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Consider the following statements.
1. The Earth's magnetic field is attributed to a dynamo effect of circulating electric current within earth.
2. Interaction of the terrestrial magnetic field with particles from the solar wind sets up the conditions for the aurora phenomena near the poles.
2. Interaction of the terrestrial magnetic field with particles from the solar wind sets up the conditions for the aurora phenomena near the poles.
Which of the above is/are correct?
- a)1 only
- b)2 only
- c)Both 1 and 2
- d)None
Correct answer is option 'C'. Can you explain this answer?
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Verified Answer
Consider the following statements.1. The Earth's magnetic field is...
Justification: The Earth's magnetic field is similar to that of a bar magnet tilted 11 degrees from the spin axis of the Earth. The problem with that picture is that the Curie temperature of iron is about 770 C . The Earth's core is hotter than that and therefore not magnetic.
Statement 1: The Earth's magnetic field is attributed to a dynamo effect of circulating electric current, but it is not constant in direction. Rock specimens of different age in similar locations have different directions of permanent magnetization.
Although the details of the dynamo effect are not known in detail, the rotation of the Earth plays a part in generating the currents which are presumed to be the source of the magnetic field.
The groundbreaking agreement, the Addis Ababa Action Agenda, provided a foundation for implementing the global sustainable development agenda (SDGs).
Financing is considered the linchpin for the success of the new sustainable development agenda, which will be driven by the implementation of 17 sustainable development goals.
In support of implementation of the sustainable development goals, the Addis Ababa Action Agenda contains more than 100 concretemeasures. It addresses all sources of finance, and covers cooperation on a range of issues including technology, science, innovation, trade and capacity building.
Statement 2: The Aurora is an incredible light show caused by collisions between electrically charged particles released from the sun that enter the earth's atmosphere and collide with gases such as oxygen and nitrogen.
The lights are seen around the magnetic poles of the northern and southern hemispheres.
Q Source: Improvisation: SETA: Q44: UPSC CAPF 2016
Statement 1: The Earth's magnetic field is attributed to a dynamo effect of circulating electric current, but it is not constant in direction. Rock specimens of different age in similar locations have different directions of permanent magnetization.
Although the details of the dynamo effect are not known in detail, the rotation of the Earth plays a part in generating the currents which are presumed to be the source of the magnetic field.
The groundbreaking agreement, the Addis Ababa Action Agenda, provided a foundation for implementing the global sustainable development agenda (SDGs).
Financing is considered the linchpin for the success of the new sustainable development agenda, which will be driven by the implementation of 17 sustainable development goals.
In support of implementation of the sustainable development goals, the Addis Ababa Action Agenda contains more than 100 concretemeasures. It addresses all sources of finance, and covers cooperation on a range of issues including technology, science, innovation, trade and capacity building.
Statement 2: The Aurora is an incredible light show caused by collisions between electrically charged particles released from the sun that enter the earth's atmosphere and collide with gases such as oxygen and nitrogen.
The lights are seen around the magnetic poles of the northern and southern hemispheres.
Q Source: Improvisation: SETA: Q44: UPSC CAPF 2016
Most Upvoted Answer
Consider the following statements.1. The Earth's magnetic field is...
Earth's Magnetic Field:
- The Earth's magnetic field is indeed attributed to a dynamo effect caused by the movement of molten iron and nickel in the outer core of the Earth, creating electric currents.
- These electric currents generate a magnetic field that surrounds the Earth and acts like a giant magnet, with north and south poles.
Interaction with Solar Wind:
- The terrestrial magnetic field interacts with the solar wind, which is a stream of charged particles flowing from the Sun.
- When these solar wind particles interact with the Earth's magnetic field, they are directed towards the polar regions.
- This interaction sets up the conditions for the aurora phenomena, where the particles collide with gases in the Earth's atmosphere, producing colorful light displays known as the auroras.
Correct Answer:
- Both statements 1 and 2 are correct.
- Statement 1 explains the origin of the Earth's magnetic field, while statement 2 describes the interaction of this magnetic field with solar wind particles to produce auroras near the poles.
- The Earth's magnetic field is indeed attributed to a dynamo effect caused by the movement of molten iron and nickel in the outer core of the Earth, creating electric currents.
- These electric currents generate a magnetic field that surrounds the Earth and acts like a giant magnet, with north and south poles.
Interaction with Solar Wind:
- The terrestrial magnetic field interacts with the solar wind, which is a stream of charged particles flowing from the Sun.
- When these solar wind particles interact with the Earth's magnetic field, they are directed towards the polar regions.
- This interaction sets up the conditions for the aurora phenomena, where the particles collide with gases in the Earth's atmosphere, producing colorful light displays known as the auroras.
Correct Answer:
- Both statements 1 and 2 are correct.
- Statement 1 explains the origin of the Earth's magnetic field, while statement 2 describes the interaction of this magnetic field with solar wind particles to produce auroras near the poles.
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Consider the following statements.1. The Earth's magnetic field is attributed to a dynamo effect of circulating electric current within earth.2. Interaction of the terrestrial magnetic field with particles from the solar wind sets up the conditions for the aurora phenomena near the poles.Which of the above is/are correct?a)1 onlyb)2 onlyc)Both 1 and 2d)NoneCorrect answer is option 'C'. Can you explain this answer?
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