"Magnets are Magnetic" Magnet PPT Download

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"Magnets are Magnetic" Magnet PPT Download

Part One: Importing New Knowledge

Demonstrate experimental magic: the toy hangs on a stick by itself

Who can tell me the secret?

Today, let’s explore the mystery of magnets together.

Magnets are magnetic PPT, part 2: new knowledge explanation

1. What objects can magnets attract?

What objects do we think magnets can and cannot attract? How do we test our opinions?

It needs to be tested by doing experiments.

Conclusive evidence can be obtained by doing experiments.

Activity 1: What objects can magnets attract?

Experimental equipment: iron beads, glass beads, paper clips, rubber bands, pencils, plastic rulers, wooden rulers, springs, cardboard, book clips, copper wire.

Experimental requirements

1. During the experiment, use a magnet to slowly approach each material. The experiment for each material should be repeated several times.

2. The recorder should prepare experimental records in a timely manner and fill in the record form.

3. After the experiment is completed, the material clerk will clean it up.

Activity 2: Identify the materials of coins

Which ones are made of iron materials?

First use observation methods to identify, and then use experimental methods to identify.

2. Can magnets attract iron through objects?

Activity 1: A magnet attracts iron through aluminum sheets, cloth, thin wood chips, rubber sheets and other objects. What do you find?

Activity 2: Use magnets to attract paper clips across different amounts of paper

Use 8, 16, 32... paper to separate the magnet and let it attract paper clips. What did you find?

illustrate

1. Magnets can attract iron through thin objects; they cannot attract iron through objects that are too thick;

2. The magnetic force of a magnet is related to the distance. If it is close, the magnetism is strong, and if it is far away, the magnetism is weak.

Magnets are magnetic PPT, the third part: knowledge expansion

tips

Stainless steel is mainly composed of iron, but magnets can only attract some types of stainless steel, and some types of stainless steel magnets cannot attract. Magnets can attract audio tapes and video tapes because they contain iron powder in their tapes. But computer disks, which look similar to video tapes, cannot be attracted by magnets.

Magnets have magnetic PPT, part 4 content: Consolidation exercises

1. A magnet can attract objects made of ( ) a type of material. This property is called ( ).

2. Magnets can attract iron through ( ); objects with ( ) are called magnets.

3. Among the objects in the list, the ones that cannot be attracted by magnets are ( ).

A. Iron nails B. Aluminum plate C. iron pot

4. Magnetism can attract iron through ( ) objects.

A. Thin B. thick c. any

Magnets are magnetic PPT, part 5: Class summary

1. The property of magnets that can attract iron is called magnetism.

2. Magnets can also attract ferromagnetism across some objects.

Explanation: Iron can attract iron through thin objects; it cannot attract iron through objects that are too thick.

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For more information about the PPT courseware "Magnets Magnets Are Magnetic", please click the Magnets ppt Magnets Are Magnetic ppt tag.

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Update Time: 2024-11-17

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