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
A carrot floats in salt water but sinks in fresh water. This is because
saltwater is more dense
100
Heat always moves from...
what is hot to cold
200
If two objects have the same volume but one has a greater mass, the one with greater mass
what is more dense
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
Weather happens in the
troposphere
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
If two objects have the same mass but different volumes, the object with smaller mass
What is less dense
300
When you heat up air, what happens to the volume and density?
heated air increases volume, making it less dense
300
Alcohol is less dense than water. If you measured the mass of the same volume of alcohol and water, the alcohol would have more/less mass?
Less mass
300
The layer of atmosphere that contains the ozone
Stratosphere
400
How do you find the volume of an odd-shaped object?
What is displacement
400
What is the force opposing the buoyant force?
gravity!
400
When you cool a fluid, what happens to volumen and it's density?
cooling a fluid decreases its volumen and 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
As altitude increases, air pressure
decreases
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?
Neither they are equal = equilibrium
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 3 ways to increase density
cool it down, increase mass or decrease volume
500
A phase change that releases heat energy is considered...exothermic/endothermic
What is exothermic
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