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

How can magnetic methods be used in archaeological studies?

2 / 10

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

3 / 10

What causes rocks to become magnetized?

4 / 10

Which of the following is not a factor affecting the strength of Earth’s magnetic field?

5 / 10

What causes Earth’s magnetic field?

6 / 10

What is the primary mineral responsible for recording Earth’s magnetic field in rocks?

7 / 10

Which type of rocks often preserves the best record of Earth’s ancient magnetic field?

8 / 10

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

9 / 10

What is the name of the boundary between Earth’s core and mantle, where the magnetic field is generated?

10 / 10

What is the term for the deviation between true north and magnetic north?

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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 geological feature can create a negative magnetic anomaly?

2 / 10

Which of the following can cause a magnetic anomaly?

3 / 10

What is the primary objective of a ground magnetic survey?

4 / 10

What is the significance of magnetic declination in magnetic surveys?

5 / 10

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

6 / 10

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

7 / 10

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

8 / 10

How do scientists use paleomagnetic data to study plate tectonics?

9 / 10

What does the term “Paleo intensity” refer to in Palaeomagnetism?

10 / 10

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

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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.