Density
Buoyancy
Heat
General Questions
Old Questions
100
mass / volume = ?
density
100
Matter that can flow is called...
fluid
100
Does warm air rise or sink?
warm air rises
100
liquids and gases are both _____
fluids
100
The basic SI unit for length is the ...
meter
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
A dead part of an animal or plant that has been preserved for a long time is called...
fossil
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
A 35,700mL Mr. Lo will displace how much water when he sinks into a pool?
35,700mL
300
When you heat up air, what happens to the volume and density?
heated air increases volume, making it less dense
300
How do you find the volume of a cube or rectangular-shaped object?
length x width x height
300
A measurement contains what 2 parts?
number and unit
400
How do you find the volume of an odd-shaped object?
Put it in a container of water such as a graduated cylinder and see how much the water rises. Measure the difference in volume.
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 variable in an experiment that doesn't change is...
the control variable
500
Compare the density of an aluminum bat to a piece of aluminum foil.
they are the same
500
When an object floats, what's greater? Gravity or the buoyant force?
Buoyant force
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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