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 softskills communication

Common knowledge to anyone who studies science, the earth ___ on its own axis once every twenty-four hours.

  1. revolves

  2. revolve

  3. None of the above

  4. Both a and b
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

To solve this question, the user needs to know the definition of the terms "revolve" and "rotate" and their usage in the context of astronomy.

The correct answer is:

The Answer is: A

Option A, "revolves," is the correct answer. The sentence is describing the Earth's daily motion around its own axis, which is known as rotation. The verb that describes the Earth's rotation is "revolves." Therefore, option A is the correct choice.

Option B, "revolve," is incorrect. The verb "revolve" describes a celestial body's movement around another body in space. For example, the Earth revolves around the Sun. In this sentence, the Earth's motion around its own axis is being described, not its motion around another body. Therefore, option B is incorrect.

Option C, "None of the above," is incorrect. Option A is the correct answer, and option B is an incorrect answer. Therefore, option C cannot be the correct choice.

Option D, "Both a and b," is incorrect. While option A is the correct answer, option B is not a correct answer. Therefore, option D cannot be the correct choice.

Multiple choice softskills leadership

elliptical

  1. elliptic

  2. severely critical

  3. capricious happening

  4. point or time at which the sun is farthest from the equator
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Elliptical means relating to or having the shape of an ellipse, or describes language with omitted words (ellipsis). The distractors (mordant, capricious, solstice) define unrelated adjectives.

Multiple choice technology

Geodetic survey has been applied if the field of the survey should be greater than

  1. 150Km^2

  2. 200Km^2

  3. 250km^2

  4. 300Km^2
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Geodetic surveying methods are required when the survey area exceeds 250 square kilometers due to the curvature of the Earth becoming significant. For areas smaller than this, plane surveying assumptions can be used without meaningful error. This threshold balances practical surveying needs with accuracy requirements.

Multiple choice technology databases

Which of the following describes the model used by the Geodetic Extender?

  1. Flat earth

  2. E-D square

  3. Trapezoidal

  4. Round Earth
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The DB2 Geodetic Extender uses a Round Earth model (spherical model) for spatial calculations rather than flat-earth approximations. This is essential for accurate geographic and geodetic computations over long distances where Earth's curvature matters. Geodetic coordinate systems account for the Earth's spherical shape, unlike planar projections that distort distance and area measurements.

Multiple choice technology embedded technologies

A location consists of the following:

  1. latitude

  2. longitude

  3. UTC timestamp

  4. Information on altitude, speed, and bearing
Reveal answer Fill a bubble to check yourself
A,B,C,D Correct answer
Explanation

Android's Location object contains latitude and longitude (position), timestamp (when the fix was recorded in UTC), and optionally altitude (height above sea level), speed (velocity over ground), and bearing (direction of travel). All are standard components of location data from GPS or network providers.

Multiple choice technology

Lines of latitude

  1. go through the poles

  2. all have the same circumference

  3. are "parallel" to the equator

  4. range from 180 degrees to -180 degrees
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Lines of latitude (parallels) run east-west around the Earth and are always parallel to the equator. Unlike longitude lines, latitude lines never converge and their circumference decreases as you move toward the poles (so B is wrong). Latitude values range from 0° at the equator to 90°N/S at the poles, not 180° (so D is wrong), and only longitude lines pass through the poles (so A is wrong).

Multiple choice

Between which of the following longitudes is India located?

  1. 680 25'E to 970 6'E

  2. 670 30'E to 970 30'E

  3. 660 15'E to 970 7'E

  4. 680 7'E to 970 25'E
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

India extends from approximately 68°7'E in Gujarat to 97°25'E in Arunachal Pradesh. This longitudinal extent of about 29 degrees places India entirely in the eastern hemisphere. The standard range is 68°7'E to 97°25'E, which matches option D.

Multiple choice

Directions: Choose the appropriate answer from the options given below:

During the revolution around the sun, the point of earth which is farthest from the sun is known as

  1. aphelion

  2. perihelion

  3. comelion

  4. sonatelion

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Aphelion is the point in Earth's elliptical orbit where it is farthest from the Sun (approximately 152 million km). This occurs around July 4th each year. Perihelion is the opposite point where Earth is closest to the Sun (around 147 million km), occurring near January 3rd. The terms 'comelion' and 'sonatelion' are not valid astronomical terms.

Multiple choice

Perihelion is:

  1. The point in earth's orbit which is nearest to the sun

  2. The point in earth's revolution round the earth

  3. The path of moon's revolution round the earth

  4. The path of earth's revolution round the sun
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Perihelion is the point in Earth's orbit where it is closest to the Sun, occurring around January 3rd each year. Aphelion is the opposite point when Earth is farthest from the Sun.

Multiple choice

The imaginary lines drawn out on the global map, from poles to poles and perpendicular to the equator are called

  1. latitudes

  2. tropics

  3. longitudes

  4. meridians
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Meridians are imaginary lines on the Earth's surface that run from the North Pole to the South Pole. They are perpendicular to the equator and are also known as lines of longitude. Latitudes run parallel to the equator (east-west), while meridians run north-south.

Multiple choice

If a stone is thrown parallel to the surface of the earth, its trajectory will be ______.

  1. a parabola

  2. a curve

  3. parallel to the earth

  4. perpendicular to the earth
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

When a stone is thrown horizontally (parallel to Earth's surface), it follows projectile motion under gravity. The horizontal component of velocity remains constant (ignoring air resistance), while the vertical component follows accelerated motion due to gravity. The combination of these two perpendicular motions produces a parabolic trajectory.

Multiple choice

Nautical mile is a unit of distance used in

  1. astronomy

  2. navigation

  3. road mile

  4. measuring the bounaries of a nation
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Nautical mile is a unit of distance equal to 1.852 km, specifically used in maritime and aviation navigation. It is NOT used in astronomy (parsecs and light years are used), not for road distances (km or miles are used), and not specifically for measuring national boundaries.