Introduction to Electromagnetic Waves

Intro to Electromagnetic Waves

Multiple Select

Combustion reactions...

• do not involve oxygen.

• form carbon dioxide and water.

• form new elements.

• are always obvious

Multiple Select

Energy released in a combustion reaction comes from...

• The thermal energy

• The chemical potential energy stored in the oxygen and fuel (what ever is on fire) molecules.

• The light

• heat

Multiple Choice

Which variables has the biggest influence on the Kinetic Energy of a moving object/molecule?

• Mass and velocity

• Size and speed

• Velocity and speed

• Weight and mass

Multiple Choice

Which statement is true?

• Temperature is the total amount of thermal energy in a system.

• Temperature is the measure of the average molecular kinetic energy in a system.

• Temperature and thermal energy are the same thing.

• One unit of temperature is the Joule.

Multiple Choice

Which object has more thermal energy, the iceberg or the hot coffee?

Multiple Select

What are the three ways that thermal energy is transferred (heat transfer) (check ALL that apply)

• Radiation

• Convection

• Abstruction

• Conduction

Multiple Select

Conduction involves... (check ALL that apply)

• radiation.

• objects that are not touching.

• heat transfer through the transfer of kinetic energy on a molecular level.

• transfer of energy through sound waves.