Electrical to Heat Energy Practice exercise 2

A hair salon in Eldoret uses several electric devices daily, including dryers and straighteners. Which device below primarily transforms electrical energy into heat energy?

A hair salon in Eldoret uses several electric devices daily, including dryers and straighteners. Which device below primarily transforms electrical energy into heat energy? (1 mark)

A hair salon in Eldoret uses several electric devices daily, including dryers and straighteners. Which device below primarily transforms electrical energy into heat energy? (1 mark)

A diagram shows a machine in Kisumu heating clay bricks using an electric unit. What form of energy is used to heat the bricks?

A machine in Kisumu heats up clay bricks using an electric unit. What form of energy is used to heat the bricks? (1 mark)

A machine in Kisumu heats up clay bricks using an electric unit. What form of energy is used to heat the bricks? (1 mark)

A school uses a large electric soup warmer to keep porridge hot. What energy transformation takes place?

A school uses a large electric soup warmer to keep porridge hot. What energy transformation takes place? (1 mark)

A school uses a large electric soup warmer to keep porridge hot. What energy transformation takes place? (1 mark)

A school uses a large electric soup warmer to keep porridge hot. What energy transformation takes place? (1 mark)

A student in Wajir uses a solar-powered iron to press their school uniform. Which form of energy is finally used on the clothes?

A student in Wajir uses a solar-powered iron to press their clothes as shown below. Which form of energy is finally used on the clothes? (1 mark)

A student in Wajir uses a solar-powered iron to press their clothes as shown below. Which form of energy is finally used on the clothes? (1 mark)

Beekeepers in Kitui use an electric wax melter to extract beeswax. What form of energy is produced by the machine?

Beekeepers in Kitui use an electric wax melter to extract beeswax. What form of energy is produced by the machine? (1 mark)

Beekeepers in Kitui use an electric wax melter to extract beeswax. What form of energy is produced by the machine? (1 mark)

During a science fair in Nyeri, students compared how fast different cooking appliances heated 1 litre of water. The electric coil stove took longer than the electric kettle. Why is the kettle more efficient?

During a science fair in Nyeri, students compared how fast different cooking appliances heated 1 litre of water. The electric coil stove took longer than the electric kettle. Why is the kettle more efficient? (1 mark)

During a science fair in Nyeri, students compared how fast different cooking appliances heated 1 litre of water. The electric coil stove took longer than the electric kettle. Why is the kettle more efficient? (1 mark)

During a science fair in Nyeri, students compared how fast different cooking appliances heated 1 litre of water. The electric coil stove took longer than the electric kettle. Why is the kettle more efficient? (1 mark)

Farmers sometimes use electric dehorners on calves. What energy transformation takes place?

Farmers sometimes use electric dehorners on calves. What energy transformation takes place? (1 mark)

Farmers sometimes use electric dehorners on calves. What energy transformation takes place? (1 mark)

Farmers sometimes use electric dehorners on calves. What energy transformation takes place? (1 mark)

Farmers sometimes use electric dehorners on calves. What energy transformation takes place? (1 mark)

In a science lesson, learners observe how an electric iron works. The teacher asks them to identify the energy transformation involved. What should the students conclude?

In a science lesson, learners observe how an electric iron works. The teacher asks them to identify the energy transformation involved. What should the students conclude? (1 mark)

In a science lesson, learners observe how an electric iron works. The teacher asks them to identify the energy transformation involved. What should the students conclude? (1 mark)

Use the diagram of a simple electric water heater with a labeled heating element X. What energy transformation occurs in the heating element marked X?

Use the diagram of a simple electric water heater with a labeled heating element X. What energy transformation occurs in the heating element marked X? (1 mark)

Use the diagram below of a simple electric water heater with a labeled heating element X. What energy transformation occurs in the heating element marked X? (1 mark)

Use the diagram below of a simple electric water heater with a labeled heating element X. What energy transformation occurs in the heating element marked X? (1 mark)

Mama Achieng uses an electric kettle to boil water every morning. One day, she notices that despite switching it on, the water does not heat up. Which of the following best explains the failure in energy transformation?

Mama Achieng uses an electric kettle to boil water every morning. One day, she notices that despite switching it on, the water does not heat up. Which of the following best explains the failure in energy transformation? (1 mark)

Mama Achieng uses an electric kettle to boil water every morning. One day, she notices that despite switching it on, the water does not heat up. Which of the following best explains the failure in energy transformation? (1 mark)

Mama Achieng uses an electric kettle to boil water every morning. One day, she notices that despite switching it on, the water does not heat up. Which of the following best explains the failure in energy transformation? (1 mark)