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 physics properties of a magnetic field earth - a gigantic magnet magnetic field of earth introduction to magnetic field and magnetic flux

The place where the angle of dip is 90 are known as

  1. Geographical poles of the earth

  2. Magnetic equator

  3. Magnetic poles of the earth

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

Angle of dip at a point on earth is the angle between earth's magnetic field at given point and the horizontal line of magnetic meridian.

Since the magnetic lines of force emerge and terminate at the poles of Earth, the magnetic lines of force at the poles are perpendicular to the surface there. Hence the angle of dip is $90^{\circ}$.

Multiple choice physics properties of a magnetic field earth - a gigantic magnet magnetic field of earth introduction to magnetic field and magnetic flux

The north pole of earth's magnet is near

  1. Geographic north

  2. At the center of earth

  3. Geographic south

  4. In any direction
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Keep this well in mind that the magnetic poles are opposite in position as the geographic poles.

Magnetic north is at geographic south and vice versa.
Geographic north is the part which includes Greenland and south is Antartica.
When we hang a bar magnet then its poles are attracted to the opposite magnetic poles of the earth. We know that opposite poles attract each other.
That's the reason why the bar's north pole turns towards the geographic north of the earth and the south to south.

Multiple choice physics properties of a magnetic field earth - a gigantic magnet magnetic field of earth introduction to magnetic field and magnetic flux

The earth's field departs from its dipole shape substantially at large distance (greater than about $3000$ km). The responsible factor for this distortion is then

  1. motion of ions in earth's ionosphere

  2. motion of ions in earth's atmosphere

  3. motion of ions in earth's lithosphere

  4. motion of ions in the space.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Due to motion of ions in earth's ionosphere the earth's magnetic field gets modified.

Multiple choice geography our changing earth earthquake earthquakes earth's movement and creation of landforms

The axis of rotation of the earth is __________.

  1. Vertical

  2. Horizontal

  3. Tilted

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

1;The earth rotates around its vertical axis. The axis is an imaginary line passing through the centre of the earth. Its two ends on the surface are called North and South poles The Earth completes one rotation in 24 hours. 

2:The Earth's axis is vertical, meaning it runs up and down. (A rolling log, on the other hand, has a horizontal axis, meaning it runs sideways.) The Earth's axis runs from the North Pole to the South Pole. It takes the Earth 24 hours, or one day, to make one complete rotation around this invisible line

Multiple choice geography the signature of time movement of the earth's plates development of landforms study of continents - north america

The tilt of the earth's axis does not affect the variations in season at _______.

  1. The equator

  2. North pole

  3. South pole

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

 At the equator there are no seasons because each day the Sun strikes at about the same angle. Every day of the year the equator receives about 12 hours of sunlight.

Multiple choice commercial applications issues of the environment excessive consumption of resources atmosphere and its components atmosphere- wind

Where are the days and nights of equal length all year long?

  1. At $66.5^{o}$

  2. Nowhere
  3. At $23.5^{o}$

  4. At the Equator
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The Equator receives approximately equal day and night lengths throughout the year because it is positioned such that the sun's path remains consistent relative to the horizon.

Multiple choice geography world of diversities elements of weather and climate :rainfall and air pressure diversified world environmental regions (zones)

The International Date Line makes slight deviation from 180$^o$ meridian so that it __________________________.

  1. divides the land masses under the same administration

  2. does not divide the Bering strait

  3. does not divide a group of islands under the same administration

  4. divides the Pacific Ocean into two equal halves
Reveal answer Fill a bubble to check yourself
D Correct answer
Multiple choice physics air, winds and cyclones wind and rain example of some natural phenomena uneven heating of earth the concept of bernoulli's principle

Which area on the Earth receives maximum sunlight ?

  1. Polar region

  2. Equatorial region

  3. Along the latitude of Tropic of Cancer

  4. Along the latitude of Tropic of Capricorn
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
The Earth's shape is spherical. This causes the Sun's rays to strike the Earth's surface at different angles, creating variances in temperatures on Earth. The equator receives the most direct sunlight because sunlight arrives at a perpendicular (90 degrees) angle to the Earth.
Multiple choice physics constellations and galaxies light year evolution and end stages of stars in the world of stars

One light year is equal to

  1. 3.26 parsec

  2. 3.26km

  3. 3.26 A.U.
  4. $\displaystyle \frac{1}{3.26}$ parsec
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

One light year is the distance travelled by the light in one year. So,

$1$Parse $=3.08\times { 10 }^{ 16 }$m
$1$ light year$9.46\times { 10 }^{ 15 }$m
So
$1$ light year $=9.46\times { 10 }^{ 15 }$ parsec
                       $=3.08\times { 10 }^{ 16 }$
$1$ light year $=0.306$ parsec
                     $=\cfrac { 1 }{ 3.26 } $ parsec

Multiple choice geography the earth and the graticule general idea about earth space around the earth is the earth round?

Choose the correct option to complete the statements given below: 
The globe and the earth are different in _______.

  1. shape

  2. size

  3. continents and oceans

  4. none of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A globe is a miniature form of the earth, which represents distances, directions, continents, oceans, countries, etc. A globe is often misconstrued with a map, which diagrammatically represents the earth's surface or a part thereof, based on scale.

Multiple choice geography the earth and the graticule general idea about earth space around the earth is the earth round?

What is the habitable portion of the World Land Area?

  1. Less than 35%

  2. Less than half of it

  3. 50%

  4. About 75%
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The habitable portion of the Earth's land area is significantly less than half, as much of the land is covered by deserts, mountains, ice caps, or dense forests that are not suitable for large-scale human habitation.