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OCR GCSE Physics
Topic P6: Radioactivity
P6.2 Uses and Hazards
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What are the three main types of radioactive radiation?
Alpha, beta, and gamma
What is the charge and mass of gamma rays?
No charge, no mass
Alpha particles have the highest
ionizing
power.
Order the radiation types by their penetrating power from lowest to highest:
1️⃣ Alpha particles
2️⃣ Beta particles
3️⃣ Gamma rays
What is the charge of alpha particles?
+2
Ionizing power decreases in the order: alpha, beta,
gamma
.
True
Ionizing radiation can damage DNA and cells in living organisms.
True
Gamma rays have low ionizing power but high
penetration
Gamma rays can be stopped by thick lead or
concrete
.
True
Alpha particles are positively charged and consist of two protons and two
neutrons
.
True
Match the radiation type with its property:
Alpha particles ↔️ High ionizing power
Beta particles ↔️ Medium penetrating power
Gamma rays ↔️ Neutral charge
Beta particles are composed of two protons and two neutrons.
False
Beta particles have a charge of
-1
Gamma rays are high-energy electromagnetic
radiation
Match the use of radioactivity with its application:
Cancer treatment ↔️ Gamma rays
Measuring material thickness ↔️ Beta particles
Nuclear power generation ↔️ Nuclear fission
Alpha particles have high ionizing power but low
penetration
Alpha particles consist of two protons and two
neutrons
Alpha particles have high
mass
Alpha particles are effective at ionizing matter due to their high charge and
mass
.
True
Nuclear fission reactions in nuclear power plants use gamma rays to generate high
energy
Beta particles are used in gauges to measure material
thickness
Radioactivity is used in medicine, industry, and energy production due to the unique properties of alpha, beta, and gamma
radiation
Carbon-14 decay is used in radiocarbon
dating
Higher radiation doses increase the severity of
cellular
damage.
True
Increasing the distance from a radiation source reduces radiation
intensity
.
True
Nuclear
accidents
cause extensive contamination of soil, water, and air.
True
Genetic mutations caused by radiation can be passed on to
future generations
.
True
Radioactivity is the spontaneous emission of radiation from the nuclei of unstable
atoms
Beta particles are high-energy
electrons
Which type of radiation has the highest penetrating power?
Gamma rays
What material is commonly used to stop gamma rays?
Thick lead
Gamma rays have no
charge
or mass.
True
What is the composition of alpha particles?
Two protons and two neutrons
What type of radiation is used in radiocarbon dating?
Carbon-14 decay
Exposure to high levels of ionizing radiation can cause radiation sickness with symptoms like
nausea
and fatigue.
True
Match the type of radiation with its charge:
Alpha particles ↔️ Positive
Beta particles ↔️ Negative
Gamma rays ↔️ Neutral
Gamma rays have the lowest ionizing power among alpha, beta, and gamma radiation.
True
Gamma rays are used in medicine for cancer
treatment
Radioactive thermoelectric generators (RTGs) use alpha and
beta
particles to produce steady heat.
True
Nuclear fission reactions in nuclear power generation produce high energy.
True
See all 55 cards
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