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Well, one complete rotation on Earths axis lasts about 24 hours. (23 hours, 56 minutes, and 4 seconds to make a 360 degree rotation to be exact). There are 7 days in a week, and one Earth day lasts approximately 24 hours, so that means that in one week, it will make 7 complete rotations on its axis.
The hour hand = 24 rotations per day. The minute hand = 24 x 60 = 1,440 rotations per day. The second hand = 24 x 60 x 60 = 84,400 rotations per day. That;s a total of 87,864 rotations for all three pointers.
I think that the total number left on earth is less then a thousand . Am I right?
Freshwater makes up about 2.5% of the total water on Earth, while saltwater makes up about 97.5%.
Water makes up 75% of the total surface of Earth.
The Earth's core makes up about 15% of the planet's total mass.
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The Earth's mantle makes up about 84% of the planet's total volume.
The Earth's core makes up about 15 of the planet's total volume.
The total number of countries in the world as 2014 is 196
The mass number is the average total of the number of protons and neutrons in the atomic nuclei of all the isotopes of that element on earth. Thus, the average number of neutrons in that element can be found by subtracting the atomic number from the mass number.
Nitrogen is the most abundant gas in Earth's atmosphere, making up about 78% of the total volume.