1.Which of the following materials will allow light to pass through?
A.wax paper
B.cardboard
C.black art paper
D.plastic cover
2.What happens when light strikes a transparent surface,such as window glass or plastic wrap?
A.the light will bend
B.the light will bounce back
C.the light will be absorbed and heated
D.the light can pass through or be transmitted
3.A cardboard does not allow light to pass through.What kind of material is it?
A.paper material
B.transparent material
C.translucent material
D.opaque material
4.When does reflection happen?
A.when light curves in a circular path
B.when light bounces off a shiny,smooth surface
C.when light spreads out as it passes through a gap
D.when light bends as it moves through different materials
5.What happens to light when is strikes translucent materials?
A.the light is blocked
B.the light is absorbed
C.the light passes through
D.the light is both transmitted and absorbed
6.Why do most people in tropical countries use white paint for their homes?
A.to share their house
B.to absorb heat
C.to make feel comfortable and relaxing
D.to beautify the house
7.When a straw is dipped in a glass of water it appears bent,what do you call that interaction with light?
A.absorption
B.tramsmission
C.refraction
D.reflection
8.Whick is NOT an example of opaque material?
A.cabinet
B.windowpanes
C.brown envelope
D.mirror
9.Which is considered an unpleasant sound?
A.choir singing in church
B.metal rock music
C.classical music
D.love songs
10.What is the primary sources of visible light?
A.sun
B.flashlight
C.bulb
D.fire
1.A
2.B
3.A
4.C
5.A
6.D
7.A
8.B
9.A
10.C
