Tag: our earth and our solar system

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Questions Related to our earth and our solar system

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

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?

  1. Mercury and Venus

  2. Saturn and Mercury

  3. Jupiter and Saturn

  4. Jupiter and Venus
Reveal answer Fill a bubble to check yourself
C Correct answer
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)

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

Asteroid or planetoids are _____________.

  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
Reveal answer Fill a bubble to check yourself
D Correct answer
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.
Multiple choice evs - i our earth and our solar system sunita's experience in space space exploration solar system and sun

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

  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
Reveal answer Fill a bubble to check yourself
C Correct answer
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.

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

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

  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
Reveal answer Fill a bubble to check yourself
C Correct answer
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.

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

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

  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
Reveal answer Fill a bubble to check yourself
C Correct answer
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.