Energy

Question 1

when energy changes form, some energy cannot be created or destroyed

Answer 1

energy transformation

Question 2

musical instruments convert mechanical energy into vibrations in the air that can be perceived by ears

Answer 2

sound

Question 3

the closer the listener is to the source, the closer together the sound waves are

Answer 3

doppler effect

Question 4

power plants use fission energy, or energy from splitting of atoms, to power cities

stars, such as Sun, use fusion energy, or energy from combining atoms, to produce light energy and thermal energy

Answer 4

nuclear

Question 5

energy from vibrations of particles

Answer 5

thermal

Question 6

light energy and heat energy are produced when coal is burned

Answer 6

chemical

Question 7

energy related to motion or position - sum of kinetic and potential energy

Answer 7

mechanical

Question 8

powers most electrical appliances

various power plants convert other forms of energy to

Answer 8

electrical energy

Question 9

radiowaves

microwaves

infrared

Answer 9

electromagnetic