Energy

Question 1

Energy

Answer 1

○ Energy is the ability of an object to do work
○ Can be a transform and transfer (when this happens, work is done)
○ Energy cannot be created or destroyed

Question 2

Energy forms

Answer 2

□ Mechanical energy
□ Kinetic energy
□ Thermal energy

Question 3

Energy Transfer

Answer 3

§ Energy can be transferred from one place to another
□ By the movement of the matter
□ By the wave motion between two places

Question 4

Kinetic Energy

Answer 4

□ Transfer of kinetic energy
□ Transferred from one moving object to a stationary object via work
□ E.g.
□ Golf club swung and hits stationary golf ball, some of club’s kinetic energy transfers to the ball as the club does work on the ball
® The energy in this example moves from one object to another

Question 5

Thermal Energy

Answer 5

□ Initial energy of a system due to its temperature
□ When a substance is heated, its temperature rises because the molecules it is exposed to is composed of moving faster and gain thermal energy through heat transfer
□ Temperature is a measure of how hot or cold an object is
□ Heat is used to refer to the thermal energy being transferred from a hotter system to a cooler one
□ Transfers through conduction, convection, and radiation