Geography · Physics

Geodesy and Celestial Mechanics

1,049 Questions

Geodesy and celestial mechanics questions explore Earth measurements, great circles, and planetary motions. These concepts form a crucial part of physical geography and astronomy in competitive exams. Practice these questions to grasp longitudinal and latitudinal calculations.

Longitude and latitude calculationsGreat circle conceptEarths axial precessionLagrangian pointsAtmosphere boundary

Geodesy and Celestial Mechanics Questions

Multiple choice

What is the International Date Line?

  1. An imaginary line that runs through the Pacific Ocean.

  2. A line that separates the Northern Hemisphere from the Southern Hemisphere.

  3. A line that separates the Eastern Hemisphere from the Western Hemisphere.

  4. None of the above.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The International Date Line is an imaginary line that runs through the Pacific Ocean. When crossing this line from east to west, you gain a day; when crossing from west to east, you lose a day.

Multiple choice

What is the southernmost latitude at which permafrost can be found?

  1. 45°N

  2. 60°N

  3. 75°N

  4. 90°N
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Permafrost can be found as far south as 45°N in some areas of North America and Asia.

Multiple choice

What is the declination of a magnetic compass?

  1. The angle between the magnetic north pole and the geographic north pole.

  2. The angle between the magnetic south pole and the geographic south pole.

  3. The angle between the magnetic north pole and the true north pole.

  4. The angle between the magnetic south pole and the true south pole.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The declination of a magnetic compass is the angle between the magnetic north pole and the geographic north pole.

Multiple choice

What was the line of demarcation established by the Treaty of Tordesillas?

  1. A line running from pole to pole, 370 leagues west of the Cape Verde Islands.

  2. A line running from pole to pole, 180 degrees west of the Prime Meridian.

  3. A line running from the equator to the North Pole, 90 degrees west of the Prime Meridian.

  4. A line running from the equator to the South Pole, 90 degrees east of the Prime Meridian.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The line of demarcation established by the Treaty of Tordesillas was a line running from pole to pole, 370 leagues west of the Cape Verde Islands.

Multiple choice

What percentage of the Earth's land surface is covered by permafrost?

  1. 20%

  2. 25%

  3. 30%

  4. 35%
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Approximately 25% of the Earth's land surface is covered by permafrost.

Multiple choice

What is the Prime Meridian?

  1. The line of longitude that runs through Greenwich, England.

  2. The line of longitude that runs through the center of the Earth.

  3. The line of longitude that runs through the North Pole.

  4. The line of longitude that runs through the South Pole.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The Prime Meridian is the line of longitude that runs through Greenwich, England. It is used as the reference point for measuring longitude, and all other longitudes are measured east or west of the Prime Meridian.

Multiple choice

What is the term for the imaginary lines that run parallel to the equator and measure distance north or south of it?

  1. Longitude

  2. Latitude

  3. Meridians

  4. Parallels
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Latitude lines run parallel to the equator and measure distance north or south of it.

Multiple choice

What is the term for the imaginary line that connects the North and South Poles and divides the Earth into the Eastern and Western Hemispheres?

  1. Equator

  2. Prime Meridian

  3. Tropic of Cancer

  4. Arctic Circle
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The Prime Meridian is the imaginary line that runs through Greenwich, England, and divides the Earth into the Eastern and Western Hemispheres.

Multiple choice

What is the term for the imaginary line that divides the Earth into the Northern and Southern Hemispheres?

  1. Equator

  2. Prime Meridian

  3. Tropic of Cancer

  4. Arctic Circle
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The Equator is the imaginary line that divides the Earth into the Northern and Southern Hemispheres.

Multiple choice

Which of the following is an example of a posteriori knowledge?

  1. The sky is blue.

  2. 2 + 2 = 4.

  3. The Earth revolves around the Sun.

  4. Paris is the capital of France.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A posteriori knowledge is knowledge that is acquired through experience. The fact that the sky is blue is an example of a posteriori knowledge.

Multiple choice

The position of the sun at noon is used to determine:

  1. Latitude

  2. Longitude

  3. Both latitude and longitude

  4. Neither latitude nor longitude
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The position of the sun at noon can be used to determine latitude, but not longitude.

Multiple choice

The position of the stars is used to determine:

  1. Latitude

  2. Longitude

  3. Both latitude and longitude

  4. Neither latitude nor longitude
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The position of the stars can be used to determine both latitude and longitude.

Multiple choice

The method of determining latitude and longitude using the position of the sun at noon is called:

  1. Meridian altitude method

  2. Polaris method

  3. Lunar distance method

  4. Star altitude method
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The method of determining latitude and longitude using the position of the sun at noon is called the meridian altitude method.

Multiple choice

The method of determining latitude and longitude using the position of the stars is called:

  1. Meridian altitude method

  2. Polaris method

  3. Lunar distance method

  4. Star altitude method
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The method of determining latitude and longitude using the position of the stars is called the star altitude method.

Multiple choice

The method of determining latitude and longitude using the distance between the moon and a star is called:

  1. Meridian altitude method

  2. Polaris method

  3. Lunar distance method

  4. Star altitude method
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The method of determining latitude and longitude using the distance between the moon and a star is called the lunar distance method.