题目内容

As the gas in a rigid container is heated, its

A. Pressure increases
B. Pressure decreases
C. Temperature decreases
D. None of the above

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Which object will sink in a bowl of water?

A. a pencil
B. a metal spoon
C. a plastic spoon
D. None of the above

Equal size balls of cork, lead, aluminum and steel are placed in water. Which one will float?

A. Lead
B. Cork
C. Aluminum
D. Steel

Which property of a liquid describes its resistance to flow?

A. Plasticity
B. Viscosity
C. Elasticity
D. Incompressibility

If an item floats on water it has ------------------- density than water.

A. Higher
B. Lower
C. The Same
D. None of the above

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