What If Earth Lost Its Magnetic Field ? : āĻ¯āĻĻāĻŋ āĻĒā§āĻĨāĻŋā§ąā§ā§ā§ āĻ¨āĻŋāĻā§° āĻā§āĻŽā§āĻŦāĻā§āĻ¯āĻŧ āĻā§āĻˇā§āĻ¤ā§ā§° (Magnetic Field) āĻšā§ā§°ā§ā§ąāĻžāĻ āĻĒā§āĻ˛āĻžāĻ¯āĻŧ āĻ¤ā§āĻ¨ā§āĻ¤ā§ āĻāĻŋ āĻšâāĻŦ ?
Magnetic Shield Around Earth : (āĻĒā§āĻĨāĻŋā§ąā§ā§° āĻā§āĻŽā§āĻŦāĻā§āĻ¯āĻŧ āĻĸāĻžāĻ˛)
Earth’s Magnetic Field : (āĻĒā§āĻĨāĻŋā§ąā§ā§° āĻā§āĻŽā§āĻŦāĻā§āĻ¯āĻŧ āĻā§āĻˇā§āĻ¤ā§ā§°)
The Earth's magnetic field acts like a protective shield. It deflects harmful charged particles coming from the Sun. These particles are known as solar wind.
āĻĒā§āĻĨāĻŋā§ąā§ā§° āĻā§āĻŽā§āĻŦāĻā§āĻ¯āĻŧ āĻā§āĻˇā§āĻ¤ā§ā§°ā§ āĻāĻāĻž āĻ¸ā§ā§°āĻā§āĻˇāĻžāĻŽā§āĻ˛āĻ āĻĸāĻžāĻ˛ (protective shield) āĻšāĻŋāĻāĻžāĻĒā§ āĻāĻžāĻŽ āĻā§°ā§āĨ¤ āĻ āĻ¸ā§ā§°ā§āĻ¯ā§° āĻĒā§°āĻž āĻ āĻšāĻž āĻā§āĻˇāĻ¤āĻŋāĻāĻžā§°āĻ āĻāĻ§āĻžāĻ¨āĻ¯ā§āĻā§āĻ¤ āĻāĻŖāĻŋāĻāĻžāĻŦā§ā§°āĻ āĻā§ā§°āĻžāĻ āĻĻāĻŋāĻ¯āĻŧā§āĨ¤ āĻāĻ āĻāĻŖāĻŋāĻāĻžāĻŦā§ā§°āĻ Solar Wind (āĻ¸ā§ā§°ā§āĻ¯ āĻŦāĻ¤āĻžāĻš) āĻŦā§āĻ˛āĻŋ āĻā§ā§ąāĻž āĻšāĻ¯āĻŧāĨ¤
Without Magnetic Field : (āĻā§āĻŽā§āĻŦāĻā§āĻ¯āĻŧ āĻā§āĻˇā§āĻ¤ā§ā§° āĻ¨āĻžāĻĨāĻžāĻāĻŋāĻ˛ā§)
Without a magnetic field, solar radiation could directly reach Earth. Over time, this could damage the atmosphere and increase radiation exposure.
āĻ¯āĻĻāĻŋ āĻĒā§āĻĨāĻŋā§ąā§ā§° āĻā§āĻŽā§āĻŦāĻā§āĻ¯āĻŧ āĻā§āĻˇā§āĻ¤ā§ā§° āĻ¨āĻžāĻĨāĻžāĻā§, āĻ¤ā§āĻ¨ā§āĻ¤ā§ āĻ¸ā§ā§°ā§āĻ¯ā§° āĻŦāĻŋāĻāĻŋā§°āĻŖ (solar radiation) āĻ¸ā§āĻāĻžāĻā§ āĻĒā§āĻĨāĻŋā§ąā§āĻ¤ āĻĒā§°āĻŋāĻŦāĨ¤ āĻ¸āĻŽāĻ¯āĻŧā§° āĻ¸ā§āĻ¤ā§ āĻ āĻŦāĻžāĻ¯āĻŧā§āĻŽāĻŖā§āĻĄāĻ˛āĻ āĻā§āĻˇāĻ¤āĻŋ āĻā§°āĻŋāĻŦ āĻĒāĻžā§°ā§ āĻā§°ā§ āĻĒā§āĻĨāĻŋā§ąā§āĻ¤ āĻŦāĻŋāĻāĻŋā§°āĻŖā§° āĻĒā§°āĻŋāĻŽāĻžāĻŖ āĻŦāĻĸāĻŧāĻžāĻŦ āĻĒāĻžā§°ā§āĨ¤
Satellites and Technology Affected : (āĻāĻĒāĻā§ā§°āĻš āĻā§°ā§ āĻĒā§ā§°āĻ¯ā§āĻā§āĻ¤āĻŋā§° āĻāĻĒā§°āĻ¤ āĻĒā§ā§°āĻāĻžā§ą)
Magnetic fields help protect satellites and electronic devices from energetic solar particles. Without this protection, many satellites could malfunction and communication systems could be disrupted.
