Energy Efficiency

Question 1

True or False?: Energy cannot be created of destroyed, just changed in form.

Answer 1

True: Energy CANNOT be created of destroyed, just changed in form.

Question 2

True or False?: Energy transferred into unwanted forms of energy are called “used”.

Answer 2

False: Energy transferred into UNWANTED forms of energy is called “WASTED”.

Question 3

If gravitational potential energy is lost what is gained?

Answer 3

If gravitational potential energy is lost, KINETIC energy is gained.

Question 4

Energy that is not seen doing useful work, the energy is wasted. What are the two wasted/ useful energies in a cordless drill?

Answer 4

Wasted energies found in a cordless drill include heat and sound whilst kinetic (movement) energy is being accurately used.