GENERAL GEOLOGY

GEOLOGY

PHYSICAL GEOLOGY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
How old do geologists believe the Earth is?
A
2022 years old
B
3.6 billion years old
C
4.6 billion years old
D
4.6 million years old
E
10 Billion years old
Explanation: 

Detailed explanation-1: -Earth is estimated to be 4.54 billion years old, plus or minus about 50 million years. Scientists have scoured the Earth searching for the oldest rocks to radiometrically date. In northwestern Canada, they discovered rocks about 4.03 billion years old.

Detailed explanation-2: -It is widely accepted by both geologists and astronomers that Earth is roughly 4.6 billion years old. This age has been obtained from the isotopic analysis of many meteorites as well as of soil and rock samples from the Moon by such dating methods as rubidium–strontium and uranium–lead.

Detailed explanation-3: -The three primary methods are: Radiation Measurement. Stratigraphic Superposition. The Fossil Record.

Detailed explanation-4: -The age of the Sun can be estimated from the ages obtained from radioactive dating of the oldest meteorites. This may seem odd at first, but in fact it is extremely likely that the solar system (i.e. th Sun, planets, asteroids etc.) formed as one unit.

Detailed explanation-5: -The Earth formed over 4.6 billion years ago out of a mixture of dust and gas around the young sun. It grew larger thanks to countless collisions between dust particles, asteroids, and other growing planets, including one last giant impact that threw enough rock, gas, and dust into space to form the moon.

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