Year 7 Energy Worksheet - Beginner

Year 7 Energy worksheet for Year 7 (Key Stage 3 / Year 7-9 (Ages 11-14)). Beginner level science practice, aligned to the UK National Curriculum. Print-ready with answer key included.

Science•Key Stage 3 / Year 7-9 (Ages 11-14)•Energybeginner

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Energy in Action

Year 7 Science • Ages 11–12 • Beginner

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Instructions: Work through the activities in order. Use the examples and data provided, and show your working for calculations. Remember: energy is transferred between stores and does not disappear.

Energy Stores and Transfers

Choose the best energy store or transfer pathway for each situation. Use the word bank; some words may be used more than once. Think about where the energy starts and what happens to it.

Word bank: chemical store, kinetic store, thermal store, gravitational potential store, electrically, mechanically, by heating, by radiation

1. A battery powers a torch. Energy leaves the battery’s chemical store and is transferred __________ to the lamp.

2. A cyclist pedals and speeds up. Energy is transferred mechanically to the cyclist’s __________ store.

3. A hot mug warms a cool desk by contact. Energy is transferred __________.

4. A book is lifted onto a high shelf. Energy is stored in the book’s __________ store.

5. Sunlight warms your face. Energy is transferred from the Sun __________.

Conservation of Energy

Energy is conserved: it is transferred between stores, not created or destroyed. Complete each statement using the context, then answer the final question. For the example, 100 J of energy is transferred from a battery; 70 J reaches a motor’s useful movement store and 30 J warms the surroundings.

1. In the example, how much energy is transferred to the surroundings?

2. How much energy is transferred in total from the battery?

3. A ball rolls to a stop on the floor. Its kinetic store decreases; energy is mainly transferred to the thermal stores of the ball and __________.

4. A lamp transfers 40 J from its electrical store: 8 J becomes light energy and the rest warms the surroundings. How much energy warms the surroundings?

Renewable or Non-renewable?

Classify each resource as renewable or non-renewable. Renewable resources are replenished naturally on a human timescale; non-renewable resources are finite. Write one category for each resource.

1. Wind

2. Coal

3. Sunlight

4. Natural gas

5. Hydroelectric power from flowing water

Power, Energy and Appliance Cost

Power tells us how quickly an appliance transfers energy. Use energy (kWh) = power (kW) × time (h), then cost = energy (kWh) × price per kWh. Example: a 1 kW heater used for 2 hours transfers 2 kWh. Electricity costs 30p per kWh in these questions.

1. A 2 kW kettle is used for 0.5 hours. How much energy does it use in kWh?

2. A 1.5 kW heater runs for 2 hours. Calculate its energy use in kWh.

3. A 0.1 kW lamp is on for 5 hours. Calculate the energy it uses in kWh.

4. The lamp in Question 3 uses 0.5 kWh. At 30p per kWh, what does this use cost?

Heating and Thermal Energy Transfer

Read the short descriptions and name the main method of thermal energy transfer: conduction, convection or radiation. Conduction transfers energy through particles in direct contact; convection happens as warmer fluids move; radiation can travel through space.

1. A metal spoon becomes warm where it rests in hot soup.

2. Warm air rises above a radiator and cooler air moves in to replace it.

3. Energy from a campfire warms your hands across a gap.

4. A saucepan’s metal base transfers energy from the hob to the water touching it.

Energy Choices: Read and Respond

Use the information in the table to answer the questions. A renewable resource is replenished naturally; a non-renewable resource is finite. Give a brief reason where requested.