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Try your hand at our Earth Day quiz with answers.
Earth Day Quiz Questions. What region on Earth produces 20% of the planet’s oxygen? Answer: The Amazon rainforest. What is the greenhouse effect?
Map projections are used to represent the three-dimensional Earth on a two-dimensional map. The Earth's position relative to the Sun affects climate, seasons, and time zones. [1] Location as a theme helps teachers to demonstrate to students that observers have to know and be able to explain where something is before it can be examined ...
The International Earth Science Olympiad (IESO), one of the thirteen International Science Olympiads, is an annual competition for secondary school students that tests their abilities in disciplines such as geology, meteorology, environmental science, and terrestrial astronomy. Students who are winners of the respective national competitions ...
Students from Cornerstone Learning Community in Florida planted wiregrass on Call to Earth Day. Together, they planted over 700 seeds to help restore the native wiregrass ecosystem.
The earth is a very slightly oblate spheriod, with a average diameter of approximately 12,742 kilometers. Since the highest point on the earth, the summit of Mount Everest is only 8,850 meters, the earth is spherical within a tolerance of one part in 1,439, or 0.00069 percent. The mass of the earth is approximately 6 sextillion metric tons.
Earth is rounded into an ellipsoid with a circumference of about 40,000 km. It is the densest planet in the Solar System. Of the four rocky planets, it is the largest and most massive. Earth is about eight light-minutes away from the Sun and orbits it, taking a year (about 365.25 days) to complete one revolution.
The first eon in Earth's history, the Hadean, begins with the Earth's formation and is followed by the Archean eon at 3.8 Ga. [2]: 145 The oldest rocks found on Earth date to about 4.0 Ga, and the oldest detrital zircon crystals in rocks to about 4.4 Ga, [34] [35] [36] soon after the formation of the Earth's crust and the Earth