Magnetic Methods

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Quiz on Magnetic Methods

 

You have to face 10 multiple-choice questions each carrying 1 mark. Each question has only one correct answer out of 4 options. Answering all the questions is not mandatory. The quiz will be auto submitted after the timer stops.

 

Total no. of questions: 10
Full marks: 10
Time: 10 Minutes

 

1 / 10

What is the term for a line on a magnetic map that connects points of equal magnetic declination?

2 / 10

Which instrument is commonly used to measure changes in the Earth’s magnetic field?

3 / 10

The study of the behaviour and effects of magnetic fields in the Earth’s upper atmosphere is known as:

4 / 10

The region where the Earth’s magnetic field lines converge is called the:

5 / 10

In what type of rocks can paleo magnetism provide evidence of past continental positions?

6 / 10

What unit is used to measure the strength of a magnetic field?

7 / 10

What is the name of the instrument used to measure the magnetic properties of rocks in paleomagnetic studies?

8 / 10

The lines connecting points of zero magnetic dip on a magnetic map is known as

9 / 10

What is the term for the angle between the direction of magnetization in a rock and the horizontal plane?

10 / 10

Which of the following is a common method used to date rocks in paleomagnetic studies?

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Advanced Quiz on Magnetic Methods

 

You have to face 10 multiple-choice questions each carrying 1 mark. Each question has only one correct answer out of 4 options. Answering all the questions is not mandatory. The quiz will be auto submitted after the timer stops.

 

Total no. of questions: 10
Full marks: 10
Time: 10 Minutes

 

1 / 10

How can magnetic methods be used to study ancient human activities?

2 / 10

How does palaeomagnetism contribute to our understanding of plate tectonics?

3 / 10

What does the term “magnetic susceptibility” refer to in geophysics?

4 / 10

What causes the auroras (Northern and Southern Lights) in Earth’s atmosphere?

5 / 10

What is the Curie temperature in the context of magnetic methods in geophysics?

6 / 10

How can magnetic methods be used in environmental studies?

7 / 10

How do scientists use paleo magnetism to study the past behaviour of the Earth’s magnetic field?

8 / 10

What is the role of a base station in a magnetic survey?

9 / 10

What is the primary advantage of using aeromagnetic surveys in geophysics?

10 / 10

Which phenomenon occurs when the magnetic minerals in a rock align with the current magnetic field upon cooling below the Curie temperature?

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Introduction

Magnetic methods are geophysical techniques used to study variations in the Earth’s magnetic field caused by the magnetic properties of rocks and minerals. These methods help scientists locate valuable mineral deposits, map geological structures, and study archaeological sites. Using instruments called magnetometers, magnetic surveys measure anomalies in the magnetic field, which indicate the presence of different rock types or buried objects. Non-invasive and efficient, magnetic methods are widely used in mineral exploration, environmental investigations, and even in detecting underground utilities. They provide critical insights into the Earth’s subsurface, helping us unlock its hidden features and resources.