Review for Physics QZ 12.3-12.4

If you compare the __?__ on an object with its weight you can predict whether the object will sink or float.

• buoyant force

• mass

• volume

• density

Which explains why ships can be made of steel and still float?

• Archimedes' principle

• Bernoulli's principle

• Boyle's law

• Pascal's principle

__?__ states that any change in pressure applied at any point on a confined fluid is transmitted undiminished throughout the fluid.

• Pascal's principle

• Archimedes' principle

• Bernoulli's principle

• Boyle's law

Why does ice float?

• It has a higher density than water.

• It is an amorphous solid.

• It has strong cohesive properties.

• It has a lower density than water.

Which is an example of Pascal's principle?

• hydraulic brakes

• hydroplaning wheels

• a straw

• a siphon

A substance which has no regular crystal structure but does have definite volume and shape is called a(n) __?__.

• amorphous solid

• crystalline solid

• liquid

• gas

Why is it important to take thermal expansion into account when building bridges?

• Because the bridge materials could deteriorate.

• Because the bridge materials expand and contract with changes in weather.

• So the bridge materials can change states as the weather changes.

• So the bridge will not move at all.

The thermal expansion of a solid is ________ the temperature change and the original length.

• proportional to

• inversely related to

• the sum of

• always greater than

The coefficient of ________ expansion is equal to the change in volume divided by the original volume and the change in temperature.

• linear

• liquid

• thermal

• volume

Tags

NGSS.MS-PS1-4

Particles within a solid ...

• do not move.

• vibrate about fixed positions.

• move about freely.

• exchange positions easily.