Earth Resources

Soil formation in nature does not occur due to

• wind

• sun

• temperature changes

• plastic bags

Answer explanation

Plastic bags are not responsible for soil formation, they are the cause of soil pollution. Factors responsible for soil formation are sun, wind, water, temperature changes.

The jacket of air surrounding the Earth is known as

• Troposphere

• Atmosphere

• Mesosphere

• Stratosphere

Answer explanation

The jacket of air surrounding the Earth is known as Earth's atmosphere. Troposphere, Mesosphere and Stratosphere are the layers of the atmosphere.

Choose the correct option with respect to prevention of soil pollution.

• Burying plastic bags in the soil

• Excess use of pesticides on the crops

• Use of manure instead of fertilisers

• All of these

Answer explanation

To prevent soil pollution one can use manure instead of fertilisers. Excess use of fertilisers, pesticides, throwing garbage or burying plastic bags in the soil causes soil pollution.

Loss of topsoil can be prevented by

• Afforestation

• Proper irrigation

• Preventing overgrazing of animals

• All of these

Answer explanation

Top soil can be prevented by afforestation, proper irrigation methods, preventing overgrazing of animals, etc.

What would coal be considered?

• Renewable

• Non-Renewable

Which of the following organisms are responsible for soil formation?

• Aloe vera

• Neem tree

• Lichens

• Mushroom

Answer explanation

Lichens grow on stones and secretes some chemicals which causes weathering of rock / stones, resulting in soil formation.

The earth's crust is made up of large divisions known as

• continents

• tectonic plates

• pickles

• cores

Tags

NGSS.MS-ESS2-1

The word geology literally means the study of the

• earth

• core

• music

• cats

The earth's crust is

• thicker under oceans than under continents.

• stuffed with cheese.

• constantly changing.

• thinner under oceans than under continents.

The Moho is found at the

• bottom of the crust.

• under your bed.

• center of the earth.

• football game.