INTERACTION OF LIGHT ON DIFFERENT MATERIALS

1.The following are examples of materials that transmit light. Which one is not useful?

• A. PICTURE FRAME

• B. windows of houses

• C. GLASS DOORS COVERED WITH DESIGN PLASTIC

• D. DISPLAY CABINET DOOR

2.Why do most people in tropical countries use white paint for their homes?

• A. TO SHADE THEIR HOUSES

• B. TO MAKE COOL AND COMFORTABLE

• C. TO ABSORB HEAT

• D. TO DECREASE TEMPERATURE

3.Why is light absorbed by the plants useful?

• A. IT MAKES THE PLANTS GREEN

• B. LIGHT IS REFLECTED AND INCREASE ITS TEMPERATURE

• C. OVER EXPOSURE TO LIGHT MAKES PLANTS DIE

• D. IT MAKES ENVIRONMENT COOL

4.Which material can be best useful when there is intense light and heat of the sun outside?

• A. RAINCOAT

• B.SANDO

• C. JACKET

• D. UMBRELLA OR CAP

5. Which of the following scenarios depicts the correct use of materials during summer?

• A. ANA USED TO WEAR SUNGLASSES WHEN WALKING UNDER THE SUN

• B. ROBERT WEARS BLACK JACKET EVERY 12 NOON

• C. ROVICK USES UMBRELLA WHEN HE WALKS UNDER THE SUN

• D. BOTH A AND C