Page 1 - Home Assignment- Eath as a giant magnet,preserving magnet

SAI INTERNATIONAL SCHOOL

Class 6
Home Assignment
Subject- Physics

Ch. – Magnets and Their Effects
Subtopic- Earth as a giant magnet, preserving magnet

INSTRUCTIONS:
Please solve or paste the worksheet in the Physics Copy.
For Assertion& Reason question follow the following directions.
DIRECTION: Each of these questions contains an Assertion followed by
Reason. Read them carefully and answer the question on the basis of
following options. You have to select the one that best describes the two
statements.

(a) If both Assertion and Reason are correct and Reason is the correct
explanation of Assertion.
(b) If both Assertion and Reason are correct, but Reason is not the correct
explanation of Assertion.
(c) If Assertion is correct but Reason is incorrect.
(d) If Assertion is incorrect but Reason is correct
(e) If Assertion & Reason both are incorrect.
Sl.No QUESTIONS MARKS

What causes the Earth’s magnetic field? 1
a) The movement of liquid iron in the earth’s outer core.
1 b) The gravitational field of the Earth.
c) The permanent magnet in the Earth’s core.
d) None of these
The north end of the freely suspended magnets points towards 1
a) Geographical East
2 b) Geographical West
c) Geographical North
d) Geographical South
The North Pole of a magnetic needle is painted red 1
3
colour.(True/false)
4 A magnet can have two North Poles.(True/False) 1

Assertion: A freely suspended magnet always orients itself 1
5 along the north-south direction.

Reason: The two poles of a magnet cannot be separated.
Magnetism of a magnet is lost by doing which of the following 1
act
1 a) Keeping in a box
b) Heating
c) Hammering
d) Both b and c