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WorksheetsRadioactivity Leaving Cert
Total questions: 21
Worksheet time: 21mins
Which type of radiation does not consist of particles?
Alpha radiation
Gamma radiation
Beta radiation
Nuclear reactions involve...
conservation of mass
energy combining from intermolecular bonds
release of energy from nucleus
none of these answers are correct
Beta decay involves a proton changing into a neutron and an electron which is emitted
True
False
This scientist is credited with the discovery of radioactivity
Becquerel
Moseley
Rontgen
Thompson
Radioactivity is the spontaneous random decay of unstable nuclei with the emission of alpha, beta or gamma radiation
True
False
Gamma Radiation is
found travelling at the speed of light
not deflected in electric or magnetic fields
only stopped by thick slabs of lead
all of these are correct
When an unstable nuclei undergoes alpha or beta particle emission, a new element is formed. The changing of one element to another is called
Transfiguration
Transmutation
Transformer
Transcendence
What type of decay is shown here?
Alpha decay
Beta decay
Gamma decay
Beta particles...
are not affected by electrical fields
Have no mass
all of these answers are correct
have a negative charge
The half-life of an element is the time taken for....
half of the radiation to be emitted
half the nuclei of the given sample to decay
half the carbon-14 of a substance to be emitted
What is the half-life of the isotope shown in the graph?
1 minute
3 minutes
5 minutes
6 minutes
An alpha particle...
has a relatively low velocity
all of these answers are correct
is a helium nucleus
is positively charged
The most penetrating radiation is...
beta particles
gamma rays
alpha particles
Pierre and Marie Curie are credited with the discovery of....
Radon
Radioactivity
radiography
polonium
What type of radioactive decay is shown here?
Alpha decay
Beta decay
Gamma decay
What is the name of the radioactive element used in smoke detectors?
Americium-141
Americium-121
Americium-241
Americium-341
The most radioactive place on earth is
Semipalatinsk Test Site, Kazakhstan
Fukushima, Japan
Chernobyl, Ukraine
The Hanfors Site, Washington, USA
What is the name of the instrument used to detect radioactivity?
Muller-Corner Tube
Muller-Geiger Tube
Geiger-Muller Tube
A beta particle is formed when a neutron in an unstable nucleus is changed into...
2 electrons and both of these electrons are emitted from the nucleus
1 proton and 1 electron and the electron is emitted from the nucleus
2 protons and one of the protons is emitted from the nucleus
A radioisotope is a radioactive isotope
True
False
1
2
3
4