āĻā§āĻŽā§āĻŦāĻā§āĻ¯āĻŧ āĻā§āĻˇā§āĻ¤ā§ā§°ā§ āĻāĻĒāĻā§ā§°āĻš (satellites) āĻā§°ā§ āĻāĻ˛ā§āĻā§āĻā§ā§°āĻ¨āĻŋāĻ āĻ¯āĻ¨ā§āĻ¤ā§ā§°āĻ¸āĻŽā§āĻšāĻ āĻ¸ā§ā§°ā§āĻ¯ā§° āĻļāĻā§āĻ¤āĻŋāĻļāĻžāĻ˛ā§ āĻāĻŖāĻŋāĻāĻžā§° āĻĒā§°āĻž āĻ¸ā§ā§°āĻā§āĻˇāĻž āĻĻāĻŋāĻ¯āĻŧā§āĨ¤ āĻ¯āĻĻāĻŋ āĻāĻ āĻ¸ā§ā§°āĻā§āĻˇāĻž āĻ¨āĻžāĻĨāĻžāĻā§, āĻ¤ā§āĻ¨ā§āĻ¤ā§ āĻŦāĻšā§ āĻāĻĒāĻā§ā§°āĻš āĻŦāĻŋāĻāĻ˛ āĻš’āĻŦ āĻĒāĻžā§°ā§ āĻā§°ā§ āĻ¯ā§āĻāĻžāĻ¯ā§āĻ āĻŦā§āĻ¯ā§ąāĻ¸ā§āĻĨāĻžāĻ¤ āĻ¸āĻŽāĻ¸ā§āĻ¯āĻž āĻš’āĻŦ āĻĒāĻžā§°ā§āĨ¤
Auroras Everywhere : āĻ¸āĻāĻ˛ā§ āĻ āĻžāĻāĻ¤ā§ āĻ āĻ°ā§ā§°āĻž āĻĻā§āĻāĻž āĻ¯āĻžāĻŦ
Auroras occur when solar particles interact with Earth's magnetic field. Without a stable magnetic shield, these light effects could appear more widely across the planet.
āĻ ā§°ā§ā§°āĻž āĻ¤ā§āĻ¤āĻŋāĻ¯āĻŧāĻž āĻ¸ā§āĻˇā§āĻāĻŋ āĻšāĻ¯āĻŧ āĻ¯ā§āĻ¤āĻŋāĻ¯āĻŧāĻž āĻ¸ā§ā§°ā§āĻ¯ā§° āĻāĻŖāĻŋāĻāĻžāĻŦā§ā§° āĻĒā§āĻĨāĻŋā§ąā§ā§° āĻā§āĻŽā§āĻŦāĻā§āĻ¯āĻŧ āĻā§āĻˇā§āĻ¤ā§ā§°ā§° āĻ¸ā§āĻ¤ā§ āĻ¸āĻāĻ¯ā§āĻ āĻā§°ā§āĨ¤ āĻ¯āĻĻāĻŋ āĻ¸ā§āĻĨāĻŋā§° āĻā§āĻŽā§āĻŦāĻā§āĻ¯āĻŧ āĻā§āĻˇā§āĻ¤ā§ā§° āĻ¨āĻžāĻĨāĻžāĻā§, āĻ¤ā§āĻ¨ā§āĻ¤ā§ āĻāĻ āĻ§ā§°āĻŖā§° āĻĒā§āĻšā§°ā§° āĻĒā§ā§°āĻāĻžā§ą āĻĒā§āĻĨāĻŋā§ąā§ā§° āĻŦāĻšā§ āĻ āĻžāĻāĻ¤ āĻĻā§āĻāĻž āĻ¯āĻžāĻŦ āĻĒāĻžā§°ā§āĨ¤
Summary : (āĻ¸āĻāĻā§āĻˇāĻŋāĻĒā§āĻ¤ āĻĢāĻ˛āĻžāĻĢāĻ˛)
If Earth lost its magnetic field : āĻ¯āĻĻāĻŋ āĻĒā§āĻĨāĻŋā§ąā§ā§ā§ āĻ¨āĻŋāĻā§° āĻā§āĻŽā§āĻŦāĻā§āĻ¯āĻŧ āĻā§āĻˇā§āĻ¤ā§ā§° āĻšā§ā§°ā§ā§ąāĻžāĻ¯āĻŧ:
