Radioactivity
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True or False? Beta particles are strongly affected by a magnetic field
True or False? Ionising radiation can kill cells
True
True or False? Gamma radiation is the most dangerous if the source is inside your body
True or False? Gamma radiation does not have a charge so is unaffected by magnetic fields
True or False? Alpha is the most penetrating radiation
True or False? Alpha is the most ionising radiation
5 sources of background radiation are…
Rocks, air, building materials,outer space, food
What is beta radiation?
High-energy electrons emitted by some radioactive materials
What is background radiation?
Constant low-level radiation from food and environmental sources
What is alpha radiation?
Positively charges particles made up of two protons and two neutrons
What is gamma radiation?
Short-wavelength electromagnetic radiation emitted during radioactive decay
What is a Geiger-muller tube?
A device used to detect and measure radiation from radioactive materials
What is ionising radiation?
High-energy radiation capable of ionizing substances through which it pas
What is radioactivity?
The spontaneous emission of radiation from the nucleus of an unstable atom
How is irradiation used?
What is contamination?
Domestic/Industrial uses of radiation are…
Why is irradiating food useful?
Makes it safer to eat + can be stored for longer.
How can food be irradiated?
Gamma rays
What kind of radiation is produced by americium-241?
Alpha particles