Unit 3: Energy Final Exam

Front

Green plants convert light energy from the sun into _____ during photosynthesis.

Back

chemical potential energy

Front

Heat energy will normally flow from a region of _____ temperature to a region of _____ temperature.

Back

higher; lower

Front

What is thermal energy transfer by convection?

Back

The transfer of heat through the movement of fluids (liquids or gases) due to differences in temperature.

Front

A material that resists/limits the flow of heat by conduction, convection, and radiation is a(n) ____.

Back

insulator

Front

The kinetic energy of an object increases as its __________ increases.

Back

speed

Front

What is the formula for kinetic energy?

Back

KE = 1/2 mv² (where m is mass and v is velocity)

Front

What is potential energy?

Back

The energy stored in an object due to its position or arrangement.

Front

What is the difference between conduction, convection, and radiation?

Back

Conduction is heat transfer through direct contact, convection is heat transfer through fluid movement, and radiation is heat transfer through electromagnetic waves.

Front

What is the law of conservation of energy?

Back

Energy cannot be created or destroyed, only transformed from one form to another.

Front

What is an example of energy transformation in a hydroelectric power plant?

Back

Potential energy of water is converted into kinetic energy and then into electrical energy.