Electrical to Heat Energy Practice Exercise 1

Describe how a hair dryer works in terms of energy transformation. Which form of energy is used and what is it changed into? (1 mark)

A science class connects an iron rod to an electric circuit and it becomes hot. Explain what energy change takes place and why this is important in daily appliances. (1 mark)

Many urban homes in Kenya use electric stoves for cooking. Explain the form of energy used by an electric stove and what it transforms into during cooking. (1 mark)

The diagram below shows a person using an electric iron to press school uniforms. Explain the form of energy the iron uses and the energy transformation taking place. (1 mark)

The diagram below shows a person using an electric iron to press school uniforms. Explain the form of energy the iron uses and the energy transformation taking place. (1 mark)

When an electric kettle is switched on, the water inside becomes hot. Which form of energy is being used and what does it transform into? (1 mark)

A learner left an electric iron plugged in and switched on for a long time. Later, the iron became very hot. Explain what form of energy was used and what it changed into. (1 mark)

A parent in Kisii uses an electric cooker to prepare ugali for supper. Describe the type of energy the cooker uses and the form it produces. (1 mark)

A teacher used an electric kettle to boil water for tea. Explain the energy transformation that took place. (1 mark)

In a school science lesson, learners connected an iron rod to a battery and noticed it became hot. What energy was used and what form of energy was produced? (1 mark)

A diagram shows a wire being used to light charcoal. The wire becomes red and helps start the fire. Explain what form of energy changed and what was produced. (1 mark)

A diagram shows a wire being used to light charcoal. The wire becomes red and helps start the fire. Explain what form of energy changed and what was produced. (1 mark)

The diagram below shows a wire being used to light charcoal. The wire becomes red and helps start the fire. Explain what form of energy changed and what was produced. (1 mark)