Tag: evs

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Questions Related to evs

Multiple choice evs our solar system asteroids, comets, and meteors and meteorites other objects in solar system asteroids, comets and meteors

The meteors seldom reach the earth because of :

  1. freezing caused when they pass through the atmosphere

  2. vapourization caused when they pass through the atmosphere

  3. greater force of attraction towards sun

  4. greater force of attraction towards moon
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Meteors seldom reach earth because of vapourization caused when they pass the atmosphere.

Ans:  vapourization caused when they pass the atmosphere.

Multiple choice evs our solar system asteroids, comets, and meteors and meteorites other objects in solar system asteroids, comets and meteors

The tail of a comet is directed away from the sun because.

  1. The radiation emitted by the sun exerts a radial pressure on the comet throwing its tail away from the sun

  2. As the comet rotates, the lighter mass of the comet is attracted by some star situated in the direction of its tail

  3. As the comet rotates around the sun, the lighter mass of the comet is pushed away due to the centrifugal force alone

  4. The tail of the comet always exists in the same orientation
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

As a comet approaches the sun, solar radiation pressure and the solar wind push the ionized gases and dust particles away from the sun, creating the characteristic tail.

Multiple choice evs mud and stones importance of soil in agriculture soil - formation, profile and properties soil as a natural resource

Soil is the component of

  1. Atmosphere

  2. Lithosphere

  3. Hydrosphere

  4. Exosphere
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The lithosphere is the solid portion of the Earth. It is a dense shell of material, that surrounds the entire planet. Even though most of the Earth's surface is covered with water, underneath, that water is a solid layer of rock. With the exception of ice, basically any solid non-organic material on the Earth is from the lithosphere. This includes soil, rocks, sand, etc.

Multiple choice evs mud and stones importance of soil in agriculture soil - formation, profile and properties soil as a natural resource

Which of the following is the important natural resources for plants and animals?

  1. Coal

  2. Petrol

  3. Diesel

  4. Soil
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Soil, as we know an important abiotic component of our environment. It provides nutrition and water to grow crops. They hold the roots of the trees and are extremely necessary for the proper growth of plants and trees. In the absence of proper nutrients in the soil, the plants and trees show nutritional deficiencies and retarded growth.

Apart from this, animals depend on plants for their survival and so they are dependant on soil for providing habitat and proper development of plants that they consume.
Coal, petroleum and natural gas are important fossil fuels that also from non-renewable resources that are used for various reasons like running automobiles, house gas cylinders etc.

They are remnants of dead plants and animals over a long period of time. So, they are not related to the growth of plants and animals.


Multiple choice evs mud and stones importance of soil in agriculture soil - formation, profile and properties soil as a natural resource

Soil helps plants by

  1. Supplying them water and minerals.

  2. Supplying them air.

  3. Preparing food in their plants.

  4. Helping them move from one place to another.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The roots of the plants are held firmly in the soil. Different types of soil have different texture and particles. They have different levels of minerals and nutrients embedded in them. Roots absorb water from the soil by the process of osmosis. Along with water, mineral nutrients also enter the soil.

So, we can say that option A "Supplying them water and minerals" is the correct answer.