Question:
Earth's magnetic field protects life by:
Earth's magnetic field protects life by:
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The magnetosphere and the ozone layer are Earth's two primary shields. The magnetic field blocks charged particles, while the ozone layer blocks high-energy electromagnetic radiation (UV).
Updated On: Apr 19, 2026
- Increasing gravity
- Blocking visible light
- Deflecting harmful solar radiation
- Reducing ozone
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The Correct Option is C
Solution and Explanation
Step 1: Understanding the Question:
The question asks about the primary biological benefit of the Earth's magnetosphere.
Step 2: Detailed Explanation:
The Sun constantly emits a stream of charged particles (ions and electrons) known as the solar wind.
The Earth's magnetic field acts as a shield, creating the magnetosphere. This field exerts a Lorentz force on the incoming charged particles, deflecting them away from the Earth or towards the poles (causing auroras).
Without this field, these high-energy particles would strip away the atmosphere and cause lethal damage to the DNA of living organisms.
Step 3: Final Answer:
The magnetic field protects Earth by deflecting harmful solar radiation and charged particles.
The question asks about the primary biological benefit of the Earth's magnetosphere.
Step 2: Detailed Explanation:
The Sun constantly emits a stream of charged particles (ions and electrons) known as the solar wind.
The Earth's magnetic field acts as a shield, creating the magnetosphere. This field exerts a Lorentz force on the incoming charged particles, deflecting them away from the Earth or towards the poles (causing auroras).
Without this field, these high-energy particles would strip away the atmosphere and cause lethal damage to the DNA of living organisms.
Step 3: Final Answer:
The magnetic field protects Earth by deflecting harmful solar radiation and charged particles.
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