Convection, Convection, Convection,
Warm air/water always
Rises
Which is denser? Cold air or warm air?
Cold air
Convection currents in Earth's Mantle power plate tectonics
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Wind
Air in Motion -Caused by the uneven heating of Earth's atmosphere
What does convection occur in?
Air,gases,liquids
Why is the air by the ceiling warmest
Because warm air rises and is light.
How can a glass of water reach thermal equilibrium?
By stirring a glass of water until the glass is equally heated
Cold air is more dense
Cold air sinks
Explain the cycle of convection
Cold air sinks pushing warm air up. Warm air soon cools pushing what was once cold air and now is warm air up.
At the eqautor
Colder warms and rises towards the surface of the ocean. That water is replaced by cold water, which eventually warms up and rises. Repeat J
Heat transfer through liquids, air, or a solid rock is known as
Convection
What force could be strong to move an entire tectonic plate?
Convection of course/ Convection currents in Earth's mantle move tectonic plates around, causing CONTINENTAL DRIFT
Convection
Heat transferred through liquids and gases, causing them to move. Air/water heats up and rises, and cold air/water rushes in and takes its place. Cold air/water then heats up and rises, and more cold air/water rushes in and takes its place. This process forms moving currents of air/water, called Convection Currents.
The Great Conveyor Belt
Is a complex system of ocean currents powered by convection. It influences climate all over the planet.
Warm air rises because
It is light and pushed up by cold air
What is thermal equilibrium?
It is when a a liquid is equally heated.
Sea Breeze
Moves From **Sea** to Land
Land Breeze
Moves form **Land** to sea
The gulf stream and VA
Ocean currents traveling away from the equator are warm water currents. The Gulf Stream is an ocean current that carries warm water from the southern tip of Florida along the eastern coast of the United States.
Cold air/water always
Sinks
How do you think convection applys to air conditioners being on ceilings?
So the cold air flows to the room sinking to the ground creating a convection current
Convection powers extreme weather
Strong convection cycles cause thunderstorms, tornadoes, and hurricanes
Hot gases and liquids are less dense so they float upward when surrounded by gases and liquids of medium temperature
That's how hot air balloons float : the hot air in them is less dense than the air around them
Density
The ammount of matter packed together in a given space
Convection is
The cycle of cool air and warm air rising and sinking
A convection current is
The flow of hot and cold regions through a fluid.
Heated molecules move around so much that they sometimes jump right out of their container.
Therefore , the hot fluid becomes less dense or "lighter"
Chilled molecules move less and don't take up as much space .
Therefore, the material they are in becomes more dense or heavier
How do thunderstorms form ?
They form when the water from the ground comes up into the air and form cumulus clouds . Then the cumulus clouds with hold lots of moisture and even electricity
How is thermal energy transferred through liquids and gases ?
Through convection ,it moves from high thermal energy to areas of low thermal energy
When water particles heat up they
Vibrate faster and faster.
At the poles
Water cools down and sinks towards the ocean floor. That water is replaced by warmer water, which then cools and sinks. Repeat :)
Convection At Equator And Poles
Water heats up at the equator and rises to the Poles. At the Poles, water cools down and sinks back to the Equator. Repeat :)
How might convection happen in a pot of boiling water?
Water that is heated rises and cold water sits at bottom waiting to be heated.
How are liquids and gases affected by heat ?
When heat energy is added to liquids and gases , the particles begin to move quickly .
In a convection
ahot, less dense fluid rises up, and a cold, more dense fluid sinks, forming a convection cell.
Convection currents
cause wind
3 ways heat energy is transferred
conduction, convection ,radiation
Cold Water
cools the air above it so land areas near cool water currents have cool temperatures.
Occurs when ?
heat is circulated in liquids
Radiation
heat traveling through empty space
Convection
how heat is transferred between fluids (liquids and gases )
Convection currents
in your vegetable soup
Convection
is a process by which heat is transferred by movement of a heated fluid ( a liquid or gas)
Heat
is energy that flows from one object to another
Action
movement; something that happens
Atom
smallest unit of an element
Energy
the ability to do work or cause change between forms
Example of convection
the air around us
What happens when two objects are placed together ?
the object with higher temperature cools while the cooler object becomes warmer until they both reach the same temperature
Energy transfer
the transfer of energy from one organism to another or object to object
Conduction
thermal energy transferred from one object to the next or from molecule to molecules ;direct contact
Boil
to change from a state of liquids to a sate of gases because of heat energy
Distribute
to hand out or spread evenly
absorb
to take in matter of an object
Warm Water
warms the air above it so land areas near warm water currents have warm temperatures.
Example of convection
water boiling on the stove
Thermal equilibrium
when substances are at thermal equilibrium means they have reached the same temperature
Cold air sinks because
It is denser.
Can convection happen in water?
Yes
Does convection occur in air?
Yes
Does convection happen everywhere?
Yes it even occurs inside and out side.
Is convection useful.
Yes it provides us with cool bair