- More solar radiation would reach Earth : āĻ āĻ§āĻŋāĻ āĻ¸ā§ā§°ā§āĻ¯ āĻŦāĻŋāĻāĻŋā§°āĻŖ āĻĒā§āĻĨāĻŋā§ąā§āĻ¤ āĻāĻšāĻŋāĻŦ
- Many satellites could be damaged : āĻŦāĻšā§ āĻāĻĒāĻā§ā§°āĻš āĻā§āĻˇāĻ¤āĻŋāĻā§ā§°āĻ¸ā§āĻ¤ āĻš’āĻŦ āĻĒāĻžā§°ā§
- The atmosphere could slowly escape : āĻŦāĻžāĻ¯āĻŧā§āĻŽāĻŖā§āĻĄāĻ˛ āĻ§ā§ā§°ā§ āĻ§ā§ā§°ā§ āĻšā§ā§°āĻžāĻ āĻ¯āĻžāĻŦ āĻĒāĻžā§°ā§
- Technology and climate could be affected : āĻĒā§ā§°āĻ¯ā§āĻā§āĻ¤āĻŋ āĻā§°ā§ āĻāĻ˛āĻŦāĻžāĻ¯āĻŧā§ āĻĒā§ā§°āĻāĻžā§ąāĻŋāĻ¤ āĻš’āĻŦ āĻĒāĻžā§°ā§āĨ¤
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MCQ
Q1. What acts like a protective shield around Earth ? : āĻĒā§āĻĨāĻŋā§ąā§ā§° āĻāĻžā§°āĻŋāĻāĻĢāĻžāĻ˛ā§ āĻ¸ā§ā§°āĻā§āĻˇāĻžāĻŽā§āĻ˛āĻ āĻĸāĻžāĻ˛ āĻšāĻŋāĻāĻžāĻĒā§ āĻāĻŋ āĻāĻžāĻŽ āĻā§°ā§ ?
(a) Atmosphere | āĻŦāĻžāĻ¯āĻŧā§āĻŽāĻŖā§āĻĄāĻ˛ (b) Magnetic field | āĻā§āĻŽā§āĻŦāĻā§āĻ¯āĻŧ āĻā§āĻˇā§āĻ¤ā§ā§° (c) Clouds | āĻŽā§āĻ (d) Ocean | āĻ¸āĻžāĻā§°
Ans: (b) Magnetic field | āĻā§āĻŽā§āĻŦāĻā§āĻ¯āĻŧ āĻā§āĻˇā§āĻ¤ā§ā§°
Explanation: Earth’s magnetic field acts like a shield that protects the planet from harmful solar particles. āĻŦā§āĻ¯āĻžāĻā§āĻ¯āĻž: āĻĒā§āĻĨāĻŋā§ąā§ā§° āĻā§āĻŽā§āĻŦāĻā§āĻ¯āĻŧ āĻā§āĻˇā§āĻ¤ā§ā§°ā§ āĻ¸ā§ā§°ā§āĻ¯ā§° āĻā§āĻˇāĻ¤āĻŋāĻāĻžā§°āĻ āĻāĻŖāĻŋāĻāĻžā§° āĻĒā§°āĻž āĻĒā§āĻĨāĻŋā§ąā§āĻ āĻ¸ā§ā§°āĻā§āĻˇāĻž āĻĻāĻŋāĻ¯āĻŧā§āĨ¤
Q2. What harmful particles come from the Sun ? : āĻ¸ā§ā§°ā§āĻ¯ā§° āĻĒā§°āĻž āĻā§āĻ¨ āĻā§āĻˇāĻ¤āĻŋāĻāĻžā§°āĻ āĻāĻŖāĻŋāĻāĻžāĻŦā§ā§° āĻāĻšā§ ?
