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Thermal Energy Transfer Review
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You have 2 objects of the same mass but different amounts of thermal energy are added to each. Which one will heat up more?
he one with more thermal energy being added
You have objects with different masses and the same amounts of thermal energy are added to each. Which object will heat slower?
Object with more mass
In convection.... Warm fluids
rise
In convection.... cold fluids
sink
What is heat?
the transfer of thermal energy
Heat always moves from.......
warmer to cooler
Which of the following are minimizers: Wool, Steel, Glass, Carpet, Copper, Silicon, Plastic, Iron
Wool, glass, carpet, silicon, plastic
Which of the following are Maximizers: Wool, Steel, Glass, Carpet, Copper, Silicon, Plastic, Iron
Steel, copper, iron
The earths heats the mantle material causing it to rise, while cooler mantle material sinks. Identify and explain the heat transfer described.
Convection, the warmer mantle rises while the cooler mantle sinks
Insulator
Do NOT allow heat to transfer through touch easily; slow down thermal energy transfer; called minimizers; Examples are ceramic, glass, and rubber
Conductor
Allow heat to transfer through touch easily; called maximizers; examples are metals like copper and gold
Convection
Where the hot part of the fluid/gas rises and the cool part of the fluid/gas sinks; only happens in liquids and gasses
Radiation
Energy that travels through empty space in the form of electromagnetic waves; does not need direct contact to transfer
Define Thermal Energy
Energy from the motion of all atoms or molecules within a substance; transferred through heat from object to object
Define Conduction
When heat moves from one object to another object through direct touch
Which singular material (no outside heat sources) would keep you warmer in the winter and why? Iron or Fleece
Fleece, because it is an insulator/minimizer, slows the transfer of thermal energy away from you
Panera soup is frozen and brought to a boil when people order. The buisness notices that that the 10lb bag of carrot soup heats up slower than the 8lb bag of broccoli soup. Describe why.
The broccoli soup heats faster due to the smaller amount of mass. Less mass heats faster.
Describe the heat transfer between a warm bag of vegetables placed in a freezer.
Ther warmer bag of vegetables will transfer thermal energy into the cooler freezer.
Mr. McCammon is making tacos for dinner. He placed a pan on the stove and watched as the bottom of the pan became red hot. What type of thermal energy transfer occured between the pan and the stove and describe how the energy transfered.
Conduction, the thermal energy transfered from the warmer stove to the cooler pan.
What are maximizers?
Materials that allow transfer of thermal energy faster
What are minimizers?
Materials that slow down thermal energy transfer
A pressure pipe bursts and steam escapes and quickly fills the ceiling of a room, what kind of heat transfer is occuring?
Convection
Beams of sunlight travel through space and warm the atmosphere, what kind of heat transfer is occuring?
Radiation
You touch hot cocoa to your tongue, what kind of heat transfer is occuring?
Conduction
If you are trying to rapidly melt chocolate which of the following would melt faster and why? 50 oz of Chocolate or 100 oz of Chocolate
50 oz, the smaller amount of matter means the temperature will heat up faster
Name two forms of thermal energy transfer between a high temperature room and a glass of water with ice in it.
Mr. McCammon wants to prank his wife. He asks his students what kind of bowl they should place their ice cream in to have it melt fast. What material would you recommend he use to melt the ice cream quickly?
Maximizer, Metal, Conductor
Energy that travels through empty space in the form of electromagnetic waves
Radiation
Where the hot part of the fluid/gas rises and the cool part of the fluid/gas sinks
Convection
When heat moves from one object to another object through direct touch
Conduction
Which of the following are also considered as insulators: Iron Copper Metal Minimizer Maximizer Plastic
Minimizer and Plastic


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