Magnets and magnetic fieldsIB MYP Sciences: Flashcards

What these 14 flashcards ask

What happens when two like poles are brought together?
What happens when two unlike poles are brought together?
Name three magnetic materials.
Name two non-magnetic metals.
What is a magnetic field?
In which direction do magnetic field lines point outside a magnet?
Where is a magnetic field strongest?
Can magnetic field lines cross?
What is induced magnetism?
Which pole forms at the end of an iron nail nearest a magnet's north pole?
Why does a compass needle point north?
How does the Earth's magnetic pole in the Arctic behave?
Why is iron used for a temporary magnet?
What does a plotting compass show?

Exam questions on Magnets and magnetic fields

A student in Johannesburg tests four objects with a bar magnet: an iron nail, a copper coin, a steel paper clip and a plastic ruler.
Explain why the iron nail is attracted to the magnet but the copper coin is not.2 marks
A compass contains a small magnetised needle that is free to turn. A hiker in Switzerland uses one to find north on a mountain path, and a science class uses one to investigate the field around a bar magnet.
Describe how the class could use a compass to plot the magnetic field line around a bar magnet.2 marks
A technician at a recycling centre in Singapore separates mixed metal waste with a large magnet. Back in the school laboratory, a science class uses small bar magnets and iron nails to model the same effect.
Explain how the magnet separates iron and steel scrap from aluminium, copper and plastic.3 marks

Written by the Exaim team, led by Shaun Daswani (Head of Upper Secondary, Improve ME Institute; MSc Financial Mathematics, Imperial College London; BSc, UCL) and Jason Daswani (operational lead, Improve ME Institute; LSE).