Podcast
Questions and Answers
An approximate equation for calculating the convergency between two meridians is:
An approximate equation for calculating the convergency between two meridians is:
Given: value for the ellipticity of the Earth is 1/297. Earths semi-major axis, as measured at the equator, equals 6378.4 km. What is the semi-minor axis (km) of the earth at the axis of the Poles?
Given: value for the ellipticity of the Earth is 1/297. Earths semi-major axis, as measured at the equator, equals 6378.4 km. What is the semi-minor axis (km) of the earth at the axis of the Poles?
The sun's declination is on a particular day 12.00 S. Midnight sun may this day be observed:
The sun's declination is on a particular day 12.00 S. Midnight sun may this day be observed:
The angle between the plane of the Equator and the plane of the Ecliptic is:
The angle between the plane of the Equator and the plane of the Ecliptic is:
Signup and view all the answers
Consider the following statements on longitude.
Consider the following statements on longitude.
Signup and view all the answers
Flashcards
Inclination of the Ecliptic
Inclination of the Ecliptic
The angle between the plane of the Equator and the plane of the Ecliptic is 23.5 degrees.
Convergency
Convergency
The difference in longitude between two meridians, measured along a parallel of latitude.
Semi-minor Axis of Earth
Semi-minor Axis of Earth
The semi-minor axis of the Earth, representing the distance from the center of the Earth to the surface at the poles.
Ellipticity of Earth
Ellipticity of Earth
Signup and view all the flashcards
Midnight Sun
Midnight Sun
Signup and view all the flashcards
Solar Declination
Solar Declination
Signup and view all the flashcards
Longitude
Longitude
Signup and view all the flashcards
Convergency Equation
Convergency Equation
Signup and view all the flashcards
Semi-major Axis of Earth
Semi-major Axis of Earth
Signup and view all the flashcards
Maximum Longitude
Maximum Longitude
Signup and view all the flashcards
Maximum Change in Longitude
Maximum Change in Longitude
Signup and view all the flashcards
Range of Longitude
Range of Longitude
Signup and view all the flashcards
Longitude Units
Longitude Units
Signup and view all the flashcards
Earth's Shape
Earth's Shape
Signup and view all the flashcards
Polar Distance
Polar Distance
Signup and view all the flashcards
Latitude and Day Length
Latitude and Day Length
Signup and view all the flashcards
Earth's Rotation and Revolution
Earth's Rotation and Revolution
Signup and view all the flashcards
Longitude and Time
Longitude and Time
Signup and view all the flashcards
Earth's Magnetic Field
Earth's Magnetic Field
Signup and view all the flashcards
Study Notes
Convergence Equation
- Convergence is calculated using different equations depending on the parameters used
- One formula is: Convergence = 60 x dlong x cos lat
- Another formula: Convergence = dlong x sin mean lat
- Another formula: Convergence = dlat x sin mean long
- Another formula: Convergence = dlong x cos lat
Earth's Ellipticity
- Earth's ellipticity is 1/297.
- Semi-major axis at the equator is 6378.4 km
- Semi-minor axis at the poles is 6356.9 km
Sun's Declination
- Sun's declination on a particular day at 12.00 S.
- Midnight sun is observed at North of 7800N .
Angle Between Equator and Ecliptic
- Angle between the plane of the Equator and the Ecliptic is 23.5 degrees.
Longitude
- Longitude is measured in degrees up to 360°.
- The largest value of longitude is 180°.
- The largest value of change of longitude is 90°.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
This quiz explores various geographic calculations, including convergence equations, the ellipticity of Earth, and sun's declination. It also covers the angle between the Equator and the Ecliptic, alongside understanding longitude measurements. Test your knowledge on these essential topics in geography and earth sciences.