Electric current and magnetic fields take centre stage in this Grade 7 science worksheet, connecting the movement of electric charge to the operation of an electromagnet. Students explore how a current-carrying wire creates a magnetic field, how a coil and iron core can strengthen an electromagnet, and how controlled testing helps scientists investigate magnetic strength.

The reading passage introduces the relationship between an electric circuit and the magnetic field around its wire. Students consider how a nearby compass can provide evidence of magnetism, why the magnetic fields from the turns of a wire coil combine, and how placing an iron nail inside the coil can strengthen an electromagnet. These ideas build a foundation for explaining the link between electricity and magnetism rather than simply memorizing component names.

From electromagnet design to a fair test

A key focus is scientific investigation. Students examine how to test whether the number of wire turns affects electromagnet strength while keeping other features, such as the battery, iron core and testing method, consistent. Counting identical paper clips lifted provides a measurable result for comparing designs. Repeated trials help students notice variation and use evidence to support a conclusion, while recording results in a table helps organize comparisons.

Electrical safety is part of the science, too. The resource reinforces using only a teacher-approved low-voltage battery, disconnecting it between tests, stopping if the wire or battery becomes warm, and never using a wall outlet. These instructions help students recognize that safe procedures are essential when planning an investigation.

What students practise

• Multiple-choice questions check knowledge of magnetic fields, compasses, wire coils, iron cores, circuits and controlled investigations.
• True-or-false questions address common misconceptions about magnetic fields, changing variables, repeated measurements and electrical safety.
• Short-answer responses ask students to explain evidence from a compass, justify a fair comparison and describe safe investigation practices.
• A labelled diagram, categorizing activity and short note provide additional ways to organize and communicate scientific understanding.

Included teaching resources

• Printable Grade 7 student worksheet with a reading passage and science activities.
• Separate PDF answer key for checking responses.
• Student Notes lines at the bottom of the worksheet.
• Teacher Guide included in the answer key PDF, with Learning Objectives, Teaching Tips, Discussion Questions and Common Mistakes.

Classroom uses

Use this electricity and magnetism worksheet to introduce electromagnets, reinforce concepts after a demonstration, review key ideas or prepare students for a practical investigation. Its emphasis on changing one variable, controlling other conditions and repeating measurements also supports science inquiry skills. Teachers can use the questions to check conceptual understanding before an investigation or review students' reasoning afterward.

By combining magnetic-field concepts with fair testing, measurable evidence and clear safety guidance, this resource helps students connect physical science knowledge with the decisions involved in planning a reliable experiment.