1. energy Ability to do work ___________________ ___________________________ occurs when a force causes an object to move in the direction of the force _______________________________ work

2. force distance Work = ____________ x _________ When work is done _______________ is given by 1 object to another energy

3. Joule (J) Work & energy units _________________ 1 J = amount of energy to lift an apple 1 m Average serve of tennis ball = 75 J of KE Fastball pitch = 120J of KE Football pass = 150J of KE Energy of motion ___________________ kinetic energy

4. KE = mv2 2 _______________ has a greater effect on kinetic energy than _____________ KE of a snail (mass 5g) traveling at 0.014 m/s0.00000048J KE of an 18-wheel truck traveling at 26.69 m/s 2,200,000 J speed mass

5. Energy of an object due to its position or shape ______________________________ _________________potential energy (GPE) is work done on an object when opposing the force of gravity; work done on an object to lift it to a given height potential energy gravitational

6. GPE depends on ________________ & ____________ GPE = weight x height Units (N x m ) = ___________ weight height Joule (J)

7. PE of a stretched bungee or a stretched rubber band _____________________ elastic potential energy

8. Total energy of motion and position ____________________________ Can be ____, ____, or _______ ME = PE + KE Mechanical Energy PE KE both

9. Forms of energy ________________________ ________________________ ________________________ ________________________ _________________________ _________________________ thermal chemical electrical sound light nuclear

10. Thermal Total energy of particles in an object More energy if ________________________ _________________________ moving fast more particles

11. Chemical Work done to form compound is stored in chemical bonds between _________ Form of __________________energy __________ consists of chemical compounds atoms potential food

12. Electrical Energy of _________________________ Electrical energy of moving electrons is used to__________________________ Form of _____________________energy moving electrons do work kinetic

13. Sound Cause by an object’s _________________ which transmit ________________ from ______________ to ___________ Form of ___________ & _________ energy vibrations energy particle particle kinetic potential

14. Light Caused by the _____________ of electrically charged particles which transmit _____________________ vibrations energy

15. Nuclear Energy associated with changes in the _______ Produced when ____ nuclei join (ex: hydrogen in sun forms heliumcan only occur at 100,000,000 oC) Or When ____ nucleus splits (ex: PE stored in uranium) nucleus 2 1