Transformation of Energy Practice exercise 1

The diagram below shows a charcoal jiko used for cooking in a Kenyan home. Identify the form of energy produced when the charcoal burns. (1 mark)

The diagram below shows a charcoal jiko used for cooking in a Kenyan home. Identify the form of energy produced when the charcoal burns. (1 mark)

The diagram below shows a charcoal jiko used for cooking in a Kenyan home. Identify the form of energy produced when the charcoal burns. (1 mark)

The diagram below shows a charcoal jiko used for cooking in a Kenyan home. Identify the form of energy produced when the charcoal burns. (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)

Name one source of renewable energy commonly used in Kenyan homes.  (1 mark)

Name one source of renewable energy commonly used in Kenyan homes.  (1 mark)

Name one source of renewable energy commonly used in Kenyan homes.  (1 mark)

Explain how speed limits help reduce road accidents during kinetic energy transformation.  (1 mark)

Explain how speed limits help reduce road accidents during kinetic energy transformation.  (1 mark)

Explain how speed limits help reduce road accidents during kinetic energy transformation.  (1 mark)

Look at the image below showing traffic congestion in Nairobi. How do traffic management systems reduce accidents in such situations?  (1 mark)

Look at the image below showing traffic congestion in Nairobi. How do traffic management systems reduce accidents in such situations?  (1 mark)

Look at the image below showing traffic congestion in Nairobi. How do traffic management systems reduce accidents in such situations?  (1 mark)

Give one reason why petrol is a non-renewable source of energy.  (1 mark)

Give one reason why petrol is a non-renewable source of energy.  (1 mark)

Give one reason why petrol is a non-renewable source of energy.  (1 mark)

What is chemical energy and give two common sources of it in daily life. (2 marks)

State one difference and one similarity between chemical energy and electrical energy. (2 marks)

Name one renewable energy source that uses moving air to produce electricity. (1 mark)

Name one renewable energy source that uses moving air to produce electricity. (1 mark)

Name one renewable energy source that uses moving air to produce electricity. (1 mark)

Describe the process by which a dry cell produces electrical energy to light a bulb when used in a torch. Include what happens inside the cell. (2 marks)

Give one reason why schools should conduct fire escape drills regularly.  (1 mark)

Give one reason why schools should conduct fire escape drills regularly.  (1 mark)

Compare gravitational energy and kinetic energy, giving one example of each from the Kenyan environment. (3 marks)

What is one reason why regular eye check-ups are important when using devices that emit light?  (1 mark)

What is one reason why regular eye check-ups are important when using devices that emit light?  (1 mark)

What is one reason why regular eye check-ups are important when using devices that emit light?  (1 mark)

Name the renewable energy source obtained from steam coming out of the ground in areas like Olkaria.  (1 mark)

Name the renewable energy source obtained from steam coming out of the ground in areas like Olkaria.  (1 mark)

Name the renewable energy source obtained from steam coming out of the ground in areas like Olkaria.  (1 mark)

 In a simple circuit with a battery, switch, and bulb, what happens to the bulb when the switch is closed? (1 mark)

Study the diagram of a hand crank generator below and answer the question that follows. What happens when the crank handle is turned? (1 mark)

Explain what light energy is and give one natural source and one artificial source of light energy. (2 marks)