Aardvark
Compared to water, most metals have LOW specific heat. True or False
True
What are the currents of warm and cool air in the earth’s atmosphere called?
Convection Currents
The temperature at which all particle motion stops is ______.
0 Kelvin or Absolute Zero
Every material has its own specific heat. It is easy to change the temperature of a material with a _____________.
low specific heat
Name a good thermal conductor.
Metal
Air is a good conductor of heat? True or False
False
Place your hand OVER a stove, you can feel that it is warm without touching it. This is because of __________.
Radiation
Which part of an internal combustion engine transforms thermal energy into mechanical energy?
piston
Which part of a refrigerator removes thermal energy from inside the refrigerator?
coolant vapor
Thermal energy from the sun transfers to Earth by ______.
Radiation
Which part of a refrigerator causes the coolant to change from a liquid to a gas?
Expansion Valve
What is Thermal Energy?
the sum of the kinetic energy and the potential energy of the particles that make up a material
A liquid thermometer works because liquid _______ when it is warmed.
expands
A hot iron cools down to room temperature. Why does it cool down?
Heat energy is transferred from the warm iron to the cooler room
Name a good thermal insulator.
Cloth
Water makes a good coolant because it has a _____.
high specific heat
What is the energy stored in the interactions between particles?
potential energy
What is heat?
The movement of thermal energy from a warmer object to a cooler object.
A temperature change in a substance always indicates that the ______ energy of the particles has changed.
kinetic
Name a heating appliance.
Curling iron, clothes iron, hair straightener
What is specific heat?
The amount of thermal energy required to heat 1 kg of material by 1 deg C.
What is the average kinetic energy of the particles that make up a material?
Temperature
You reach for a bottle of water out of the refrigerator, why does your hand get cold?
conduction
The transfer of thermal energy between materials because of collisions between the particles
conduction
What percent of the chemical energy in gasoline is converted to mechanical energy in the average vehicle.
20%