SCIENCE
PHYSICAL SCIENCES
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Question
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Detailed explanation-1: -The planets Mercury, Venus, Earth, and Mars, are called terrestrial because they have a compact, rocky surface like Earth’s terra firma. The terrestrial planets are the four innermost planets in the solar system.
Detailed explanation-2: -Mars: The solar system’s Red Planet Mars is the fourth planet from the sun.
Detailed explanation-3: -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.
Detailed explanation-4: -In our solar system, Earth, Mars, Mercury and Venus are terrestrial, or rocky, planets.
Detailed explanation-5: -The four rocky planets are Mercury, Venus, Earth and Mars. They are the closest four planets to the Sun. They are made of rocks and metals. They have a solid surface and a core which is mainly made of iron.