the normal line

Question 28

Snow blindness

Answer 28

Temporary partial or complete blindness caused by overexposure to the glare of sunlight

Question 29

Night blindness

Answer 29

Difficult or impossible to see in dim light

Question 30

Colour blindness

Answer 30

Only can see shades of grey and occurs in about one person in every 40000

Question 31

Astigmatism

Answer 31

Blurred fission caused by an irregularly shaped cornea

Question 32

Near-sighted vision

Answer 32

Focussing problem in which nearby objects are clear but distant objects are blurred

Question 33

Far-sighted vision

Answer 33

Focussing problem in which distant objects are clear but nearby objects are clear but nearby obj. are blurred

Question 34

Reflected telescope

Answer 34

Has concave mirror , plane mirror, and a convex lens to collect and focus light from distant objects

Question 35

Refracting telescopes

Answer 35

Convex lens to collet and focus light from a distant object, and convex eyepiece lens to magnify the image; the lenses bend the light to focus it

Question 36

Charged-culled device (CCD)

Answer 36

Electronic device that senses and absorbs light and provides electrical signals needed to produce a digital image