Lesson 1 of 6 · Magnetism
Experiment⭐ 30 XP⚡ Spark LabMagnetic Fields and Field Lines
Magnetism.
🎯 Your mission
Set it up. Test it. Be amazed.
⚡ The twist
Speed isn't the same as force. Don't mix them up.
Mind = Blown
🔥 A bolt of lightning is 5 times hotter than the surface of the sun.
Make a hypothesis first
Guess: where does the energy go?
What You'll Learn
A magnetic field is the region where a magnetic material feels a force. Field lines run from north pole to south outside the magnet, never cross, and are closer together where the field is stronger. Both poles attract iron; only two magnets repel.
Key Words
Tap a word to see its definition.
Materials Needed
- bar magnet
- iron filings in a shaker
- paper
- plotting compass
Safety First
- Keep iron filings in a sealed shaker and never near eyes.
- Keep magnets away from phones, cards and pacemakers.
Steps
Read the explanation above and note the two key terms before you start.
Place a bar magnet under paper and sprinkle iron filings to reveal the field. Then plot the same field with a small compass, marking arrows every centimetre, and compare the two pictures.
Record what actually happened, including anything that did not match what you expected.
Write a conclusion that answers the question this lesson opened with, and state your uncertainty.
Check Your Understanding
Question 1
1 of 2Magnetic field lines outside a magnet run from:
Where you see this in real life
You use this every time you flip a light switch, ride a bike, or kick a ball.
Stretch Challenge
Try this in real life this week.
Time how long a small ball rolls down something, then change the slope and try again.
For the dinner table
“Show me something at home that uses this kind of energy.”
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Magnetic Fields and Field Lines
Set it up. Test it. Be amazed.
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