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1 billion years.
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∙ 14y ago
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True or false the first era the precambria era lasted 4 billion year and was the longest era during that time the earth had no solid crust?
It is best to break down the question into smaller parts.1) The Precambrian was the 1st Era? (FALSE)The Precambrian was a super-eon not an era. It was the 1st of the 2 Super-Eons.The 1st named era was the Eoarchean Era (3,800 - 3600 Ma). This was during the Archean Eon (3,800 - 2,500 Ma). This was proceeded by the Hadean Eon (4,600 - 3,800) but no Eras from this time have been named. These were all in the Precambrian Super-Eon (4,600 - 542 Ma).2) The Precambrian was the longest Era? (FALSE)The longest era also occurred in the Precambrian. This was the Paleoproterozoic Era (2,500 - 1,600 Ma) which lasted 900 million years.3) The Precambrian lasted 4 billion years (TRUE)The Precambrian was the longer of the 2 super-eons. It lasted from 4,500 to 542 million years ago, some 3.96 billion years, compared to the current super-eon that has lasted a mere 542 million years.4) During the Precambrian the Earth had no solid crust (FALSE)The Earth is approximately 4,600 million years old. According to the latest theory 4,530 a Mars sized planet called theia hit the earth causing the crust to in part or totally melt (It also gave rise to the moon). Estimates suggest that over the next 30 million years the crust was able to solidify so when the Precambrian Super-Eon started the crust was solid. Certainly by 3,500 million years ago there was life. Fossilized stromatolites have been found at this time. There is no known life that can survive at the temperates necessary for molten rock so the crust must have cooled and solidified by this time.
How many years after the total assets of Americas mutual funds hit 1 billion did it take for them to reach 1 trillion?
45 years
How many Olympics have there been in the last 100 years?
1 billion
How many years has it been since 1 BC?
2012 years ago
How many years did World War 1 last?
It lasted 4 years and 3 months. four
How many years is in one eon?
A billion.
How many years are there in the century?
Fifty, and an eon is 10,000. A century is 100 years...
What are three eons of the precambrian supereon?
• PRECAMBRIAN EON (noun)The noun PRECAMBRIAN EON has 1 sense:1. the eon following the Hadean time and preceding the Phanerozoic eon; from about 3,800 million years ago until 544 million years agoFamiliarity information: PRECAMBRIAN EON used as a noun is very rare.your lovely Chloe xxx
What 3 letter word means 1 billion years?
it is called an eon
What is after eon?
I don't know the plural of eon but the answer is more than 1 eon
How Many Hours Each Eon Takes Up On Our 12-hour Clock.?
An eon is not a precise term: it refers to a very long period of time. Some consider an eon to be a billion years. That is 8,766 billion hours.
What eon do people live in today?
5th Edit: The ancient Greeks referred to an eon as being an eternity, so by that definition, we would be in the one and only eon, but in geology, an eon amounts to about 1 billion years, making the Earth be 4.6 eons old, so, the answer would either be the first eon, or the 5th eon. Depends on how you look at it.
How long did the Proterozoic eon last?
The Proterozoic eon was the third eon in Earth history. It lasted from 2.5 billion years ago to 542 million years ago. Therefor, the Proterozoic was nearly 2 billion years long.Read more: How_long_did_the_proterozoic_era_last
How many seconds are in an eon?
Approximately 31536000000000000 seconds are in an eon.
How many hours does each eon takes up on our 12hour clock?
An eon is an undefinable EXTREMELY long period of time- millions or billions of years. Since it has no defined length of time, it cannot be stated in hours- or days or years.
How long did the Precambrain last?
Precambrian is an informal term for the time before the Cambrian Period, the first period of the Phanerozoic Eon. The Precambrian consists of three eons, the Hadean, the Archean, and the Proterozoic. The Hadean Eon is about 760,000,000 years long. The Archean Eon is about 1,300,000,000 years long. The Proterozoic Eon is about 1,960,000,000 years long This comes to a total of 4,025,000,000 years.
How many years did the precambrian last?
The Precambrian Super-Eon lasted from 4,576.2 until 542 million years ago approximately 4.0422 billion years.
