Sci- light and sound 🤢

Question 1

what part of a camera has the same fuction as the pupil

Answer 1

diaphragm

Question 2

the unit of meaurement for the loudness of sound

Answer 2

decibel

Question 3

where does sound travel faster

Answer 3

underwater

Question 4

what are the primary colours of light

Answer 4

red green and blue

Question 5

LOOK AT EYE AND EAR diagrams

Answer 5

ado it

Question 6

is a disco ball and example of internal refelction

Answer 6

disco ball

Question 7

are more packed together fequency wave lines higher or lower in frequency

Answer 7

higher

Question 8

what colour would a red ball appear in a yellow filter

Answer 8

red

Question 9

how are red, blue and green colours placed in the primary and secondary colour diagram

Answer 9

red on top
blue on left
green on right

Question 10

what do red and blue make

Answer 10

magenta

Question 11

what do green and blue make

Answer 11

cyan

Question 12

what is the function on the iris in the eye

Answer 12

controls the amount of light entering the eye

Question 13

what is the function of the retina in the eye

Answer 13

a light sensitive layer where light is focused.

Question 14

what is a opaque object

Answer 14

objects that are not translucent, when light hits, light is reflected or absorbed

Question 15

what are the parts of a eye
(in order of diagram up to down)

Answer 15

lens
pupil
cornea
iris
retina
optic nerve

Question 16

what part of a non digital camera carries out similar functions to an iris

Answer 16

shutter

Question 17

what part of a non digital camera carries out similar functions to an retina

Answer 17

film

Question 18

state the law of reflection

Answer 18

the angle of incidence is equal to the angle of reflection (i=r)

Question 19

What are 3 differences between light and sound

Answer 19

light waves are transverse wheras sound waves are longitudinal
sound waves require particles to move whereas light does not
sound travels much slower than light

Question 20

LOOK AT convex and concave diagrams

Answer 20

ado it

Question 21

a high frequiency sound will have a

Answer 21

short wavelength

Question 22

a low frequency sound wave will have a

Answer 22

long wavelength

Question 23

what does the pupil do and what feature is it in a camera

Answer 23

The opening in which light enters the eye
aperture

Question 24

what does the cornea do and what feature is it in a camera

Answer 24

clear tissue that covers the front of the eye
shutter

Question 25

what does the lens do and what feature is it in a camera

Answer 25

focuses light on the retina
lens

Question 26

what does the optic nerve do and what feature is it in a camera

Answer 26

sends signals to the brain

Question 27

what is refraction

Answer 27

Refraction is the bending of light. It is the bending of light when it enters a medium where its speed is different.