how do we see things? 6.2

Question 1

if light is given out by an object then it is…

Answer 1

OMITTED

Question 2

If light passes through an object it is…

Answer 2

Transmitted

Question 3

If light stays inside an object it is ….

Answer 3

ABSORBED

Question 4

how can you measure light intensity?

Answer 4

By using a light meter

Question 5

What is the unit used to measure light?

Answer 5

We use lux.

Question 6

what is the light level at midday?

Answer 6

about 20,000 LUX

Question 7

what is it called when an object does not give out light?

Answer 7

we call the object non-luminous

Question 8

how do we see things?

Answer 8

light is reflected off them and into our eyes.

Question 9

what part of the eye does what?

Answer 9

PCLRC

P-the light enters through the PUPIL
C- light focuses in da CORNEA (transparent outer layer of eye)
L- cornea is helped by LENS (small sack of jelly like material)
R- Image is formed in the back of the eye by the RETINA
C- light sensitive cells called RODS and CONES that absorb light.

Question 10

what do rods and cones do?

Answer 10

They convert the light into signals that they then send to the brain along the optic nerve.

Question 11

is Talha smart?

Answer 11

yes. absolutely. most defiantly.