Tag: our earth and our solar system

Questions Related to our earth and our solar system

Earth : Bluish green :: ________ : Reddish.
evs - ii our earth and our solar system solar system and sun planets and stars introduction to solar system planets sunita's experience in space space exploration

  1. Mars

  2. Mercury

  3. Jupiter

  4. Uranus

Show answer
Correct Option: A
Explanation:

Earth appears to be bluish green in colour and Mars appears to be reddish in colour. Hence it is also known as the red planet.

There is life on Earth because of:

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

  1. optimum sunlight

  2. presence of water and atmosphere

  3. presence of ozone layer

  4. all of the above

Show answer
Correct Option: D
Explanation:

Earth is at an optimum distance from the Sun, therefore the sunlight reaching the Earth is not extremely hot. Also, the ozone layer prevents the entry of harmful rays. Presence of water and atmosphere that are essential for life an Earth to grow.

The planet Mercury:

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

  1. is a very small planet and hence not visible

  2. is very far from Earth as compared to other planets

  3. remains covered by clouds most of the day time

  4. is hidden by the glare of the Sun and hence not visible during the day time

Show answer
Correct Option: D
Explanation:

Mercury is the first planet of our solar system. It is very close to the Sun and is mostly hidden because of excessive light or glare of the Sun. Hence, it is not easily visible. However, it can be seen just before sunrise or just after sunset from places where trees and buildings do not disturb the view.

Brightest planet in the night sky is:

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

  1. Jupiter

  2. Venus

  3. Earth

  4. Mars

Show answer
Correct Option: B
Explanation:

Venus is the brightest planet in the night sky and can be spotted easily.

Mercury, Venus, Earth and Mars are not among the  _______ planets.
evs - ii our earth and our solar system solar system and sun planets and stars introduction to solar system planets sunita's experience in space space exploration

  1. outer

  2. inner

  3. warmer

  4. lighter

Show answer
Correct Option: A
Explanation:

A band of asteroids present between Mass and Jupiter separates the planets into inner (planets before the band of asteroids) and outer (planets after the band of asteroids) planets. Mercury, Venus, Earth and Mars lie before the band of asteroids and are called inner planets.

As these planets stay closer to the sun these are among warmer planet and not among the lighter planets.

The planet nearest to the Sun is ______.

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

  1. Mercury

  2. Venus

  3. Mars

  4. Earth

Show answer
Correct Option: A
Explanation:

The planet nearest to the sun is Mercury.

The correct option is A.

Which of the following statements is / are correct ?

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

  1. A solar panel is made by combining a large number of solar concentrators.

  2. To work properly, wind energy generators need wind speeds of at least about 15 km/h.

  3. Many of the sources ultimately derive their energy

  4. none 

Show answer
Correct Option: A
Explanation:

A solar concentrator uses lenses, called Fresnel lenses, which take a large area of sunlight and direct it towards a specific spot by bending the rays of light and focusing them. Some people use the same principle when they use a magnifying lens to focus the Sun's rays on a pile of kindling or paper to start fires.

How did planets and other objects in the solar system form?

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

  1. After the Sun formed, it threw off hot pieces that spun and cooled.

  2. The Sun captured objects that formed in other places in the galaxy.

  3. Two stars collided, and the broken pieces went into orbit around the Sun.

  4. Material in a disc formed large clumps as the Sun fanned in the centre of the disc.

Show answer
Correct Option: D
Explanation:
The planets in our solar system are believed to have formed from the same spinning disc of dust that formed the Sun. This disc, called the solar nebula, was composed mainly of hydrogen and helium, but also had other elements in smaller proportions. The nebula had a certain amount of angular momentum orbiting the forming Sun. Particles in the spinning disc began to clump together as gravity attracted them to each other.

Which of the following belongs to the class of inferior planets?

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

  1. Mercury

  2. Venus

  3. Pluto

  4. Saturn

Show answer
Correct Option: A
Explanation:

Inferior planets are those planets which is closer to Sun than the Earth, Mercury and Venus are the inferior planets.

Which of the following is the smallest planet?

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

  1. Jupiter

  2. Venus

  3. Mercury

  4. None of the above

Show answer
Correct Option: C
Explanation:

Mercury is the smallest planet.