(a) Rain particles | āĻŦā§°āĻˇā§āĻŖā§° āĻāĻŖāĻž (b) Solar wind | āĻ¸ā§ā§°ā§āĻ¯ āĻŦāĻ¤āĻžāĻš (c) Ice particles | āĻŦā§°āĻĢ āĻāĻŖāĻž (d) Dust wind | āĻ§ā§āĻ˛āĻŋ āĻŦāĻ¤āĻžāĻš
Ans: (b) Solar wind | āĻ¸ā§ā§°ā§āĻ¯ āĻŦāĻ¤āĻžāĻš
Explanation: Solar wind is a stream of charged particles coming from the Sun. āĻŦā§āĻ¯āĻžāĻā§āĻ¯āĻž: Solar wind āĻš’āĻ˛ āĻ¸ā§ā§°ā§āĻ¯ā§° āĻĒā§°āĻž āĻ
āĻšāĻž āĻāĻ§āĻžāĻ¨āĻ¯ā§āĻā§āĻ¤ āĻāĻŖāĻŋāĻāĻžā§° āĻĒā§ā§°āĻŦāĻžāĻšāĨ¤
Q3. What does Earth’s magnetic field do to solar wind ? | āĻĒā§āĻĨāĻŋā§ąā§ā§° āĻā§āĻŽā§āĻŦāĻā§āĻ¯āĻŧ āĻā§āĻˇā§āĻ¤ā§ā§°ā§ āĻ¸ā§ā§°ā§āĻ¯ āĻŦāĻ¤āĻžāĻšā§° āĻ¸ā§āĻ¤ā§ āĻāĻŋ āĻā§°ā§ ?
(a) Absorbs it | āĻļā§āĻˇāĻŖ āĻā§°ā§ (b) Deflects it | āĻā§ā§°āĻžāĻ āĻĻāĻŋāĻ¯āĻŧā§ (c) Creates it | āĻ¸ā§āĻˇā§āĻāĻŋ āĻā§°ā§ (d) Stops sunlight | āĻ¸ā§ā§°ā§āĻ¯ā§° āĻĒā§āĻšā§° āĻŦāĻ¨ā§āĻ§ āĻā§°ā§
Ans: (b) Deflects it | āĻā§ā§°āĻžāĻ āĻĻāĻŋāĻ¯āĻŧā§
Explanation: The magnetic field deflects harmful charged particles away from Earth. āĻŦā§āĻ¯āĻžāĻā§āĻ¯āĻž: āĻā§āĻŽā§āĻŦāĻā§āĻ¯āĻŧ āĻā§āĻˇā§āĻ¤ā§ā§°ā§ āĻā§āĻˇāĻ¤āĻŋāĻāĻžā§°āĻ āĻāĻŖāĻŋāĻāĻžāĻŦā§ā§° āĻĒā§āĻĨāĻŋā§ąā§ā§° āĻĒā§°āĻž āĻāĻāĻ¤ā§°āĻžāĻ āĻĻāĻŋāĻ¯āĻŧā§āĨ¤
Q4. What could happen without Earth’s magnetic field ? : āĻĒā§āĻĨāĻŋā§ąā§ā§° āĻā§āĻŽā§āĻŦāĻā§āĻ¯āĻŧ āĻā§āĻˇā§āĻ¤ā§ā§° āĻ¨āĻžāĻĨāĻžāĻāĻŋāĻ˛ā§ āĻāĻŋ āĻš’āĻŦ āĻĒāĻžā§°ā§ ?
