Magnetism

Unit 1

Magnetism

Learning Objectives

• To know about the discovery of magnets

• To identify Magnetic and Non Magnetic Materials

• To distinguish between north and south poles

• To list out the properties of magnets

• To explain the principle of Maglev Train

Introduction

You might have seen magnets. Have you ever enjoyed playing with them?

Take a steel glass. Take a needle through which thread is passed. Press the thread with a finger near the hole of the needle as shown in the figure and raise the glass upward slowly.

What happens?

---------------------------------------------------------------

Observe the same activity performed by your teacher and note it.

------------------------------------------------------------------------

---------------------------------------------------------------------------

Does the needle stand vertically up without touching the glass? Why this happens?

--------------------------------------------------------------------------------

--------------------------------------------------------------------------------