science 8 chapter 2 section 1

Question 1

light passing into a new medium will

Answer 1

refract
change speed
change direction

Question 2

air is_______ then water

Answer 2

lighter

Question 3

water is______ then air

Answer 3

denser

Question 4

if light enters a denser medium it will…. 2 answers

Answer 4

slow down
bend towards normal

Question 5

if light enters a less dense medium it will….. 2 answers

Answer 5

speed up
bends away from the normal

Question 6

in order to provide a clear reflection the surface of an object must be….

Answer 6

smooth

Question 7

white paper does not provide a clear reflection because its…..

Answer 7

scratchy

Question 8

the incoming ray of a reflection diagram is….

Answer 8

the incident ray

Question 9

the ray after the incoming ray is called the….

Answer 9

reflected ray

Question 10

what is the place where the incident ray hits…

Answer 10

the normal

Question 11

which lens has a focal point concave or convex….

Answer 11

convex

Question 12

what are three uses for a concave mirrror

Answer 12

spotlights flashlightd and lighthouses

Question 13

what are two uses for a convex mirror

Answer 13

security mirrors and traffic mirrors

Question 14

Skip

Answer 14

Skip

Question 15

a transparent material______ light watves

Answer 15

transmits

Question 16

a translucent matreial____ light waves

Answer 16

scatters

Question 17

a opaque material_____ light waves

Answer 17

blocks