(a) Less sunlight | āĻāĻŽ āĻ¸ā§ā§°ā§āĻ¯ā§° āĻĒā§āĻšā§° (b) More solar radiation | āĻ āĻ§āĻŋāĻ āĻ¸ā§ā§°ā§āĻ¯ āĻŦāĻŋāĻāĻŋā§°āĻŖ (c) More rain | āĻ āĻ§āĻŋāĻ āĻŦā§°āĻˇā§āĻŖ (d) Less wind | āĻāĻŽ āĻŦāĻ¤āĻžāĻš
Ans: (b) More solar radiation | āĻ
āĻ§āĻŋāĻ āĻ¸ā§ā§°ā§āĻ¯ āĻŦāĻŋāĻāĻŋā§°āĻŖ
Explanation: Without the magnetic shield, solar radiation could reach Earth directly. āĻŦā§āĻ¯āĻžāĻā§āĻ¯āĻž: āĻā§āĻŽā§āĻŦāĻā§āĻ¯āĻŧ āĻĸāĻžāĻ˛ āĻ¨āĻžāĻĨāĻžāĻāĻŋāĻ˛ā§ āĻ¸ā§ā§°ā§āĻ¯ā§° āĻŦāĻŋāĻāĻŋā§°āĻŖ āĻ¸ā§āĻāĻžāĻā§ āĻĒā§āĻĨāĻŋā§ąā§āĻ¤ āĻāĻšāĻŋāĻŦ āĻĒāĻžā§°ā§āĨ¤
Q5. Which technology could be damaged by solar particles ? : āĻ¸ā§ā§°ā§āĻ¯ā§° āĻāĻŖāĻŋāĻāĻžāĻŦā§ā§°ā§ āĻā§āĻ¨ āĻĒā§ā§°āĻ¯ā§āĻā§āĻ¤āĻŋāĻ āĻā§āĻˇāĻ¤āĻŋ āĻā§°āĻŋāĻŦ āĻĒāĻžā§°ā§ ?
(a) Satellites | āĻāĻĒāĻā§ā§°āĻš (b) Trees | āĻāĻ (c) Mountains | āĻĒāĻžāĻšāĻžā§° (d) Rivers | āĻ¨āĻĻā§
Ans: (a) Satellites | āĻāĻĒāĻā§ā§°āĻš
Explanation: Solar particles can damage satellites and electronic systems. āĻŦā§āĻ¯āĻžāĻā§āĻ¯āĻž: āĻ¸ā§ā§°ā§āĻ¯ā§° āĻāĻŖāĻŋāĻāĻžāĻŦā§ā§°ā§ āĻāĻĒāĻā§ā§°āĻš āĻā§°ā§ āĻāĻ˛ā§āĻā§āĻā§ā§°āĻ¨āĻŋāĻ āĻŦā§āĻ¯ā§ąāĻ¸ā§āĻĨāĻžāĻ āĻā§āĻˇāĻ¤āĻŋ āĻā§°āĻŋāĻŦ āĻĒāĻžā§°ā§āĨ¤
Q6. What natural light phenomenon is linked to Earth’s magnetic field ? : āĻĒā§āĻĨāĻŋā§ąā§ā§° āĻā§āĻŽā§āĻŦāĻā§āĻ¯āĻŧ āĻā§āĻˇā§āĻ¤ā§ā§°ā§° āĻ¸ā§āĻ¤ā§ āĻā§āĻ¨ āĻĒā§āĻšā§°ā§° āĻĒā§ā§°āĻā§āĻ¤āĻŋ āĻāĻĄāĻŧāĻŋāĻ¤ ?
(a) Rainbow | ā§°āĻžāĻŽāĻ§ā§āĻ¨ā§ (b) Aurora | āĻ āĻ°ā§ā§°āĻž (c) Lightning | āĻŦāĻā§ā§°āĻĒāĻžāĻ¤ (d) Sunset | āĻ¸ā§ā§°ā§āĻ¯āĻžāĻ¸ā§āĻ¤
Ans: (b) Aurora | āĻ
āĻ°ā§ā§°āĻž
Explanation: Auroras occur when solar particles interact with Earth’s magnetic field. āĻŦā§āĻ¯āĻžāĻā§āĻ¯āĻž: āĻ¸ā§ā§°ā§āĻ¯ā§° āĻāĻŖāĻŋāĻāĻžāĻŦā§ā§° āĻā§āĻŽā§āĻŦāĻā§āĻ¯āĻŧ āĻā§āĻˇā§āĻ¤ā§ā§°ā§° āĻ¸ā§āĻ¤ā§ āĻ¸āĻāĻ¯ā§āĻ āĻā§°āĻŋāĻ˛ā§ āĻ
āĻ°ā§ā§°āĻž āĻ¸ā§āĻˇā§āĻāĻŋ āĻšāĻ¯āĻŧāĨ¤
Q7. Without a magnetic field, Earth’s atmosphere could _____. | āĻā§āĻŽā§āĻŦāĻā§āĻ¯āĻŧ āĻā§āĻˇā§āĻ¤ā§ā§° āĻ¨āĻžāĻĨāĻžāĻāĻŋāĻ˛ā§ āĻĒā§āĻĨāĻŋā§ąā§ā§° āĻŦāĻžāĻ¯āĻŧā§āĻŽāĻŖā§āĻĄāĻ˛ _____.
