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Cosmic rays bombard the upper atmosphere (see Carbon 14 wiki):
"Carbon-14 is produced in the upper layers of the troposphere and the stratosphere by thermal neutrons absorbed by nitrogen atoms. When cosmic rays enter the atmosphere, they undergo various transformations, including the production of neutrons. The resulting neutrons (1n) participate in the following reaction: : 1n + 14N → 14C + 1H"
What else can I help you with?
When puddle water evaporates does it enter our atmosphere?
Yes, water vapors enter in the atmosphere.
What do we call pieces of stone the enter the earths atmosphere?
Meteoritesis what we call stones that enter the earths atmosphere.
How does gravity enter your atmosphere?
It doesn't "enter" the atmosphere, it comes from the large mass of the earth which creates a gravitational pull.
What do we call pieces of stones that enter earths atmosphere?
Meteoritesis what we call stones that enter the earths atmosphere.
What do we call pieces of stone that enter the earth's atmosphere?
Meteoritesis what we call stones that enter the earths atmosphere.
What happen when a asteroid when they enter the earths atmosphere?
Usually they will burn up due to the friction they encounter when they enter the atmosphere, or they will bounce off the atmosphere and be deflected into deep space.
What are stones that enter the atmosphere?
meteorites
What Limitations are there of using carbon14 to date rocks?
The main limitations of using Carbon14 dating to find the age of something that is carbon base are firstly the possibility that carbon may be absorbed by some things making it more difficult to get an absolutely accurate age and secondly, with Carbon14 only having a half life of 5,568 years the maximum theoretical limit for detection is 100,000 years.
What is the mass number of carbon14?
Carbon is a non metallic element. Mass number of it is 12.
What do scientists use to determine a fossil's relative age?
Carbon14 dating (isotopic dating)
Do comets or asteroids enter the earth's atmosphere as a flaming ball?
No, they start breaking down to a small rock, asteroids enter the earths atmosphere frequently.
Why carbon can not enter the atmosphere?
Carbon can enter the atmosphere. It moves in and out of the atmosphere through the earth's regular carbon cycle.What it can not do is enter as pure carbon. Carbon is a solid in it's natural state and solids fall out of our atmosphere. Carbon must mix with a gas, such as oxygen, to create another gas, carbon dioxide, to enter the atmosphere.
