Q1. What is the asteroid belt primarily composed of?
- (a) Rocks and metals
- (b) Gases and ice
- (c) Liquid water
- (d) Volcanic magma
Answer & solution
Answer: (a) Rocks and metals
The asteroid belt, located between the orbits of Mars and Jupiter, is primarily composed of rocky and metallic debris — remnants from the early solar system that never coalesced into a planet due to Jupiter's strong gravitational influence. The asteroids range from tiny rocks to dwarf planet Ceres (diameter ~940 km). Most are silicate (rocky) or metallic (iron-nickel) compositions.
Option 2 (Gases and ice): This describes comets or the outer solar system bodies (Kuiper Belt objects); not the asteroid belt.
Option 3 (Liquid water): No liquid water exists in the asteroid belt; some asteroids may contain water ice but not in liquid form.
Option 4 (Volcanic magma): Not applicable; asteroids are cold, solid bodies, not volcanically active.