(a) Become colder | āĻ āĻ§āĻŋāĻ āĻ āĻžāĻŖā§āĻĄāĻž āĻš’āĻŦ (b) Slowly escape | āĻ§ā§ā§°ā§ āĻ§ā§ā§°ā§ āĻšā§ā§°āĻžāĻ āĻ¯āĻžāĻŦ (c) Become thicker | āĻ āĻ§āĻŋāĻ āĻĄāĻžāĻ āĻš’āĻŦ (d) Turn into water | āĻĒāĻžāĻ¨ā§ āĻš’āĻŦ
Ans: (b) Slowly escape | āĻ§ā§ā§°ā§ āĻ§ā§ā§°ā§ āĻšā§ā§°āĻžāĻ āĻ¯āĻžāĻŦ
Explanation: Solar wind could gradually strip away the atmosphere. āĻŦā§āĻ¯āĻžāĻā§āĻ¯āĻž: āĻ¸ā§ā§°ā§āĻ¯ āĻŦāĻ¤āĻžāĻšā§ āĻ§ā§āĻ°ā§ āĻ§ā§āĻ°ā§ āĻŦāĻžāĻ¯āĻŧā§āĻŽāĻŖā§āĻĄāĻ˛ āĻāĻāĻ¤ā§°āĻžāĻ āĻĻāĻŋāĻŦ āĻĒāĻžā§°ā§āĨ¤
Q8. What does the magnetic field protect besides Earth ? : āĻĒā§āĻĨāĻŋā§ąā§ā§° āĻāĻĒā§°āĻŋāĻ āĻā§āĻŽā§āĻŦāĻā§āĻ¯āĻŧ āĻā§āĻˇā§āĻ¤ā§ā§°ā§ āĻāĻŋ āĻ¸ā§ā§°āĻā§āĻˇāĻž āĻĻāĻŋāĻ¯āĻŧā§ ?
(a) Satellites and electronics | āĻāĻĒāĻā§ā§°āĻš āĻā§°ā§ āĻāĻ˛ā§āĻā§āĻā§ā§°āĻ¨āĻŋāĻ āĻ¯āĻ¨ā§āĻ¤ā§ā§° (b) Rivers | āĻ¨āĻĻā§ (c) Forests | āĻŦāĻ¨ (d) Mountains | āĻĒāĻžāĻšāĻžā§°
Ans: (a) Satellites and electronics | āĻāĻĒāĻā§ā§°āĻš āĻā§°ā§ āĻāĻ˛ā§āĻā§āĻā§ā§°āĻ¨āĻŋāĻ āĻ¯āĻ¨ā§āĻ¤ā§ā§°
Explanation: Magnetic fields help protect satellites and technology from solar particles. āĻŦā§āĻ¯āĻžāĻā§āĻ¯āĻž: āĻā§āĻŽā§āĻŦāĻā§āĻ¯āĻŧ āĻā§āĻˇā§āĻ¤ā§ā§°ā§ āĻ¸ā§ā§°ā§āĻ¯ā§° āĻāĻŖāĻŋāĻāĻžā§° āĻĒā§°āĻž āĻāĻĒāĻā§ā§°āĻš āĻā§°ā§ āĻĒā§ā§°āĻ¯ā§āĻā§āĻ¤āĻŋāĻ āĻ¸ā§ā§°āĻā§āĻˇāĻž āĻĻāĻŋāĻ¯āĻŧā§āĨ¤
Q9. If the magnetic field disappeared, auroras would _____. | āĻā§āĻŽā§āĻŦāĻā§āĻ¯āĻŧ āĻā§āĻˇā§āĻ¤ā§ā§° āĻ¨āĻžāĻĨāĻžāĻāĻŋāĻ˛ā§ āĻ āĻ°ā§ā§°āĻž _____.
