Some Natural Phenomena | Chapter Assessment | English | Grade 8

Which of the following causes large scale destruction?

• Lightning

• Earthquake

• Floods

• All of the above

Answer explanation

Lightning, earthquake as well as flood causes large scale destruction.

Tags

NGSS.MS-ESS3-2

Lightning is caused by the accumulation of charges

• On the ground

• In the clouds

• On the ground and in the clouds

• None of the above

Answer explanation

Lightning is caused by accumulation of charges in the clouds.

Tags

NGSS.MS-ESS2-5

Electric charge can be transferred from a charged object to another through

• a metal conductor

• an insulator

Answer explanation

Charges can flow only in conductors.

Human body can conduct electricity.

• TRUE

• FALSE

Answer explanation

Human body can conduct electricity. When a person touches a charged object, the person becomes a medium for the charges to go from the object into the ground.

The process of electric discharge can occur between

• two clouds

• a cloud and the Earth

• any number of clouds

• all of the above

Answer explanation

An electric discharge can occur between two or more clouds, as well as between clouds and the Earth.

Tags

NGSS.MS-PS2-5

Which of the following is a safe place during lightning?

• A closed car

• A house

• A bus

• All of the above

Answer explanation

A closed car or a bus, and a house is a safe place to be during lightning.

The point on the Earth's surface, right above the source of an earthquake is called ______ .

• focus

• epicentre

• seismic Point

• none of the above

Answer explanation

The location right above the source of the earthquake is called an epicentre.