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Science•JHS Forces & Energy

Energy and its transformations

Junior High 6 questions
AI-drafted from platform data — specialist review scheduledBy DigiTransact Mastermind editorial teamLast updated
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What energy and its transformations means

You learn how different forms of energy are linked and how one can change into another. This helps you explain everyday events such as a torch lighting up, food giving the body power, or water at a dam producing electricity.

What you will practise

  • Identify forms of energy in everyday objects and situations
  • Match an energy source to the form it changes into
  • Explain simple energy changes in torches, food and dams
  • Choose the correct energy form from short questions

Before you start

You should already know that energy is needed for work to be done. It also helps to recognise common objects such as batteries, food and moving water.

Not confident yet? Work through Basic electricity first.

Worked example

One question from this skill's own question bank, shown with its full working.

Question

A torch (flashlight) changes chemical energy into…

  • sound and heat
  • light and heat
  • kinetic energy only
  • nuclear energy
Answer: light and heat

Working: The battery’s chemical energy becomes electrical, then light and heat in the bulb.

Common mistakes to avoid

  • Mixing up the source of energy with the form produced. Check both stages carefully.
  • Forgetting that a battery stores chemical energy before a torch gives light. Think of the change step by step.
  • Calling moving water electricity. Moving water first provides energy that can be used to generate electricity.
  • Naming only one output from a torch. Remember that some energy also becomes heat.

Curriculum and exam alignment

Ghana GES Basic 7 to 9 syllabusBECE

This topic usually appears in Junior High School science when learners study forces, energy and related changes in everyday life. It supports BECE-style questions that ask you to name the correct form of energy or the product of an energy change.

Curriculum notes are a general guide to where this work normally sits. Always check the syllabus your school or examination body is currently using.

Related skills

Other JHS Forces & Energy skills in Science, at the same point in the course.

Other Science topics

SHS SciencesUniversity ScienceBiologyChemistryPhysicsEarth & Space

Related study guides

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Exams that assess energy and its transformations

Junior High work on this skill feeds directly into these exam papers. Each page lists the Science topics that appear on it.

BECEBECE practice questionsFree BECE practice across the subjects at this stage, with worked answers.GESGES practice questionsFree GES practice across the subjects at this stage, with worked answers.

How this page was produced

This text was drafted with AI assistance from the questions and topics already stored on the platform. A subject-specialist review is scheduled but has not yet been recorded, so we do not claim it here.

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6 questions with a worked answer after every attempt, and a SmartScore that tracks how close you are to mastery.

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