Learning Task No.5 : Choose the letter of the best answer.
1. Which of the following materials will SINK in the water?
A. big stones
B. empty bottle
C. styro cup
D. feather
2. What kind of materials enable the boats to float in water?
A. wood/bamboo that are denser than water
B. wood/bamboo that are less dense than water
C. light metal
D. plastics that are denser than water
For number 3 to 4,
3.
What properties of materials are common among coins, spoon and
iron ?
non-porous
III. porous
II. more dense than water
IV. less dense that water
A. I and II B. I and IV
C. III and II D. I only
4. Which property make these materials sink in water?
A. II
B. I and IV
C. III and II D. I only
5. Which material will most likely undergo decay?
A. aluminum
C. water
B. left over foods
D. plastic cups