main seg

Question 1

what is energy

Answer 1

The ability to do work

Question 2

what are the different forms of energy

Answer 2

chemical, electrical, radiant, mechanical, thermal and nuclear

Question 3

what are energy chains

Answer 3

mechanical machine that guides energy flow

Question 4

what is sound energy

Answer 4

Sound is energy that we can hear. It is a type of kinetic energy that is made from the vibration of matter

Question 5

what happens to sound waves when you change the pitch

Answer 5

The higher the frequency (shorter wavelength), the higher the pitch.

Question 6

what happens to sound waves when you change the volume

Answer 6

the amplitude of the wave is increased

Question 7

what is light energy

Answer 7

Light energy is a kind of kinetic energy with the ability to make types of light visible to human eyes.

Question 8

what is the difference between reflection and refraction

Answer 8

Reflection is the bouncing back of light when it strikes a smooth surface. Refraction is the bending of light rays when it travels from one medium to another.

Question 9

what is electrical energy?

Answer 9

the flow of electrons

Question 10

what is the difference between current, voltage and resistance?

Answer 10

Voltage is the pressure that pushes current. Current is the rate at which charge is flowing. Resistance slows down and resists the flow of electrons/current