Physics Ch 6 - 14

Which state of matter has a definite shape?

• Liquid

• Gas

• Solid

• Plasma

What did Archimedes, the Greek mathematician and engineer, discover when putting objects in water?

• The objects will always float.

• The objects will sink.

• The objects displace water.

• The objects will evaporate.

What is atmospheric pressure?

• The force exerted by the wind

• The weight of the air above us pressing down on the Earth's surface

• The pressure caused by the Earth's gravity

• The pressure exerted by the Sun's rays

Which of the following gases is the most abundant in Earth's atmosphere?

• Oxygen

• Carbon Dioxide

• Nitrogen

• Argon

According to Boyle's Law, what happens to the volume of a gas when its pressure increases (while keeping temperature and the amount of gas constant)?

• The volume increases

• The volume decreases

• The volume stays the same

• The volume fluctuates

What happens to the particles in a liquid when it is heated?

• They move farther apart and move more freely.

• They become more tightly packed.

• They slow down and stop moving.

• They freeze and become solid.

A bug walking on water is an example of?

• Gravity

• Inertia

• Surface Tension

• Buoyant Force

Pressure increases with depth. This difference in pressure gives rise to a force called _________.

• Gravitational force

• Kinetic energy

• Buoyant force

• Friction

Archimedes' Principle states _________.

• The buoyant force equals the weight of the fluid displaced by the substance.

• The density of an object equals the weight of the fluid displaced.

• All objects float in water.

• Fluids exert an equal force in all directions.

If an object’s density is less than the fluid’s density, it will:

• Sink

• Float

• Remain at rest

• Change shape