Key Terms
Amount of space matter occupies
What is volume?
True or False:
Mass is the same thing as weight.
What is false?
(Remember: Weight changes when gravity changes. Mass is not affected by gravity.)
Standard unit of measure for mass
What is the gram (or kilogram)?
A dog's mass on earth is 20 kilograms. What will the mass on the moon be?
The dog's mass will be 20 kilograms on the moon.
(Remember - Mass doesn't change with gravity.)
A Greek mathematician that lived over 2,000 years ago and figured out a way to find the volume of an irregular shaped object.
Who is Archimedes?
Amount of matter an object contains
What is mass?
True or False:
You would weigh more on the moon than here on Earth.
What is false?
(Remember: The moon has less gravity than Earth; therefore, you would weigh less on the moon.)
Standard unit of measure for volume
What is the liter?
A cat's mass on earth is 5 kilograms. Will the cat's weight be more or less on the moon?
(Remember: Weight is affected by gravity. The moon has less gravity than Earth.)
How many millimeters are in a centimeter?
What is 10?
Measure of the force of gravity on an object
What is weight?
The density of a substance stays the same no matter what size of a sample you have.
What is true?
(Remember: The styrofoam in our slice and dice gizmo always had a density of 2 grams per cubic centimeter.)
Standard unit of measure for weight
What are Newtons?
An object with a density of 0.56 grams per cubic centimeter is placed in water. What will happen to the obejct?
What is the object will float?
The famous phrase that Archimedes is credited with shouting when he "figured out" how to find the volume of an irregular object while taking a bath.
What is "Eureka"?
Amount of Mass contained in a given Volume
What is density?
True or False:
Pure gold has a different density than Rose Gold?
What is true?
(Remember: Rose gold is made up of Gold, Silver, and Copper. Each of those materials has a different density. )
What is water displacement?
An object has a density of 8.2 grams per cubic centimeter. What will happen to the object when it is placed in water?
What is the object will sink?
Density of water
What is 1 gram per milliliter (or 1 gram per cubic centimeter)?
states that an object in water is pushed up by a force equal to the weight of the displaced water
What is Archimedes Principle?
True or False:
If an object sinks, its volume is equal to the volume of the displaced water.
What is true?
(Remember, this is one of the two consequences of Archimedes' Principle.)
Formula for finding density
What is Density = Mass divided by Volume?
When placed in water, a marble displaces 2 mL. What is the marble's volume in grams per cubic centimeter?
What is 2 grams per cubic centimeter?
If an object's density is 0.85 grams per cubic centimeter, how much of the object will float BELOW the water?
What is 85%