Terra Forma Flashcards
(25 cards)
What is the shape of the Earth?
The Earth is an oblate spheroid.
How long does it take for the Earth to complete one rotation on its axis?
It takes approximately 24 hours.
What is the difference between a solar day and a sidereal day?
A solar day is about 24 hours, while a sidereal day is about 23 hours and 56 minutes.
What causes the seasons on Earth?
The tilt of the Earth’s axis and its orbit around the Sun causes the seasons.
What is a leap year?
A leap year is a year that has an extra day, February 29, added to keep the calendar year synchronized with the astronomical year.
What is the purpose of time zones?
Time zones are used to standardize time across different regions of the world.
True or False: The Prime Meridian is at 0 degrees longitude.
True.
What is the International Date Line?
The International Date Line is an imaginary line that runs from the North Pole to the South Pole, marking the change of one calendar day to the next.
Fill in the blank: The Earth’s axis is tilted at an angle of approximately _____ degrees.
23.5 degrees.
What is the equator?
The equator is an imaginary line that divides the Earth into the Northern and Southern Hemispheres.
How many time zones are there in the world?
There are 24 standard time zones in the world.
What does UTC stand for?
UTC stands for Coordinated Universal Time.
True or False: The Earth revolves around the Sun in an elliptical orbit.
True.
What is the significance of the Tropic of Cancer?
The Tropic of Cancer is the northernmost point where the Sun can be directly overhead at noon.
What is the significance of the Tropic of Capricorn?
The Tropic of Capricorn is the southernmost point where the Sun can be directly overhead at noon.
What is meant by ‘geographic coordinates’?
Geographic coordinates are a system of numbers that define the position of a point on the Earth’s surface, typically expressed in latitude and longitude.
What is the rotation of the Earth?
The rotation of the Earth refers to its spinning on its axis.
What is the revolution of the Earth?
The revolution of the Earth refers to its orbit around the Sun.
Fill in the blank: The Earth’s orbit around the Sun takes approximately _____ days.
365.25 days.
What defines the concept of ‘local solar time’?
Local solar time is based on the position of the Sun in the sky relative to a specific location.
What is the angle of the Earth’s axial tilt during solstices?
The axial tilt is approximately 23.5 degrees during solstices.
What is the length of a sidereal year?
A sidereal year is approximately 365.256 days.
True or False: The Earth rotates from east to west.
False. The Earth rotates from west to east.
What is the significance of the Arctic and Antarctic Circles?
The Arctic and Antarctic Circles are the latitudes where, during the summer solstice, the Sun does not set and during the winter solstice, the Sun does not rise.
