Energy Transformation Assessment Prep

Which of the following describes the process of changing energy from one form to another?

• transfer

• transmission

• transportation

• transformation

The law of conservation of energy states that energy can neither be created nor destroyed. According to this law which of these equations is correct?

• E=mc2

• KE = PE

• energy in = energy out

• energy in power in=

Thermal energy is the total energy of

• atoms

• flames

• molecules

• both A and C

What type of energy is caused by the movement of electromagnetic waves? *

• nuclear

• electrical

• radiant

• chemical

What energy transformations occur during photosynthesis? *

• chemical - electrical - sound

• mechanical (P) – mechanical (K)

• radiant chemical

• chemical thermal

Identify which forms of energy can be kinetic.

• mechanical

• electrical

• thermal

• sound

• nuclear

Identify which forms of energy can be potential.

• mechanical

• radiant

• thermal

• chemical

• electrical

When a hair dryer is being used, one of the energy transformations that takes place is ____.

• chemical to electrical

• electrical to chemical

• electrical to mechanical

• mechanical to electrical

In the simple act of lighting a match, chemical energy stored in the match head is transformed into heat and light. What is true about this energy transformation?

• Most of the energy is lost when the match is struck.

• New energy in the form of light and heat is created when the match is struck.

• All of the potential chemical energy is transformed into heat and light energy.*

• Some of the chemical energy is transformed into heat and light and the rest is converted into matter.

Energy appears in many forms. What form of energy is lightning?

• sound energy

• magnetic energy

• electrical energy

• mechanical energy