GENERAL KNOWLEDGE

GK

SOLAR SYSTEM

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which are characteristics of the four inner planets
A
farthest from the sun, thin atmospheres and small diameters, few moons, short revolution time, dense and rocky
B
closest to the sun, gas giants, no solid surface, many moons and ring systems
C
farthest from the sun, gas giants, few moons, short revolution times
D
closest to the sun, dense and rocky, thin atmospheres and small diameters, few moons, short revolution times
Explanation: 

Detailed explanation-1: -Lesson Summary. The four outer planets-Jupiter, Saturn, Uranus, and Neptune-are all gas giants made primarily of hydrogen and helium. They have thick gaseous outer layers and liquid interiors. All of the outer planets have numerous moons, as well as planetary rings made of dust and other particles.

Detailed explanation-2: -The temperature of the early solar system explains why the inner planets are rocky and the outer ones are gaseous. As the gases coalesced to form a protosun, the temperature in the solar system rose. In the inner solar system temperatures were as high as 2000 K, while in the outer solar system it was as cool as 50 K.

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