"Be a Compass" magnet PPT courseware

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"Be a Compass" magnet PPT courseware

1. Round magnets generally do not have magnetic poles marked on them. If the right side of it is attracted to the N pole of the magnet bar, which pole is the right side of the circular magnet?

⒉Place the tip of the magnet rod close to the stationary north needle, and the pointer will turn as shown in the picture below. Which pole is the end of the magnet rod?

How to make a magnetic needle

Rub the poles of the magnet on the steel needle in one direction

Repeat 20 to 30 times

Be careful not to prick your hand with the steel needle

Make a magnetic needle

1. Use a magnet to rub the steel needle in one direction 20-30 times

2. Check whether the steel needle becomes a magnet and how many pins it can attract.

3. Use your own method to determine the North and South Pole

4. Use your own method to mark the North and South Pole

Have you learned it?

1. When making a magnetic needle, we need to rub it with one of the poles ( ) of the magnet about 30 times.

2. The magnetic needle can only indicate the direction when it can ( ).

3. Determine the magnetic pole of the magnetic needle

Make a simple compass

→The small magnet rod fixes the bottom of the test tube and then puts it on the ballpoint pen.

→Put the small magnet rod flat on the floating board and on the water surface.

→The small magnet rod on the test tube or floating board, when stationary, is the same as the pointer of the compass, facing the north and south directions, the N pole of the magnet points to the north, and the S pole of the magnet points to the south.

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For more information about the "Magnet Makes a Compass" PPT courseware, please click the Magnet ppt makes a compass ppt tag.

"Be a Compass" magnet PPT download:

"Make a Compass" Magnet PPT Download Part One: Introduction of New Knowledge Knowledge Review: Do you know what parts a compass is made of? It consists of four parts: magnetic needle, azimuth plate, bracket and box. The compass can help us identify the direction and is our good friend..

"Be a Compass" Magnet PPT:

"Make a Compass" Magnet PPT Part One Content: Making Magnetic Needles People have long discovered that iron nails and steel needles sometimes become magnetic after being contacted or rubbed by magnets. They also found that steel needles are stronger than iron nails and iron needles when they are also rubbed with magnets. The film has stronger magnetism. People are...

"Be a Compass" Magnet PPT Courseware 2:

"Make a Compass" Magnet PPT Courseware 2 Review: 1. The compass is one of the four great inventions of ancient China. What is the name of the earliest compass in the world? 2. What parts does a compass consist of? What are the functions of each? 3. How to use the compass correctly? think..

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Update Time: 2024-11-20

This template belongs to science courseware Third Grade Science Volume 2, Textbook Edition industry PPT template

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