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Erin Bode

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Cards in this guide (20)
Outline on nuclear energy

Definition: energy from nuclear fission or fusion: the energy released by nuclear fission or fusion

What is radioactive dating

Radioactive dating is a technique used to find how old an object is.

One such example is potassium-argon dating, where potassium decays into argon. The proportion of potassium to argon suggests how old the object in question is.

An equation used is t = (1/c)Ln(1+(D/P)) Where c is the decay constant D is number of daughter atoms (number decayed) P is the number of parent atoms (number undecayed) t is the age of the object.

Another common technique in dating an object is carbon dating. Because the amount of carbon-14 has remained roughly constant through time on the earth it is possible to calculate the age of an object by finding the proportion of carbon-14 to carbon-12.

There is a suspicion that the relative abundance of carbon-14 could be changing due to the thinning of the ozone layer. The amount of carbon-14 depends on the amount of radiation permeates the ozone and thus the amount could be changing. Not proven, only a hypothesis.
Accuracy radioactive dating is called radiometric dating. This is taught in biology.

What is the total kinetic energy of the atoms and molecules in an object called

Temperature is the measure of average kinetic energy of all the atoms and molecules in an object

What describes a radioisotope

An isotope of an element that is radioactive

What is the biggest problem with radioactive waste

It has a very long half-life. Disposal of radioactive waste is the biggest problem. Proper disposal is essential to ensure protection of the health and safety of the public and quality of the environment including air, soil, and water supplies.

What must happen for a nucleus to be stable

The strong nuclear force must balance electrostatic forces in the nucleus

What does it mean for an element to undergo transmutation

an element becomes a totally different element..

What information is obtained from radioactive dating

The age of an object that was once living.

What does binding energy measure

The energy used to hold the nucleus together

Which issue associated with nuclear power is the biggest source of debate

The biggest issue associated with nuclear power is determining what can be done with the radioactive waste.

What is the half life of a radioisotope if a 20 g sample becomes 10 g after 16 hours

The half-life is 16 hours.

What represents a alpha particle

4/2He

During an earthquake the cooling system of a nuclear reaction can be compromised increasing the threat of what

a meltdown

What would result in a transmutation

An alpha particle being emitted would result in a transmutation.

What is the best definition of radioactive decay

Radioactive decay is the spontaneous breakdown of a nucleus into smaller parts.

In a nuclear fission reaction a freely moving neutron is introduced to nuclear fuel such as uranium 235 what happens next

A neutron is absorbed by an atoms nucleus

How is the H fusion used to calculate the mass of solid that 1kJ of energy will melt

1kj x 1/H fusion x g/mol solid

How much energy is released is a sample loses 0.05 kg mass through radioactive decay

4.5 × 1015 J

What is the c-14 c-12 ratio used to date once living organisms

the ratio is 1.3 x 10^(-12)

What is a gluon

A particle that binds quarks to one another. (Apex)

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