Thermal Energy 1
Thermal Energy 2
Thermal Energy 3
Thermal Energy 4
Thermal Energy 5
3
Which type of heat transfer happens when you burn your hand on the stove?
conduction
3
The movement of thermal energy from a warmer object to a cooler object is called?
Heat
3
The average kinetic energy of the particles that make up a material.
temperature
3
Material through which heat flows easily?
conductors
3
Which type of heat transfer happens when you get a sunburn during a baseball game?
Radiation
5
Boiling water is what type of heat transfer?
Convection
5
Transfer of thermal energy between materials by direct collision of particles.
Conduction
5
What happens to most materials when heated up?
They expand and temperature goes up.
5
Radiation is...
heat transfer through electromagnetic waves
5
If temperature increases, what happens to thermal energy?
It also increases.
8
You are supposed to get low toward the floor if you are ever caught in a building or house fire. The hotter air and smoke will rise and the cooler air will sink. What type of heat transfer does this represent?
Convection
8
True or False. Heat and thermal energy are the same thing.
False
8
Why does a frozen lake have more thermal energy than a boiling pot of water, even though the lake has a much lower temperature?
The lanke has more particles, and if you add all their kinetic energy it is still more than the high kinetic energy particles in the boiling pot.
8
Objects that do not transfer heat easily are called?
Insulators
8
What is a measure of the total value of the kinetic energy of a substance and the potential energy.
Thermal energy
10
The Three ways thermal energy is transferred are...
Radiation, Conduction, Convection
10
Heat flows from
warmer to cooler temperature
10
Heat rising and cooling to form currents in a fluid is called?
convection, or a convection current
10
Fill in the blanks
a) Radiation
b) Convection
c) Conduction
10
Explain how baking a pizza relates to the conservation of energy
The total thermal energy remains the same. The thermal energy in the convection oven travels from hot to cold to cook the cold pizza. The pizza gains energy from the surrounding oven but the total energy remains the same.
12
Where in a room would you want to place hot air vents? Why is that?
You would want to place them towards the floor. Hot air rises, so having the air come out near the ground would be a more efficient way of spreading the heat evenly around the room.
12
Why does concrete usually get poured in slabs with spaces between each slab?
The space prevents the concrete from buckling when it expands in the summer and contracts in the winter. This is called thermal expansion.
12
What is the vocabulary word that means "the amount of heat needed to raise the temperature of a substance 1 J/kg degrees C?"
Specific heat
12
Do ice cubes cool down the water? or does the water warm them up? Explain.
The ice cubes are warmed up by the water because heat only transfers from hot to cold.
12
If two objects are at the same temperature but have different masses, will they contain the same amount of thermal energy?
NO! More matter means more molecules of kinetic energy.