Grade 7- Uses, Careers and Roles of Forms of energy

There are different forms of energy depending on the source they come from.

1. Wind energy from wind.

2. Solar energy from the sun.

3. Chemical energy from biomass and petroleum products.

4. Electrical energy comes from electric cells or batteries, hydropower, wind power. Solar power and geothermal.

5. Thermal or heat energy from hot objects.

6. Mechanical energy from moving objects.

Kinetic and Potential Energy.

Forms of energy used in daily activities are either kinetic or potential.

Some are potential or kinetic depending on the activity being done.

1. Mechanical energy can be either potential or kinetic.

2. Electrical energy is kinetic.

3. Heat energy can be either potential or kinetic.

4. Chemical energy is potential.

5. Wind energy is kinetic.

6. Sound energy is kinetic.

7. Light energy is kinetic.

Uses of different forms of energy.

The forms of energy are used in different sectors:

Domestic

1. For cooking needs.

2. Electricity is used for all electrical appliances.

Transportation

Diesel, petrol and jet fuel are used to run transport machines such as cars, motorcycles, lorries, aeroplanes among others.

Commercial

Electrical energy is need for office and communication equipment, appliances among other commercial activities.

Industrial

Electrical energy, biomass and diesel is also used to run industrial machines.

Careers that require the use of energy

1. Welding Welders- They use electric energy to operate machines when repairing and manufacturing metallic items such as furniture and tools

2. Electrical engineering- An electrician installs and repairs electrical installations in factories, homes and businesses.

3. Electronic engineering- An electronic technician installs and repairs electronic equipment such as radios, television sets and fridges among others.

4. Mechanical engineering- A mechanical engineer designs, develops and manufactures different mechanical devices like engines, heating and cooling systems among others

5. Power plant operation- A power plant operator conducts a wide variety of tasks such as operating folk lift, cranes and construction machines among others

6. Farming- A farmer uses energy from agricultural machinery and equipment to carry out farm activities like ploughing, spraying and harvesting among others.

7. Industrial mechanics- An industrial mechanic installs and repairs mechanical equipment in factories and other production units.

8. Office works- An office worker uses electricity energy to operate machines like computers, mobile phones, photocopiers among others.

Role of Energy

1. Carrying out tasks at home.

2. Performing transportation activities.

3. Performing commercial activities.

4. Running industrial activities.