11. What will happen to a rock when you place it in a pail of water? *
1 point
a it will float
b. it will sink
c. it will absorb water
d. it will break into pieces
12. Why do some people use floaters in swimming pools? *
1 point
a. It keeps them sank in the water.
b. It lessens their weight.
c. It keeps them floated in the water
d. A, B, C are correct.
13. Some material floats no matter what their shape is. Which type of material had been described? *
1 point
a. plastic
b. rubber
c.Styrofoam
d. glass
14. Why do life vest keeps you afloat in the sea? *
1 point
a. because of its shape
b. because it is less dense
c. because it is filled with air
d. because it is made of rubber
15. It means to fall to the bottom of water. *
1 point
a. porous
b. sink
c. non- porous
d. float
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Answer:
11) b.
12) c.
13) a.
14) c.
15) b.