Substrand: "7.4 Energy" (4 periods)

This sub-strand deals with energy. Energy is the ability to do work. There are different forms of energy including gravitational, elastic, electrical, heat and sound. Energy can, neither, be created nor destroyed, but can be changed from one form to another. The source of all energy is the sun. Renewable energy sources are sources that are continually replenished or restocked. These energy sources include energy from sun, water, wind, geothermal and biomass. The non-renewable energy sources cannot be
replenished, once they used up, you have to find another source somewhere else. These non-renewable
energy sources include fuel such as oil, coal and natural gas.

Learner's should:

Learner's should:

Learner's should:

7.4.1 be able to show that energy is the ability to do work (s)

7.4.1.1 demonstrate that energy is used when work is done; Example, boiling an egg, lifting a book, digging a hole

7.4.2 know that there are different forms of energy (k)

7.4.2.1 identify and describe different forms of energy; Heat, sound, elastic, electrical

7.4.3 be able to show that energy can changed from one form to another (s)

7.4.3.1 demonstrate energy transformation in the following situations; lighting a match, dropping a coconut, kicking a soccer ball, writing in the book, brushing your hair

7.4.4 know that the total amount of energy remains the same during energy transformations (k)

7.4.4.1 state the law of conservation of energy; “Energy cannot be created nor destroyed, but can be changed from one form to another”

7.4.5 appreciate the use of forms of energy in our daily lives (a)

7.4.5.1 identify the form of energy in the following activities; music from radio, stretching rubber band, boiling water, using firewood, heating water using electrical jug

7.4.6 know that energy sources can be renewable or non- renewable (k)

7.4.6.1 identify and describe the renewable and non-renewable energy sources