Question

Which hypothesis explains the origin of the Earth ?

• A. Nebular Hypothesis
• B. Plate Tectonic Hypothesis
• C. Big Bang Hypothesis
• D. Null Hypothesis

Hint:

Distinguish the scales of these theories:
- Big Bang = Origin of the entire Universe.
- Nebular Hypothesis = Origin of our Solar System (including Earth).
- Plate Tectonics = How the surface of the Earth moves and changes.

Answer 1

The Correct Option is A

Step 1: Understanding the Question:
We need to identify the scientific hypothesis that specifically explains the formation of the Earth and the solar system.

Step 2: Detailed Explanation:
Let's analyze the given hypotheses:
-

Nebular Hypothesis: This is the most widely accepted model that explains the formation and evolution of the Solar System.
It proposes that the Sun, the Earth, and all other planets formed from a giant, rotating cloud of interstellar gas and dust called a solar nebula.
-

Plate Tectonic Hypothesis (or Theory): This theory explains the large-scale movements of the Earth's lithosphere (the crust and upper mantle).
It explains phenomena like continental drift, earthquakes, and volcanic activity, but not the origin of the Earth itself.
-

Big Bang Hypothesis (or Theory): This is the leading cosmological model for the observable

universe.
It describes how the universe expanded from an initial state of extremely high density and temperature, but it does not specifically detail the formation of the Earth.
-

Null Hypothesis: This is a term used in statistics and scientific testing.
It is a default statement that there is no relationship between two measured phenomena. It has nothing to do with cosmology.

Step 3: Final Answer:
The Nebular Hypothesis explains the origin of the Earth.
This corresponds to option (A).