Mars is known as the Red Planet. It is called this because of its reddish appearance, which is due to iron oxide, or rust, on its surface. Mars is the fourth planet from the Sun and has a thin atmosphere. It is one of the most studied planets because scientists believe it may have once supported life.
This question related to Chapter 12 Science Curiosity Class 6th NCERT.
From the Chapter 12. Beyond Earth.
Give answer according to your understanding.
Mars is called the Red Planet due to its reddish appearance.
Explanation: The red color comes from iron oxide, or rust, on its surface.
For more please visit here:
https://www.tiwariacademy.com/ncert-solutions-class-6-science-curiosity-chapter-12/