Question

Explain the main features of a planet.

Answer 1

The characteristics of eight planets are:

1)Venus : Its surface is a brownish yellow colour because of its atmosphere which is composed of largely of sulphuric acid and CO2.

2)Mars: It takes 687 days to revolve around the sun.This planet is very hottest planet then other planets.

3)Uranus: It rotates the sun in 84 years, its size is 51,118 kilometers in diameter.

4)Neptune: It's size is 49,500 kilometres in diameter. It orbit the sun every 165 years.

5)Mercury:It is the closest planet to the sun,so its orbits the sun very quickly just in 88 days.It surface is grey to orange in colour and it is covered with craters.

6)Earth: Earth rotates the sun every 365 days(years) and rotates in its every axis in 24 hours(day). It size is a little more than 12000 km. In diameter. This planet is the different from the other planets as it maintains life on it.

7)Jupiter:It is the largest of the solar system as a diameter of 142,980.

8)Saturn:It is a large planet as 120,536.It's orbit the sun in 12 years.

Answer 2

Answer:

1. Size

2. Fluid state

3. Retain gases

4. Magnentic moments

Explanation:

1. Because gravity pulls planets into a roughly spherical form, their size may be approximated by an average radius. Planets, on the other hand, are not exactly spherical.

2. The defining physical feature of a planet is that it is huge enough for the force of its own gravity to dominate over the electromagnetic forces that hold its physical structure together, resulting in a state of hydrostatic equilibrium. This indicates that all planets are either spherical or spheroidal.

3. Every planet originated in a totally fluid state; during early development, denser, heavier components sank to the centre, leaving lighter materials near the surface. As a result, each has a distinct interior consisting of a thick planetary core surrounded by a mantle that is either or fluid.

4. Except for Mercury, all of the planets in the Solar System have significant atmospheres because their gravity is powerful enough to retain gases close to the surface.

5. One distinguishing feature of planets is their intrinsic magnetic moments, which give birth to magnetospheres. A magnetic field implies that the planet is still geologically active.

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