L15 SOME NATURAL PHENOMENA (CLASS8)

An electroscope is a device which is used to find if an object is

• charged

• magnetic

• free of cracks

• Hot

Tags

NGSS.MS-PS2-3

When a glass rod is rubbed with a piece of silk cloth the rod

• becomes positively charged while the cloth has a negative charge.

• and the cloth both acquire positive charge.

• and the cloth both acquire negative charge.

• becomes negatively charged while the cloth has a positive charge.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

The movement of the earth’s plates causes

• Cyclones

• Lightning

• Earthquake

• Thunderstorm

Tags

NGSS.MS-ESS3-2

NGSS.MS-ESS2-2

Two charged objects are brought close to each other. Choose the most appropriate statement from the following options:

• they may repel

• they may attract

• they may attract or repel depending on the type of charges they carry

• there will be no effect

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

The device used to measure intensity of earthquakes is

• seismograph

• odometer

• hygrometer

• anemometer

The boundaries of the earth’s plate are known as

• seismic zone

• fault zones

• mantle

• outer core

Tags

NGSS.MS-ESS2-3

Earthquakes can cause

(i) Tsunami

(ii) Landslide

(iii) Floods

(iv) Lightning

• (i), (ii) & (iii)

• (ii) & (iv)

• (ii), (iii) & (iv)

• (iii) & (iv)

Tags

NGSS.MS-ESS3-2

The process of transfer of charges from a charged object to the earth is called

• earthing

• lightning

• electron movement

• oscillation motion

How many types of charges are gained by rubbing objects?

• 2

• 1

• 3

• 4

Tags

NGSS.MS-PS2-3

During a thunderstorm which action may not be done?

• Switching on / off electric lights

• Using a mobile phone

• Using Telephone having cord

• None of the above