Radioactivity Quiz

Atoms that undergo radioactive decay have a nucleus that is

• small

• unstable

• stable

• negatively charged

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Beta (β-) radiation consists of

• protons

• neutrons

• electrons

• atoms

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The most ionising type of radiation is

• alpha

• beta

• gamma

• neutron

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Isotopes of an element have nuclei with

• the same number of protons but different number of neutrons

• the same number of protons but different number of electrons

• the same number of neutrons but different number of protons

• the same number of neutrons but different number of electrons

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The most penetrating type of radiation is

• alpha

• beta

• gamma

• omega

How many protons does an atom of Uranium contain?

• 92

• 235

• 143

• 327

Name the scientist that won a Nobel prize for her work on radioactivity.

• Madam Marie Curie

• Ernest Rutherford

• Henri Becquerel

• Niels Bohr

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What is an alpha particle made out of?

• Protons and electrons

• Electrons and neutrons

• Only Neutrons

• Protons and neutrons

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When a nucleus gives off radiation what is this called?

• nuclear fission

• nuclear power

• nuclear decay

• nuclear fusion

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Carbon-14 has a half life of approximately 5,700 years. How much of a 1000 g sample will be left undecayed and still radioactive after 11,400 years?

• 1000g

• 250g

• 500g

• 125g

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