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What radioactive element is best suited for determining the age of wooden tools used by prehistoric humans during the last ice age?
Wiki User
∙ 15y ago
Some of the isotopes used for this purpose are uranium-238, uranium-235 and potassium-40. However often the dates are not determined directly from isotopes in the fossils themselves, but instead from isotopes in layers of volcanic rocks above and below the fossils and the age of the fossils are estimated between these two measured dates.
Wiki User
∙ 7y ago
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What are unwanted radioactive products formed during nuclear reactions called?
Radioactive waste.
Bombarding a nucleus with high-energy particles that change it from one element into another is called?
During two types of radioactive decay an element is converted into another, 1- beta decay, during this decay a new element is formed with increase of one unit in atomic no but having the same atomic mass, 2- alpha decay converts the element into another having two units less in atomic no and four unit less in atomic mass.
A negative charged particle emitted during radioactive decay?
An electron during beta decay.
Is the use of stirrer necessary during heating while determining the melting point of ice in laboratory?
Yes it si.
Why does plutonium not exist naturally?
Being radioactive plutonium disappeared during the time; natural plutonium exist only in traces.
What happens to the mass of a sample containing a radioactive element during its half-life?
Chawad says... They are directly proportional
Why do you need to have a radon test done when you buy or sell a home in pennsylvannia?
Radon originates from Uranium 238, a radioactive element. Almost anywhere in the world you can find some radioactive Uranium 238 in the soil. Pennsylvania in particular has a lot of it. Radioactive simply means that the element or atom gives off energy which may a solid particle and changes into a different element. During this radioactive decay the releases of energy causes varying amounts of damage to whatever surrounds it.
How does a sample of radioactive waste decay to a nonhazardous level?
All radioactive material has a characteristic half-life. This is a period during which half the matter from the original mass will have decayed into a daughter element. Either the daughter element is non-radioactive and therefore non-hazardous or it is radioactive and has its own half-life. The total radioactivity thus reduces over time and at some stage is deemed to reach a non-hazardous level.
Is is possible to convert atoms of one element into atoms of another?
According to Dalton's atomic theory chemical reactions occur when atoms are separated, joined, or rearranged. Atoms of one element, however, are never changed into atoms of another element as a result of a chemical reaction (it is possible only during nuclear reactions and radioactive disintegration).
What is the difference between ultra violet alpha and ultra violet beta rays?
Ultraviolet is low energy light. Alpha particles are helium nucleii ejected from the nucleus of a heavy element during radioactive decay. Beta particles are electrons (or positrons) ejected from the nucleus of an element during radioactive decay.There is no such thing as "ultra violet alpha and ultra violet beta" rays.
What is printmaking during the prehistoric period?
There was no printing.
What is the inverse of photoelectric effect?
its ARTIFICIAL RADIOACTIVITY....because during bombarding, the element used,contains electrons which reacts with the non-radioactive substance which on further emits radiations.......
What radioactive element turns to lead when it has lost lots of energy?
It is uranium that is changed into lead during radioactive decay. Note that there are a number of intermediate steps in the conversion of uranium into stable lead. The uranium does not change directly into lead. The uranium atom undergoes decay, and a radioactive daughter product appears. This continues with radioactive daughters appearing at the end of every step - until lead appears.
What element has 12 alpha particles and 4 neutrons?
Mathematically it is Chromium 24Cr52 but within nucleus alpha particles separately do not exist they are only produced during radioactive disintegration.
What is the difference between pre-history and prehistoric?
Pre-History is a noun. Prehistoric is the adjective used to describe things that happened during Pre-History. (I.e. During Pre-History, Cro-Magnon Men hunted prehistoric mammoths.)
What are unwanted radioactive products formed during nuclear reactions called?
Radioactive waste.
Are prehistoric otters real?
No, they never existed. However, small mammals like mice lived during prehistoric times.
