题目内容

The air inside a ball causes a pressure against the inside walls.

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As the gas in a rigid container is heated, its

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

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