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

What causes Earth’s magnetic field?

3 / 10

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

4 / 10

The region of Earth’s magnetosphere where charged particles are trapped by the magnetic field is called the:

5 / 10

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

6 / 10

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

7 / 10

The study of how the Earth’s magnetic field has changed over time is known as:

8 / 10

Which type of rock is typically associated with strong magnetic anomalies due to its high iron content?

9 / 10

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

10 / 10

What causes rocks to become magnetized?

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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

Which of the following is a common application of magnetic surveys in mineral exploration?

2 / 10

What is the primary advantage of using a fluxgate magnetometer in magnetic surveys?

3 / 10

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

4 / 10

Which of the following can cause a magnetic anomaly?

5 / 10

What is the primary objective of a ground magnetic survey?

6 / 10

How can magnetic methods help in identifying fault zones?

7 / 10

What is the significance of magnetic declination in magnetic surveys?

8 / 10

How can magnetic methods be used in environmental studies?

9 / 10

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

10 / 10

How does palaeomagnetism contribute to our understanding of plate tectonics?

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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.