Gravitational Potential Energy

Overview

This 55-minute lesson is designed for Year 10 students following the AQA GCSE Science curriculum. It focuses on the concept of gravitational potential energy (GPE) as a key part of the Energy topic. Students will engage in a scaffolded "I Do, We Do, You Do" approach, including a visually scaffolded worksheet, choral response, quick formative assessment with mini whiteboards, turn-and-talk discussions, and a practical “Stepping Up” activity. The lesson is closely aligned with the National Curriculum for England—Physics Key Stage 4 content, ensuring conceptual understanding and practical skills development.

National Curriculum Links

Physics (KS4) - Energy
Understand that energy can be stored in different ways, including gravitational potential energy (NC Programme of Study)
Quantitative understanding of energy stored in a raised object:
GPE = m × g × h
Carry out scientific enquiries, including practical work, making observations and measurements, using techniques, apparatus and equipment, and presenting data.

Learning Objectives

By the end of the lesson, students will be able to:

Recall the definition of gravitational potential energy and explain its store type.
Use and rearrange the equation GPE = m × g × h to calculate gravitational potential energy.
Apply their understanding through a practical “Stepping Up” activity to investigate how height affects GPE.
Demonstrate effective scientific communication and reasoning through collaborative discussion and written responses.

Resources Needed

Whiteboards and markers (individual)
Visualiser (for worksheet modelling)
Printed “Gravitational Potential Energy” worksheet (with Qs and graph space)
Step or platform for the practical activity
Masses or students’ bodyweight (approx. measurement)
Stopwatches or timers
Rulers or metre sticks
Data recording sheets
PowerPoint slides or board for definitions and formulae
Calculators

Lesson Breakdown

0–5 mins | Starter: Choral Recall & Quick Check

Activity: Display the term “Energy Stores” and ask students to CHORAL RESPOND definitions/examples of different types including gravitational potential energy.
Quick Check: Students write on mini whiteboards: What is the unit for gravitational potential energy? and Name the three variables in the GPE formula.
Teacher feedback: Show answers instantly, promote peer correction.

5–15 mins | I Do: Modelling with Worksheet on Visualiser

Teacher projects the worksheet via visualiser, clearly working through each question aloud.
Emphasis on:
- GPE definition: energy stored by an object because of its height.
- Equation: GPE = m × g × h with explanations of variables (m in kg, g ≈ 9.8 N/kg, h in metres).
- Conversion of units and rearranging the equation to find height or mass.
Model a sample calculation clearly, narrating problem-solving steps, e.g.: "Calculate GPE of a 50 kg student raised 1.5m."
Include prompt questions for students to answer verbally or write short answers.

15–25 mins | We Do: Guided Practice & Turn-and-Talk

Students complete 2–3 worksheet questions in pairs.
Teacher circulates supporting and asking probing questions.
Pause for “turn and talk”: Discuss how changing mass or height affects GPE. Which variable has the biggest impact and why?
Conduct a choral response quiz: Teacher reads statements ("If height doubles, GPE doubles"). Students respond with "True" or "False."

25–45 mins | You Do: Practical “Stepping Up” Investigation

Setup: Student pairs use steps/platform and measure their height from the floor.
Task: Each student steps up from floor to platform while partner measures approximate height climbed. Mass is estimated using an average or student’s known weight.
Students use GPE equation to calculate the energy gained each time they step up.
Each group records results on data sheet.
Discuss variables: What affects GPE here? Step height and mass.
Teacher guide:
- "I Do" demonstration of one calculation.
- "We Do" step through initial measurement and calculation together.
- "You Do" students repeat independently with partner.
Quick formative assessment by writing final GPE values on mini whiteboards for teacher to assess accuracy.

45–53 mins | Plenary: Conceptual Reflection & Exit Ticket

Whole class discussion: How can our understanding of GPE be applied in real life? (e.g., rollercoasters, dams, energy efficiency).
Final choral recap of GPE formula and concept.
Exit Ticket (on mini whiteboards or paper): Write one sentence explaining why gravitational potential energy depends on height.

53–55 mins | Lesson Review & Homework

Summarise what was learnt and announce homework: Complete any unfinished worksheet questions and find one example of gravitational potential energy in the home or environment. Write a short explanation.

Assessment Opportunities

Formative: Whiteboard responses, paired talk, worksheet Q&A, practical measurements and calculations.
Summative: Worksheet completion and exit tickets acting as quick checks of understanding.
Practical skills assessed: measuring height, using equipment safely, calculating energy values and interpreting results.

Differentiation & Inclusion

Support: Provide simplified worksheets or formula cards for those who need them.
Challenge: Extend learning with questions exploring energy transfers or efficiency during stepping up.
Practical adjustments: Students incapable of stepping onto steps can measure height of an object or use other means to participate evenly.

Reflection (For Teacher Use)

Did the “I Do, We Do, You Do” scaffold successfully build confidence before the practical?
Were the quick formative checks effective at real-time diagnosis of misconceptions?
How successfully did students link the conceptual understanding with the practical?
Plan to adapt the pacing or deepen questioning based on observed engagement.

This lesson actively engages students with theoretical and practical elements of gravitational potential energy fully aligned to the GCSE AQA specification and the National Curriculum. The combination of visual modelling, collaborative questioning, choral response, mini whiteboard checks, and a hands-on activity ensures an inclusive, stimulating learning experience tailored for Year 10 learners.

Teaching Instructions