Lesson 1.2.4 Exploring Magnetic Fields

Lesson 1.2.4 Exploring Magnetic Fields

9/20/24

• use a pendulum to provide evidence that magnetic fields exist

• construct a model of Earth's magnetic field

Does anyone have any experience with an MRI?

It stands for magnetic resonance imaging and is a type of test a doctor can use to produce images of the inside of your body.

An MRI machine produces a magnetic field to scan your body.

​Video on p. 1 of edio lesson!

Definition: recorded observations that use numbers or measurements

Notice the word quantitative looks like the word quantity which refers to numbers

Examples: 65^o C, 55 mL, 4 N, 25 bananas

​Quantitative data

Definition: recorded observations that describe something

The observations are the qualities of an object or event.

Examples: hot or cold, color, texture

Qualitative data

Science is something we do. Scientists collect data during investigations.

​We have been using qualitative data for our investigations in this unit.

Categorize

Options (6)

green

rough

cold

29 kg

4 frogs

0.03 liters

Categorize the following types of data

Qualitative data

Quantitative data

Understanding magnetic fields

Iron filings are magnetic and can help you visualize a magnetic field.

While viewing the video, ask yourself these questions:
Where is the magnetic field the strongest?
What does the magnetic field look like?
What is going on between the poles along the magnet?

​Move the magnet horizontally and
vertically around the pendulum.
Record your observations on the bottom of page 14.

​horizontal:

​vertical:

Dropdown

The blue pole of the magnet pulled toward the ​

Select answer

pole of the ring magnet.

​Now with the ring magnet, see if you can get the magnet on the pendulum to spin.

A similar phenomenon happens when you operate an MRI. The magnetic field of the MRI produces and image by changing the orientation of the atoms in your body.

Poll

For these experiments which did you use more of?

Put an example in the chat.

• Qualitative Data

• Quantitative Data

"Knowledge comes through understanding and experience"