Magnetism Notes

Magnetic Fields
Lesson 1.2.2
9/18/24

​Page 13

• construct a model of a magnetic field

• interpret field lines in magnetic field models

• ​compass

• two bar magnets

• one ring magnet

• pendulum base

• pendulum arm

• pendulum string

• box of iron filings

​​Materials

​Check your materials!

Match

Match the words to their pictures.

• compass

pendulum

magnet

compass

Earth's Core

electromagnet

• pendulum

• magnet

• compass

• Earth's Core

• electromagnet

1. Fit the bottom of the pendulum arm into the slot in the base.

2. Use the small ring to hang the pendulum string from the arm.

3. Place one bar magnet on either side of the large ring with opposite poles facing each other.

​Follow these steps

Let's Buile a Magnetic Pendulum

​Wait for it to stop spinning and swinging before moving on the the exploration!

After the pendulum stops moving, observe the orientation of the bar magnet.

Note the direction the poles point.

Record your observation in Magnetic Fields Notes.

Then, move the pendulum to a different location in your home and record its orientation again. Note whether the direction the poles point changes. Repeat until you have taken observations in four locations. Try placing the pendulum in different rooms and near different objects.

Open Ended

Why do you think the position of the pendulum may have changed in different locations as you complete today's lesson?

magnetic fields

All magnets produce a magnetic field. A magnetic field is the area surrounding an object where you can detect magnetic force. Scientists create models of magnetic fields by drawing field lines.

​Magnetic field lines always loop back to the south pole of the magnet.

Earth also has a magnetic field

Labelling

Match the label to the hotspot.

Drag labels to their correct position on the image

magnetic field

magnetic field axis

axis of rotation

Poll

A compass shows the direction of magnetic north, which is slightly different from the geographic North Pole.

• true

• false

Draw

Earth's magnetic field allows you to navigate using a compass. What other major benefit does Earth's magnetic field provide?

Circle the answer that is correct.

Match

Match them up!

• N & N or

  S & S

• N & S

• I can detect Earth's magnetic fields

• magnets attract to...

• magnets are not attracted to

They will repel

They will attract

compass

some metals

plastic, wood, and fabrics

• They will repel

• They will attract

• compass

• some metals

• plastic, wood, and fabrics

We will now follow along in Edio

​Turn to page 6 in your lesson for today.