GCSE AQA Physics Hazards & Uses of Radioactive Emissions & of Background Radiation: Carbon-12 and carbon-14 are both

Question

Carbon-12 and carbon-14 are both isotopes of carbon.

Complete the sentences.

Choose answers from the box.

alpha particles
electrons
neutrons
protons

The nucleus of a carbon-12 atom and the nucleus of a carbon-14 atom have the same number of __protons__.

The nucleus of a carbon-12 atom and the nucleus of a carbon-14 atom have a different number of __neutrons__.

Different radioactive isotopes have different half-lives.

What does 'half-life' mean?

Tick (✓) one box.

Half the time taken for all of the nuclei in a sample to decay.

The time taken for half the nuclei in a sample to decay.

The time taken for one nucleus to split in half.

Table 2 shows the half-life of some different isotopes of carbon.

Which isotope is the least stable?

Tick (✓) one box.

Carbon-15
Carbon-16
Carbon-17
Carbon-18

Workers in nuclear power stations must be aware of nuclear irradiation and radioactive contamination.

Draw one line from each term to an example of the term.

Term
Example

Exposure to a beam of gamma rays
Exposure to ultraviolet radiation from the Sun
Nuclear irradiation
Accidental transfer of plutonium onto a human body

Draw one line from each process to its fuel.

The process of nuclear fission takes place in nuclear power stations.

The process of nuclear fusion takes place in the Sun.

Process
Fuel

Hydrogen
Iron

Nuclear fission
Lead
Nuclear fusion
Uranium

Why are workers required to walk across a sticky floor before leaving the nuclear power station?

Tick (✓) one box.

To remove alpha particles from their shoes.

To remove gamma radiation from their shoes.

To remove radioactive dust from their shoes.

The places where people work and live contribute to the nuclear radiation they are exposed to.

Table 3 shows the mean daily dose of radiation caused by two different jobs.

Job
Mean daily dose in mSv

Aeroplane pilot
0.072
Nuclear power station worker
0.00050

Calculate the number of days a nuclear power station worker must work before receiving the same dose that an aeroplane pilot receives in one day.

Number of days =

The process of nuclear fusion takes place in the Sun.

Draw one line from each process to its fuel.

Carbon-12 and carbon-14 are both isotopes of carbon - AQA - GCSE Physics - Question 3 - 2023 - Paper 1

Worked Solution & Example Answer:Carbon-12 and carbon-14 are both isotopes of carbon - AQA - GCSE Physics - Question 3 - 2023 - Paper 1

The nucleus of a carbon-12 atom and the nucleus of a carbon-14 atom have the same number of

The nucleus of a carbon-12 atom and the nucleus of a carbon-14 atom have a different number of

What does 'half-life' mean?

Which isotope is the least stable?

Draw one line from each term to an example of the term.

Why are workers required to walk across a sticky floor before leaving the nuclear power station?

Calculate the number of days a nuclear power station worker must work before receiving the same dose that an aeroplane pilot receives in one day.

Draw one line from each process to its fuel.

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