Describe how Earth’s magnetic field protects the planet from the Sun’s harmful radiation and why this is important for life.
Answer
The Sun emits a stream of charged particles called solar wind. When this wind reaches Earth it encounters Earth’s magnetic field. Magnetic field lines divert charged particles around Earth forming a protective shield called the magnetosphere. This shielding prevents most harmful particles from reaching the surface. Without this protection, solar radiation could strip away the atmosphere and harm living organisms.
Step-by-step solution
- The Sun emits a stream of charged particles called solar wind.
- When this wind reaches Earth it encounters Earth’s magnetic field.
- Magnetic field lines divert charged particles around Earth forming a protective shield called the magnetosphere.
- This shielding prevents most harmful particles from reaching the surface.
- Without this protection, solar radiation could strip away the atmosphere and harm living organisms.
Common mistake: Thinking the shield is only the magnetic field without the magnetosphere concept
Concept tested: Magnetosphere protection
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