(a) Stop completely | āĻ¸āĻŽā§āĻĒā§ā§°ā§āĻŖ āĻŦāĻ¨ā§āĻ§ āĻš’āĻŦ (b) Appear everywhere | āĻ¸āĻāĻ˛ā§ āĻ āĻžāĻāĻ¤ āĻĻā§āĻāĻž āĻ¯āĻžāĻŦ (c) Turn red | ā§°āĻāĻž āĻš’āĻŦ (d) Only appear in space | āĻā§ā§ąāĻ˛ āĻŽāĻšāĻžāĻāĻžāĻļāĻ¤ āĻĻā§āĻāĻž āĻ¯āĻžāĻŦ
Ans: (b) Appear everywhere | āĻ¸āĻāĻ˛ā§ āĻ āĻžāĻāĻ¤ āĻĻā§āĻāĻž āĻ¯āĻžāĻŦ
Explanation: Without a stable magnetic shield, auroras could appear more widely across Earth. āĻŦā§āĻ¯āĻžāĻā§āĻ¯āĻž: āĻ¸ā§āĻĨāĻŋā§° āĻā§āĻŽā§āĻŦāĻā§āĻ¯āĻŧ āĻā§āĻˇā§āĻ¤ā§ā§° āĻ¨āĻžāĻĨāĻžāĻāĻŋāĻ˛ā§ āĻ
āĻ°ā§ā§°āĻž āĻĒā§āĻĨāĻŋā§ąā§ā§° āĻŦāĻšā§ āĻ āĻžāĻāĻ¤ āĻĻā§āĻāĻž āĻ¯āĻžāĻŦ āĻĒāĻžā§°ā§āĨ¤
Q10. Why is Earth’s magnetic field important ? : āĻĒā§āĻĨāĻŋā§ąā§ā§° āĻā§āĻŽā§āĻŦāĻā§āĻ¯āĻŧ āĻā§āĻˇā§āĻ¤ā§ā§° āĻāĻŋāĻ¯āĻŧ āĻā§ā§°ā§āĻ¤ā§āĻŦāĻĒā§ā§°ā§āĻŖ ?
(a) It produces rain | āĻŦā§°āĻˇā§āĻŖ āĻ¸ā§āĻˇā§āĻāĻŋ āĻā§°ā§ (b) It protects Earth from solar radiation | āĻ¸ā§ā§°ā§āĻ¯ā§° āĻŦāĻŋāĻāĻŋā§°āĻŖā§° āĻĒā§°āĻž āĻ¸ā§ā§°āĻā§āĻˇāĻž āĻĻāĻŋāĻ¯āĻŧā§ (c) It makes gravity | āĻŽāĻžāĻ§ā§āĻ¯āĻžāĻāĻ°ā§āĻˇāĻŖ āĻ¸ā§āĻˇā§āĻāĻŋ āĻā§°ā§ (d) It creates oceans | āĻ¸āĻžāĻā§° āĻ¸ā§āĻˇā§āĻāĻŋ āĻā§°ā§
Ans: (b) It protects Earth from solar radiation :| āĻ¸ā§ā§°ā§āĻ¯ā§° āĻŦāĻŋāĻāĻŋā§°āĻŖā§° āĻĒā§°āĻž āĻ¸ā§ā§°āĻā§āĻˇāĻž āĻĻāĻŋāĻ¯āĻŧā§
Explanation: The magnetic field acts as a protective shield against harmful solar radiation and particles. āĻŦā§āĻ¯āĻžāĻā§āĻ¯āĻž: āĻā§āĻŽā§āĻŦāĻā§āĻ¯āĻŧ āĻā§āĻˇā§āĻ¤ā§ā§°ā§ āĻā§āĻˇāĻ¤āĻŋāĻāĻžā§°āĻ āĻ¸ā§ā§°ā§āĻ¯ āĻŦāĻŋāĻāĻŋā§°āĻŖ āĻā§°ā§ āĻāĻŖāĻŋāĻāĻžā§° āĻĒā§°āĻž āĻĒā§āĻĨāĻŋā§ąā§āĻ āĻ¸ā§ā§°āĻā§āĻˇāĻž āĻĻāĻŋāĻ¯āĻŧā§āĨ¤