Thermal Energy 1
Thermal Energy 2
Thermal Energy 3
Thermal Energy 4
Thermal Energy 5
Ideal Gas Laws
200
Which type of heat transfer happens when you burn your hand on the stove?
conduction
200
The movement of thermal energy from a warmer object to a cooler object is called?
Heat
200
The average kinetic energy of the particles that make up a material.
temperature
200
Material through which heat flows easily?
conductors
200
Which type of heat transfer happens when you get a sunburn during a baseball game?
Radiation
200
True or false: A gas has more thermal energy than a solid of the same volume.
True
400
Boiling water is what type of heat transfer?
Convection
400
Transfer of thermal energy between materials by direct collision of particles.
Conduction
400
What happens to the size of most materials when heated up? Why?
They expand and temperature goes up. This is because of thermal expansion.
400
Radiation is...
heat transfer through electromagnetic waves
400
If temperature increases, what happens to thermal energy?
It also increases.
400
Gases, which are a fluid, will occupy all available space. What happens to the pressure when more particles are added to the space?
The pressure will increase.
600
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
600
True or False. Heat and thermal energy are the same thing.
False
600
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 lake 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.
600
Objects that do not transfer heat easily are called?
Insulators
600
What is a measure of the total value of the kinetic and potential energy of a substance?
Thermal energy
600
How does increasing the temperature of a gas influence the pressure of the gas?
It will increase the pressure of the gas on the system which it is stored.
800
The Three ways thermal energy is transferred are...
Radiation, Conduction, Convection
800
Heat flows from
warmer to cooler temperature
800
Heat rising and cooling to form currents in a fluid is called?
convection, or a convection current
800
Fill in the blanks
a) Radiation
b) Convection
c) Conduction
800
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.
800
A syringe is filled with air. The end of the syringe is blocked so no air can enter or escape. What will happen when the plunger of the syringe is pulled?
The volume will increase and therefore the pressure will decrease.
1000
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.
1000
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.
1000
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
1000
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.
1000
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.
1000
When more gas particles are added into a closed system, the thermal energy does not change. Why not?
The average kinetic energy of the particles remains the same. The total energy of the system has not increased because their rate of motion has not been increased.