Density
Buoyancy
Heat
General Questions
Miscellaneous
100
mass / volume = ?
density
100
Matter that can flow is called...
fluid (liquid or gas)
100
Does warm air rise or sink?
warm air rises
100
liquids and gases are both _____
fluids
100
The units that represent mass
grams
200
The amount of space something takes up is the...
volume
200
When an object is _________ dense than the fluid it is in, the object will sink.
more
200
Is warm air more or less dense than cool air
less dense
200
Density depends on which 2 factors?
mass and volume
200
the three mechanisms of heat transfer
convection, conduction and radiation
300
If I increase the volume of an object without changing the mass, what will happen to the density?
increase volume causes a decrease in density
300
How a vase with these three liquids would look if the densities were: green liquid = 0.97 g/ml pink liquid = 0.87 g/ml yellow liquid = 0.55 g/ml
Yellow Pink Green
300
When you heat up air, what happens to the volume and density?
heated air increases volume, making it less dense
300
The amount of molecular motion in an object
Heat
300
The term that signifies that different materials absorb heat energy differently
differential heating
400
the amount of matter that makes up an object
Mass
400
What is the force opposing the buoyant force?
gravity!
400
When you cool a fluid, what happens to it's density?
cooling a fluid increases its density
400
When an object sinks in water, how much water does it displace?
It displaces the same volume of water as the volume of the object.
400
The density of 250 cc of liquid that has a mass of 700 grams
2.8 g/cc
500
Compare the density of an aluminum bat to a piece of aluminum foil.
they are the same
500
If you drop a solid object that has a mass of 2.8 g/cc into a liquid that has a mass of 2.5 g.cc, what would happen?
It would sink
500
Heating a fluid makes the volume (increase/decrease), which causes density to (increase/decrease) and for the fluid to (float/sink).
heating a fluid increase volume, decreases density, and fluid will float
500
Name 2 ways to increase density
increase mass or decrease volume
500
How is radiation different from convection and conduction?
Radiation transfers heat through empty space, while convection and conduction need atoms (gas,liquid,solid) to transfer heat
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