3. Which of the following is the visite not coming from the sun and may caus
skin cancer?
A infrared
B microwave
cutra violet
4.What kind of light is emitted by mobile phones?
A microwave
B. radio
C television
5.Which color of shirt is best worn during summer?
A blue
C maroor
6. Which is an example of an opaque material?
A. mirror door
C. white curtain
B. clear plastic
D. frosted windows
7. How much light is transmitted through a frosted window?
A. all
B. none
C. some
D. twice
B. gray
8. What happens to light as it hits a shiny surface? It_.
A reflects
B. refracts
C. transmits
D. is absorbed
9. What happens to light as it moves from air to water? It_.
A moves faster
C. gets stuck in the water
B. moves slower
D. stops as it reaches the water
10. Why should the roof of houses be painted with light colors? To_.
A minimize heat absorption
C. minimize reflection of heat
B. maximize heat absorption
D. maximize reflection of heat​