Tag: evs - i

Questions Related to evs - i

The inclination of orbit to ecliptic is maximum for planet _________ and minimum for planet _______.

evs - i our earth and our solar system solar system and sun planets and stars planets sunita's experience in space space exploration

  1. Mercury and Earth

  2. Mercury and Venus

  3. Venus and Earth

  4. Earth and Saturn

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Correct Option: A

Planets are divided in to two groups based on their characteristic.

Group - 1 Group - 2
- Structure of planets resemble to earth - Structure of planets resembles Jupiter
- They have fewer natural satellites - They have large number of natural satellites 
- They have thin atmosphere - Rings are seen around planets.

Which of the following are included in Group - 2?

evs - i our earth and our solar system solar system and sun planets and stars planets sunita's experience in space space exploration

  1. Mercury and Venus

  2. Saturn and Mercury

  3. Jupiter and Saturn

  4. Jupiter and Venus

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Correct Option: C
Explanation:

All the planets among Jupiter, Saturn, Neptune and Uranus all in the second group.


Hence, for among given options the pair Jupiter and Saturn fall in second group.

Answer-(C)

Asteroid or planetoids are _____________.

evs - i our earth and our solar system solar system and sun planets and stars planets sunita's experience in space space exploration

  1. shining stars near the Earth

  2. shooting stars

  3. meteorites

  4. a swarm of small bodies revolving round the sun between the orbits of Mars and Jupiter

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Correct Option: D
Explanation:
  • Asteroids and planetoids are small bodies of varying sizes ranging from few kilometres to few hundred kilometres of diameter. They are found in a large number in a belt between Mars and Jupiter and they revolve around the sun like planets but are not large enough to be called planets.
  • Sometimes very small asteroids enter into earth's atmosphere. If these bodies reach the earth's surface then they are called meteorites. Most of the time they get burned up due to the friction caused by the atmosphere of the earth and thus appear like shooting stars.
  • Hence option D is correct.

Asteroids revolve around the Sun between the orbits of __________.

evs - i our earth and our solar system solar system and sun planets and stars planets sunita's experience in space space exploration

  1. Earth and Jupiter

  2. Venus and Jupiter

  3. Uranus and Jupiter

  4. Mars and Jupiter

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Correct Option: D

What will happen if you place a cup on a table in space?

evs - i our earth and our solar system sunita's experience in space space exploration solar system and sun

  1. It will remain stationary at its position

  2. It will start vibrating and break eventually

  3. It will rise up as soon as you remove your hand from the cup

  4. It will slide sideways on the table

Show answer
Correct Option: C
Explanation:

There is no gravity is space which means no downward gravitational force acts on the object kept in space. Thus as soon as we remove our hand from the cup, no gravitational force acts on it to keep it stationary on the table and hence the cup rises upwards.

The correct answer is option C.

Why would it be hard to pour a liquid in a cup kept in space?

evs - i our earth and our solar system sunita's experience in space space exploration solar system and sun

  1. The density of liquid increases in space and it can not flow like a liquid

  2. The liquid will freeze in space

  3. The liquid won't fall down as there is no gravity in space

  4. It will stick to the container and hence can not be poured

Show answer
Correct Option: C
Explanation:

As there is no gravity in space, no downward gravitational force acts on the object kept in space.So, the object does not move downwards. When we pour a liquid in a cup kept in space, the liquid do not fall downwards to fill the cup because of zero gravity in the space.

What will happen if you place a cup on an inclined surface in space?

evs - i our earth and our solar system sunita's experience in space space exploration solar system and sun

  1. It will slide along the surface

  2. It will rise up vertically

  3. It will rise perpendicular to the plane of the inclined surface

  4. It will remain stationary at its position

Show answer
Correct Option: C
Explanation:

As there is no gravity is space, thus no gravitational force acts on the cup kept in space. The only force acting on the cup placed on the inclined surface is the normal reaction exerted by the inclined surface (perpendicular to the plane of inclined surface) which makes the cup to rise in the direction perpendicular to the plane of inclined surface.

Plantation of sapling on a large scale is celebrated as

evs - i the environment and us pollution of soil degradation of land damaging the forests

  1. Forestation day

  2. Vanamahotsava

  3. Deforestation day

  4. Plantation day

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Correct Option: B
Explanation:

Van Mahotsav is celebrated for 1 week every year where millions of people plant trees in order to restore the forests and plantation that has been constantly destroyed. 

In 2019, it was celebrated from 1st to 7th July.
So, option B is the correct answer.

The natural disasters that can affect habitats in the environment are

evs - i the environment and us pollution of soil degradation of land damaging the forests

  1. Droughts

  2. Floods

  3. Thinning of ozone

  4. Both A and B

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Correct Option: D
Explanation:

Drought and floods both are the natural disasters in which there is the extreme scarcity of water due to the absence of rainfall and floods due to heavy rainfall. Drought results in infertile agricultural lands due to nonavailability of water for crop production. Hence there is no food and water for the organisms in that area that results in either migration of organisms or their death. Flood makes soli saline and erodes the fertile soil that affects the crop production even it damages the flora, fauna and other infrastructure. Thus, the correct answer is option D.

Which of the following is an effect of deforestation?

evs - i the environment and us pollution of soil degradation of land damaging the forests

  1. Water pollution

  2. Greenhouse effect

  3. Outbreak of diseases

  4. Extinction of aquatic life

Show answer
Correct Option: B
Explanation:

If deforestation is performed, there will be no trees so, the amount of the greenhouse gasses will increase in the atmosphere. These greenhouse gasses trap heat from the infrared radiation in the atmosphere and increases the atmosphere's temperature i.e, global warming. 

Thus, the correct answer is option B.