[Mission 2022] QUIZ – 2020: INSIGHTS STATIC QUIZ , 30 October 2021 – Geography

Solution: a)

Microgravity is the condition in which people or objects appear to be weightless. This occurs when gravitation force around is weak (but not zero) or when objects are in a state of free fall (as in a satellite).

For example, astronauts can move equipment weighing hundreds of pounds with their fingertips due to microgravity.

Solution: c)

A black hole cannot be seen because of the strong gravity that is pulling all of the light into the black hole’s centre.

However, scientists can see the effects of its strong gravity on the stars and gases around it.

If a star is orbiting a certain point in space, scientists can study the star’s motion to find out if it is orbiting a black hole.

Solution: d)

An important factor that influences the distribution of temperature is insolation. Insolation is the incoming solar energy intercepted by the earth.

The amount of insolation decreases from the equator towards the poles. Therefore, the temperature decreases in the same manner.

Solution: b)

Pulsars are highly magnetized, rotating neutron stars that emit a beam of electromagnetic radiation.

They are spherical, compact objects but contain more mass than that of the sun.

Scientists are using pulsars to study extreme states of matter, search for planets beyond Earth’s solar system and measure cosmic distance.

Solution: c)

Distribution of land and sea, heat transfer by way of sea and land breezes etc redistribute the increased insolation so that the effects are not felt on a large scale.