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The earth is about 4.6 billion years old. however the oldest sea floor is only about 180 million years old how could that be?
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How many millimeters are in a hectare?
The hectare is a metric unit of area defined as 10,000 square meters (100 m by 100 m). The millimeter is a unit of length, not a unit of area. However we could compare a square millimeter to a hectare. A single square meter contains a million square millimeters, and a hectare therefore contains ten billion square millimeters.
What is it called for a period of billion years?
There will be a lot of noughts in this answer!In the USA, a billion ('years' or anything) is one thousand million i.e. 1,000,000,000 or 109. (1,000 x 1,000,000)In the UK, 'a billion' used to mean 1,000,000,000,000 (1012), being a million times a million (1,000,000 x 1,000,000). But the American meaning, i.e. one thousand million (109) is now in more general use in the UK.The fact that Britain now has two alternative meanings for 'billion' can cause confusion and misunderstandings.British people seem increasingly aware that non-British people mean 1,000,000,000 (109) when the word billion is used, and they usually understand that 'a foreign billion' is therefore less than an 'old' British billion! However, for the avoidance of doubt, most financial and scientific texts make the real quantity clear by inserting the actual numerical value near any usage of the word 'billion(s)'.Why are there two different quantitative meanings of 'billion' ?Historic custom has led to different 'number terminology scales' being used in different countries. i.e.# the 'short scale' is used in the USA, and every new 'quantity name' means a one thousand (1,000) times increase in value over the previous 'quantity name'.# But the 'long scale' is used in many European countries, where the values underlying their names increase by a million (1,000,000) times the previous 'name'. How does this work?* The 'short scale' starts with one thousand (103), the next 'level' is 1,000 x 1,000 and is called a million (106). The next level is 1,000times a million (=1,000,000,000 or 109) and is called a billion. And a trillion is a thousand billion (1012) * The 'long scale' starts at a million (1,000,000 or 106). The next level is a a million million and is called a billion (1012), and a trillion is a million billion (1018).In the UK, the long scale (1012) system was used for many centuries, but in 1974 the UK government officially adopted the American short scale system, and since then all official publications and mass media now use this basis as a matter of standard 'style'.IN VIEW of the vast differences in magnitude between the two scales, users of the terms billion, trillion etc must ensure that they make clear the true numeric value of the actual quantities which the words are intended to convey. Similarly, readers and listeners must also check that they understand which values the writers/speakers really mean when they use terms such as billion and trillion.----Use of the word 'billion' in countries other than US or UK:# Many countries use their equivalents of the word billion to mean the long scale values (1012). e.g. Venezuela, Chile, France, Germany, Italy, Poland, Switzerland, Finland, Sweden, Colombia, Netherlands, Norway.# Most English-speaking countries, and a few other countries, use billion in the short scale (109) sense. e.g. Australia, New Zealand, Brazil, and English-language speakers in Hong Kong, Singapore and in the Philippines.---- CONCLUSIONS: * The expression 'a billion years', when from a UK source in an astronomical or scientific context, and when used since 1974, or if the term is being used by an American, or has a USA source, then it would most probably mean 1,000,000,000 (109) years.* If the context indicates that the source is UK based and if the date of publication is pre 1974, then it is likely that it means 1,000,000,000,000 (1012) years. * For all other situations, countries, language groups, time periods and contexts, further clarification should be obtained in order to determine which particular length of time (109 or 1012 years) is meant by 'a billion years' or the foreign language equivalent of this expression.(For more information, see 'Related links' below this box)
What is the distance of earth and Uranus?
The distance from Earth to the Sun is 93 million miles. Uranus has a mean distance of 1.78 Billion miles from the Sun. So the mean distance from Eath to Uranus is (1.78 billion miles - 93 million miles) = 1.687 Billion miles
Which technique has been used by scientists to determine that the earth is at least 4.5 billion years old?
