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

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

2 / 10

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

3 / 10

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

4 / 10

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

5 / 10

Which of the following materials is not commonly used in the construction of a magnetometer?

6 / 10

What is the term for the phenomenon where a magnetic field induces an electric current in a conductor?

7 / 10

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

8 / 10

What causes rocks to become magnetized?

9 / 10

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

10 / 10

Which instrument is used to measure the strength and direction of the Earth’s magnetic field?

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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 do scientists use paleomagnetic data to study plate tectonics?

2 / 10

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

3 / 10

What is the primary purpose of magnetic methods in geophysics?

4 / 10

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

5 / 10

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

6 / 10

What is the primary advantage of using magnetic surveys in unexplored regions?

7 / 10

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

8 / 10

Which of the following can cause a magnetic anomaly?

9 / 10

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

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.