6. What is the density of metal spoon when its weight in air is 0.48N and in water is

0.42N?

A. 8000 kg/m3

B. 4000 kg/m3

C. 6000 kg/m3

D. 1000 kg/m3



7. If the weight of the water displaced is the same as the weight of the object placed in the

water, the object will sink.

A. This statement it true.

B. This statement is false.

C. This statement is vague.

D. This statement has no scientific basis.



8. Which of the following principle Archimedes discovered?

A. Principle of Volume

B. Principle of Density

C. Principle of Buoyancy

D. Principle of Gravity



9. Which of the following is true about buoyant force?

A. It is a downward force exerted by fluids on an object.

B. It is an upward force exerted by the center of the Earth.

C. It is a downward force exerted by the object towards the fluid.

D. It is an upward force exerted by fluids on an object.



10. How could you make plastic sink and steel float?

A. It cannot one done.

B. You remove some mass from the plastic.

C. It would be possible if the plastic have some air in it.

D. You will change the shape and therefore the surface area.

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