Various methods have been used to date the earth itself, particularly, but not limited to, various radiometric techniques. In 1862, Lord Kelvin announced that he had calculated the time it would take the world to cool down from its molten state. He calculated that this was between 20 and 400 million years, but later refined his calculations to within the range 20 to 100 million years. With the subsequent discovery of radioactivity, it was soon realised that the uranium present in the earth could have prolonged its cooling for as long as necessary to harmonise with other methods. In the early years of the twentieth century, Rutherford established the age of a rock as 500 million years, by measuring the amounts of radium and helium present. Strutt soon realised that some of the helium would have escaped as the rocks were crushed for analysis, leading to false short estimates of the ages of the rocks - they were really even older than the initial estimates. In the late 1930s and early 1940s, using the new techniques and the world's most advanced mass spectromoter, Alfred Nier dated some rocks at up to 2570 million years old. Essentially all that was needed from now on was to find the oldest possible rocks on earth and calculate the time in which the earth's crust existed in a molten state before the rocks were formed. The oldest so far found on earth are zircon crystals found in Western Australia, that are more than 4.4 billion years old. The oldest known solid constituents of meteorites formed within the solar system are 4.567 billion years old, giving a probable upper limit for the age of Earth.
If you know a civilization exists 1 billion light years away and you visited them would you be 1 billion years in the future with them possibly being extinct?
that could be
Could 300.000 dollars cure cancer?
No it could not. 300.00 (three hundred) dollars would help though. However, three million or 300 million or 3 billion or 30 billion or 300 billion dollars would really help. Keep on donating money to cancer research companies!
How do you write a billion in figures?
There are two "types" of Billion. Long and short.A billion in the UK, used to be a million million. However, the Americans, for some unknown reason, decided to call a billion a 1,000 million. Probably so they could be billionaires a lot quicker.So:Long: 1,000,000,000,000Short: 1,000,000,000The long is now hardly used and the short is now the accepted usage.
How many times does 250 million go into 5 billion?
250 million is a quarter of 1 billion so there are 4 of them in 1 billion. So in 5 billion, there are 4*5 = 20 of them. Could hardly be simpler!250 million is a quarter of 1 billion so there are 4 of them in 1 billion. So in 5 billion, there are 4*5 = 20 of them. Could hardly be simpler!250 million is a quarter of 1 billion so there are 4 of them in 1 billion. So in 5 billion, there are 4*5 = 20 of them. Could hardly be simpler!250 million is a quarter of 1 billion so there are 4 of them in 1 billion. So in 5 billion, there are 4*5 = 20 of them. Could hardly be simpler!
How do you say 1083000000?
You could say, "One thousand eighty-three million" (because one billion is one thousand million) or you could say, "One billion eighty-three million".
How many zeros are at the end of a billion?
Confusingly there are two types of billion. Long and short. In Britain, a billion used to be a million million 1012 whilst in the US a billion was a thousand million 109. (Probably so there could be more billionaires). Since globalisation, the short form has become the standard, so there are 9 zeros in a billion.
How many 1 million does it take to make 1 billion?
In the "short count" system, 1 million is 1,000,000 and 1 billion is 1,000,000,000, so there are a thousand million in a billion. In the "long count" system, there are a million million in a billion and a thousand million is either called that or some word cognate with "milliard". The US uses pretty much exclusively short count. In Europe, you could see either; you need to know what the convention is where you are to know for sure what a billion is.
Two thousand and seven million in numbers?
Well, it depends on what you mean. It could be 7,002,000, which is seven million two thousand, or it could be 2,007,000,000, which is really two billion and seven million
What could you get if you had half a billion dollars?
Everything that is valued at $500 million dollars or less.
How do you write fifty five billion seventeen million two thousands?
55,017,002,000. In the UK, it could also be written 55,000,017,002,000 since many British people define one billion as a one million million rather than the mathematically-correct one thousand million.
How do you round up 1031246491 then translate it to words rather than numerals?
1031246491 is approximately 1.03 billion, which could be stated as "one point oh three billion" or "one billion, thirty million".
How do you write the sum in words 129600000000?
129.600.000.000 would be written as one hundred twenty nine billion 6 hundred million. You could also write 129.6 billion.
How would you wite 1.351billion?
You could write it like this: 1,351,000,000 In words you could say "One billion three hundred and fifty one million."
