Radioactivity	Types of radiation	Half-life and C-14	Energy from the Nucleus	Vocabulary
10	10	10	10	10
20	20	20	20	20
30	30	30	30	30
40	40	40	40	40
50	50	50	50	50
Final Question

Who is the scientist credited with the discovery of radiation in 1896?

Who is the scientist credited with the discovery of radiation in 1896?

Henry Becquerel

Who is the scientist that first used the phrase "radioactivity"?

Marie Curie

Particle that consists of 2 protons and 2 neutrons

Alpha particle

What are some symptoms of radiation sickness?

Fatigue, Hair Loss, or Loss of Appetite

What type of minerals glow when exposed to light?

Fluorescent minerals

What type of radiation won't be stopped by paper, but will be stopped by 3 mm of aluminum?

Beta particle/ decay

What type of radiation has the most penetrating power?

Gamma Rays

What type of radiation can be used to detect defects in metal?

Gamma Rays

What type of radiation releases an electron or positron from the nucleus of an atom?

Beta decay

What type of radiation is described as very high energy light?

Gamma Rays

What happens to the level of C-14 in an organism after it dies?

Decreases

What is the half-life of a C-14 atom?

5,730 years

Carbon-14 can be used to find the age of objects up to how old?

50,000 years

What fraction of a substance will roughly be left after 2 half-lives?

1/4

What fraction of a substance will roughly be left after 6 half-lives?

1/64

What particle is used to start nuclear fission?

Neutron

Where can we see nuclear fusion occur?

The sun

What type of isotopes could be used to produce nuclear fusion?

Hydrogen

What are the 2 biggest problems with nuclear fission as a source of electical energy?

Waste disposal and Cost to build reactors

What temperature is necessary in order to achieve nuclear fusion?

Temps more than 100,000,000 C

Total number of protons and neutrons in a nucleus

Mass number

Atoms of the same element that have different number of neutrons

Isotope

What is the time it takes one-half of the nuclei of a radioactive isotope to decay called?

Half-life

The splitting of nuclei

Fission

The joining of nuclei

Fusion

What happened on April 26, 1986?

Chernobyl Nuclear Power Plant Meltdown/Explosion

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Go To The Final Question

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