Diffusion
Heat moves from ______ to ________
Hot to cold
How is Heat different than thermal energy?
Heat is the transfer of thermal energy while thermal energy is the total potential and kinetic energy within a substance.
What has more thermal energy a 20 lbs bag of frozen peas or a glass of water?
the 20 lbs bag of frozen peas
Define Thermal Energy?
The total potential and kinetic energy of all the particles in a given object.
What temperature do particles stop moving
Absolute Zero
when a thing is warmer it is because it has a ________ concentration of temperature.
Higher
What are the three ways that Heat can be transferred?
Conduction, Convection, Radiation
What has more thermal energy a 10 oz glass of water at 50 degrees celsius or a 10 oz glass of water at 30 degrees celsius?
the 50 degree glass
Define Kinetic Energy
The Energy of Motion
What unit of temperature do scientists use?
Double if you can explain why
Kelvin
Because it is an absolute scale without any negative numbers. 0 Kelvin=absolute zero. Better exhibits the concept of heat.
When you wear a hat or other winter clothing you are __________ diffusion.
slowing
When you are cooking an egg on a electric stove what are the two places where conduction is happening?
Between the burner and the pan, and between the pan and the egg.
How will an enclosed container be affected when thermal energy is added?
pressure will increase possibly expanding the container.
Define Diffusion
Movement of particles from high concentration to low concentration.
Water has a high specific heat what does this mean about warming it up?
It takes a bunch of energy
At what point do does heat stop moving during a heat transfer?
When they both reach thermal equilibrium.
What is the only type of energy transfer that can happen in a vacuum?
Radiation
when something is the same size and particles are moving faster it has ______________
high thermal energy
Define heat
Diffusion of thermal energy from high to low concentration. Through either conduction, convection, or radiation.
A good conductor has a _________ ___________ heat
Low, specific
If Box A and box B are boxes directly touching each other and it is a closed system without loss. One is at 5 degrees and the other is at 15 degrees at what temperature will the A reach thermal equilibrium?
10 degrees
What are all the types of energy transfer in a oven?
Convection of the air in the oven heated by the coils to the rack and air. Conduction of the rack to the pan or container to the food.
Generally when something is __________ it has more thermal energy and _________ when smaller
Larger or more massive, is smaller or more diminutive.
Define Convection
Movement of heat through the air or liquid
If there are three items that are touching each other in a line. It is a closed system with no energy loss. Object A is at 100 degrees Celsius, object B is 50 degrees Celsius, and object C is 75 degrees. At what point and degrees will each of the objects stop changing temperature.
When the objects reach thermal equilibrium. Objects A, B, and C will be at 75 degrees Celsius