Geography ยท 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 name of the Lagrangian point located between the Earth and the Moon?

  1. L1

  2. L2

  3. L3

  4. L4

  5. L5
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

L1 is the Lagrangian point located between the Earth and the Moon, where the gravitational forces of the two bodies cancel each other out.

Multiple choice

Which Lagrangian point is located directly opposite to the Sun, as seen from the Earth?

  1. L1

  2. L2

  3. L3

  4. L4

  5. L5
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

L3 is the Lagrangian point located directly opposite to the Sun, as seen from the Earth. It is also known as the anti-Sun point.

Multiple choice

Which Lagrangian point is located at the vertices of an equilateral triangle formed by the Earth, the Sun, and the spacecraft?

  1. L1

  2. L2

  3. L3

  4. L4

  5. L5
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

L4 and L5 are located at the vertices of an equilateral triangle formed by the Earth, the Sun, and the spacecraft.

Multiple choice

What is the name of the Lagrangian point that is located behind the larger body, in the direction opposite to its motion?

  1. L1

  2. L2

  3. L3

  4. L4

  5. L5
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

L2 is the Lagrangian point that is located behind the larger body, in the direction opposite to its motion.

Multiple choice

What is the name of the Lagrangian point that is located in the same direction as the larger body's motion?

  1. L1

  2. L2

  3. L3

  4. L4

  5. L5
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

L5 is the Lagrangian point that is located in the same direction as the larger body's motion.

Multiple choice

Which Lagrangian point is located at the vertices of an equilateral triangle formed by the Sun, the Earth, and the spacecraft?

  1. L1

  2. L2

  3. L3

  4. L4

  5. L5
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

L4 and L5 are located at the vertices of an equilateral triangle formed by the Sun, the Earth, and the spacecraft.

Multiple choice

What is the name of the Lagrangian point that is located at the center of the equilateral triangle formed by the Earth, the Sun, and the spacecraft?

  1. L1

  2. L2

  3. L3

  4. L4

  5. L5
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

L3 is the Lagrangian point that is located at the center of the equilateral triangle formed by the Earth, the Sun, and the spacecraft.

Multiple choice

What is the name of the Lagrangian point that is located in the same direction as the smaller body's motion?

  1. L1

  2. L2

  3. L3

  4. L4

  5. L5
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

L4 is the Lagrangian point that is located in the same direction as the smaller body's motion.

Multiple choice

What is the name of the Lagrangian point that is located at the vertices of an equilateral triangle formed by the Sun, the smaller body, and the spacecraft?

  1. L1

  2. L2

  3. L3

  4. L4

  5. L5
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

L4 and L5 are located at the vertices of an equilateral triangle formed by the Sun, the smaller body, and the spacecraft.

Multiple choice

What is the period of the precession of the equinoxes?

  1. 25,800 years

  2. 26,000 years

  3. 26,200 years

  4. 26,400 years
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The period of the precession of the equinoxes is approximately 25,800 years.

Multiple choice

What is the period of the precession of the equinoxes?

  1. 25,800 years

  2. 26,000 years

  3. 26,200 years

  4. 26,400 years
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The period of the precession of the equinoxes is 25,800 years.

Multiple choice

What is the distance between the two LIGO detectors?

  1. 3,000 kilometers

  2. 4,000 kilometers

  3. 5,000 kilometers

  4. 6,000 kilometers
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The two LIGO detectors are located 3,000 kilometers apart, one in Hanford, Washington, and the other in Livingston, Louisiana.

Multiple choice

What is the sensitivity of Advanced LIGO?

  1. 10^-23 meters

  2. 10^-22 meters

  3. 10^-21 meters

  4. 10^-20 meters
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Advanced LIGO is sensitive to gravitational waves with a strain amplitude of 10^-22 meters.

Multiple choice

What is the estimated number of pieces of orbital debris larger than 10 centimeters in Earth's orbit?

  1. 100,000

  2. 1 million

  3. 10 million

  4. 100 million
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

It is estimated that there are approximately 100,000 pieces of orbital debris larger than 10 centimeters in Earth's orbit.

Multiple choice

What is the period of the Earth's mean anomaly?

  1. 365.242 days

  2. 365.256 days

  3. 365.263 days

  4. 365.270 days
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The period of the Earth's mean anomaly is 365.242 days, which is the time it takes for the Earth to complete one orbit around the Sun.