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UWCSEA G7 Convection Flashcards | StudBud
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UWCSEA G7 Convection
UWCSEA G7 Convection
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1
What is the correct order that the events occur in
air is heated, it becomes less dense, and sinks
air is heated, it becomes more dense, and rises
air is heated, becomes less dense, and rises
air cools, becomes less dense, and rises
2
The heat source in the atmosphere is the
sun
mantle
water
wind
3
Convection can only transfer through air
True
False
4
Convection currents in the mantle are caused by differences in what?
Mass
Composition
Temperature and Density
Size
5
From the picture, which statement is most true
All are correct
cooler air is sinking
The sun is the source of heat
hot air is rising
6
Where would the water be MORE dense?
in the middle
Density is the same throughout
At the bottom
on the sides
7
Which one of these materials would convection
NOT
work with?
steel
maple syrup
water
magma
8
Convection can occur in
only liquids
only gases
all fluids
only solids
9
Convection is....
Heat or electricity is directly transmitted through a substance.
Heat is transferred by the movement of a heated fluid as air or water.
Heatwaves through space
10
Why is the air over the land rising?
it is cooler than the air around it
it is more dense than the air around it
it is not moving
it is warmer than the air around it
11
The three types of Heat Transfer are Radiation, Conduction, & Convection
True
False
12
Convection is...
heat staying in one place
heat moving in a cycle
how the Earth stays heated
heat moving in all directions
13
What Is Heat?
Thermal energy inside of something
Temputure
Hotness Measured
The movment of thermal energy from a hot to cold object.
14
what does convection mean?
transfer of thermal energy in a solid only
transfer of thermal energy in a liquid or gas
transfer of thermal energy in a gas only
transfer of thermal energy in a liquid only
15
What is Convection
Transfer of heat from the actual movement of heated matter
Transfer of energy through matter from particle to particle.
Directly transporting energy through electromagnetic waves
16
Which object has a greater density?
They have the same density
The left object
The right object
17
Why is the air over the water sinking?
it is over a divergent boundary
it is more dense than the air around it
it is less dense than the air around it
the pressure from the atmosphere pushes it
18
Which of the following is NOT a fluid
gravel
air
water
oil
19
There are _ ways that heat can travel.
3
1
2
4
20
The definition of a convection current is
Currents caused by cooled particles in the air.
Currents caused by water.
When heated particles rise and cool particles sink
Currents caused by heated particles in the ground.
21
Heat will cause fluids to become
more dense
less dense
22
How does convection heat transfer?
through global warming
Through touch
Through gasses and liquids
through rays
23
Convection transfers energy through...
gases and liquids
a solid
a vacuum (in space)
24
Convection happens in the
ocean
atomosphere
mantle
ocean, mantle, and atmosphere
25
When you heat an object the particles
Burst apart instantly
stick together and don't move
Gain energy and vibrate
Begin to radiate
26
The heat transfer method of convection requires...
a fluid (liquid or gas)
a heat source
differences in density
All of the above
27
What is a convection cell?
A circular pattern of fluids rising and sinking
Heat.
A pattern of photosynthesis.
Random cells.
28
Convection is
Heat transferred through direct contact
Heat transferred through movement
