GENERAL KNOWLEDGE

GK

SOLAR SYSTEM

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which best describes the terrestrial planets?
A
Large, planetary rings
B
Small, dense, rocky
C
Rocky cores, close to sun, surface craters
D
Made of helium and hydrogen
Explanation: 

Detailed explanation-1: -Terrestrial planets are Earth-like planets made up of rocks or metals with a hard surface. Terrestrial planets also have a molten heavy-metal core, few moons and topological features such as valleys, volcanoes and craters.

Detailed explanation-2: -In general, terrestrial (rocky) planets are denser than the gas and ice giants. Earth has a density of around 5.5 g/cm3 compared with Jupiter’s density of 1.3 g/cm3.

Detailed explanation-3: -The following are reasons being terrestrial planets rocky Terrestrial planets are formed close to Sun where it was too warm for gases to condense to solid particles; only rocky particles remain. The solar wind was most intense near the sun, so it blew off lighter particles materials from terrestrial planets.

There is 1 question to complete.