Heat Transfer
When you heat a pot on the stove, you are using what type of heat transfer?
conduction
Energy of motion is called
Kinetic Energy
If there is 200 J of kinetic energy and 100 J of potential energy, then what is the mechanical energy?
300 J
If copper takes more energy to heat up than steel, which has the higher specific heat?
Copper
If something is a bad conductor and creates a barrier between hot and cold objects it can be called a
insulator
Before the roller coaster moved down a big hill there are high levels of __________________ energy
potential
How high above the ground is a baseball with a mass of 0.15 kg that has a GPE of 73.5 J?
50m
What does C stand for in the specific heat equation?
specific heat capacity
If we move from solid to liquid on a heating curve energy is being absorbed or released?
absorbed
Energy stored in chemical bonds like in food molecules is called
chemical energy
What is the kinetic energy of a 4 kg bowling ball traveling at 10 m/s?
200 J
Look at the specific heat values. Which will heat up the slowest?
Brick: 0.84 J/(g*C)
Granite: 0.79 J/(g*c)
Leather: 1.5 J/(g*C)
Leather
On a cooling curve you loose or gain kinetic energy?
loose
The total amount of potential and kinetic energy is called
mechanical energy
What is the kinetic energy of a 0.25 kg baseball thrown at 50 m/s?
312.5 J
418 J
A reaction that absorbs or gains heat is called a(n)
endothermic reaction
Energy is measured in
Joules
What is the GPE of a ball with a mass of 100g and a height of 3m?
2,940 J
What is the specific heat of a metal if 0.5 kg of the metal absorb 9,000 J of heat as it warms by 10ºC.
1,800 J/(g*C)