DENSITY
VOLUME
BUOYANCY
PRESSURE
PROPERTIES OF SOLIDS
100
Define “density”
Density describes how much matter (“stuff”) is packed into a specific volume of material.
100
Define “volume.”
Volume is the amount of space that a material fills up.
100
Define “buoyancy.”
Buoyancy is a measure of the upward force on an object in a fluid.
100
What is a synonym for pressure?
A push.
100
Strength describes:
the power to resist strain or stress without bending or breaking.
200
Which is more dense, metal or wood?
Metal.
200
Which unit is used to measure the volume of a solid, and which unit is used to measure the volume of a liquid?
Solids are measured in cubic centimeters (c3) and liquids are measured in milliliters.
200
An object with an average density greater than the density of water will:
Sink.
200
Describe the direction of pressure in a fluid.
Equally in all directions
200
Elasticity describes:
The ability of a material to be stretched and then return to its original shape
300
Solids with a lot of strength are usually:
More dense than solids with less strength.
300
One milliliter of a liquid is equal to how many cubic centimeters?
One milliliter is equal to one cubic centimeter.
300
An object with an average density less than the density of water will:
Float.
300
Bernoulli’s principle says that:
as the speed of a moving fluid increases, the pressure within the fluid decreases.
300
Brittleness describes:
How quickly a material will break when subjected to pressure
400
Water is an exception to the density rule, because:
The density of solid water (ice) is less than the density of liquid water.
400
What is the method for finding the volume of an irregular object, and who discovered it?
Displacement, Archimedes
400
To make a heavy material like steel float, you have to:
expand its surface area
400
One of the most important applications of Bernoulli’s principle is:
in the flight of airplanes (creating lift)
400
What is ductility?
The ability to be shaped, molded or stretched into a new shape.
500
The formula for density is:
D = m/v
500
Archimedes Principle says that:
The volume of liquid displaced when a solid is immersed in the liquid is equal to the volume of that object.
500
Boats can be made of a dense material like steel, if what force is greater than what?
if the buoyant force is greater than the force of gravity.
500
It is difficult to push a beach ball completely underwater because:
You have to apply enough pressure to overcome the buoyant force.
500
Define “crystalline,” and what is its opposite?
The molecules of a crystalline material have a regular repeating pattern; the opposite is amorphous.
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