Question

how did collisions with large objects such as asteroids result in the development of early earth?
a collisions compacted and settled the surface layers of earth.
b collisions caused the formation of earths mountains.
c collisions contributed to the growth of earth through the accumulation or piling up of material.

Explanation:

In the early stages of Earth's formation, the planet was constantly bombarded by large objects like asteroids. These collisions added mass to the Earth as the material from the colliding objects accumulated on the planet. This process of accretion (the accumulation or piling up of material) was crucial for the growth of the Earth from a small planetary embryo to the large planet we know today.

• Option A: Compacting and settling of surface layers is more related to geological processes like sedimentation over time rather than the immediate effect of large - object collisions on the growth of early Earth.
• Option B: The formation of mountains is mainly due to tectonic plate movements (e.g., continental - continental collision) in the later stages of Earth's geological history, not a direct result of early asteroid collisions for the growth of the planet.

Answer:

C. Collisions contributed to the growth of Earth through the accumulation or piling up of material.