Thermal Energy Transfer

Thermal Energy Transfer

Thermal Energy

The total kinetic (motion) energy of the tiny particles that make up matter; the faster the particles move, the warmer the matter becomes

Kinetic Energy

Energy of motion

Multiple Choice

An object whose particles are moving really slowly would be very...

• hot

• cold

• excited

• frozen

Heat Transfer

The thermal energy exchange between two objects of different temperatures; energy moves in a predictable pattern from warmer sites to cooler sites until all sites have reached the same temperature

Temperature

Average kinetic energy of all the particles in a material; measured by a thermometer in degrees (usually degrees Celsius or degrees Fahrenheit)

Open Ended

How are kinetic energy and temperature related to each other?

Open Ended

If you grab a metal handrail that is very cold, heat moves from ________ to _______

Conduction

Transfer of thermal energy that occurs in solids, liquids, and gases when two substances of different temperatures touch.

Convection

Heat transfer caused by the rising of hotter, less dense fluids and the falling of cooler, more dense fluids.

Radiation

The transfer of energy by the movement of electromagnetic waves or subatomic particles.

Open Ended

Choose either conduction, convection, or radiation, and give a real world example.

Matter

Anything that has volume and mass

States of Matter

Distinct forms of matter known in everyday experience: solid, liquid, and gas; also referred to as phases

Multiple Choice

Which state of matter is steam?

• solid

• liquid

• gas

• plasma

Energy

The ability of a system to do work; required for changes to happen within a system

Conductor

A substance that allows the flow of electrical charge or transfers thermal energy through matter.

Insulator

A material that does not conduct heat or electric current

Multiple Choice

If you are trying to keep your house warm in the winter, which do you want to use?

• conductor

• insulator

• solids

• gases

System

A group of interacting, interrelated, or interdependent elements forming a complex whole