Topic 4 Flashcards by Dixie Watt

Q

What does an alpha particle contain?

A

2 protons and 2 neutrons

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Q

What is a beta particle?

A

An electron

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Q

How is a beta particle produced in the nucleus?

A

A neutron turns into a proton and an electron

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Q

What particles are in the nucleus?

A

Proton and neutron

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Q

What is the charge of a nucleus

A

Positive

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Q

What is nuclear fusion

A

The fusion of 2 nuclei to form a heavier nucleus.

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Q

What does nuclear fusion produce?

A

A heavy nucleus and energy

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Q

What is nuclear fission?

A

A heavy nucleus splitting to form to smaller nuclei

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Q

What is required for nuclear fission to happen?

A

Needs to absorb a neutron

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Q

What is produced from nuclear fission

A

2 nuclei, energy, gamma rays, neutron

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Q

Which radiation is most penetrating

A

Gamma

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Q

What radiation is most ionizing

A

Alpha

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Q

What material is alpha absorbed by

A

humans
paper

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Q

What is beta radiation stopped by

A

Aluminum

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Q

What is gamma radiation stopped by

A

Lead

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Q

What is half life

A

The amount of time it takes for the number of nuclei to half