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WorksheetsWhat is radioactivity?
Total questions: 28
Worksheet time: 14mins
What is fission?
Where a larger atom splits into 2 smaller atoms
Where a smaller atom fuses with another smaller to form a larger
Where a larger atom splits into 2 equally as large atoms
Where a larger atom splits duplicates itself
What is the force that hold 2 atoms together called?
Gravity
Inertia
Strong force
Force
Who discovered radioactivity, and in what year?
Henri Becquerel, 1896
Marie Curie, 1476
Pierre Currie, 1896
Henri Becquerel, 1767
What was the last name of the couple who discovered 2 new elements?
Rutherford
Becquerel
Curie
Pierre
Any element over atomic #__ is radioactive
112
76
92
83
Is it true that radioactive materials have unstable nuclei?
Yes
No
What is makes an unstable nuclei unstable?
Too many/too few electrons
Too many/too few protons
Too many/too few neutrons
Lack of nucleus
What are some elements involved in fission?
Uranium-235
Hydrogen
Plutonium
Helium
Is energy released in fission?
Yes
No
Fission results from a ________ hitting a nucleus
Proton
Nuetron
Electron
Energy
The events that occur with fission cause a _______ __________
Chain reaction
Nuclear meltdown
Fusing of 2 small atoms into a larger
Chain meltdown
Nuclear power plants use:
Fusion
Fission
Which type of radioactivity is seen in the sun?
Fusion
Fission
Combustion
Binding
What are 2 reasons why we would want to use fusion in nuclear power plants?
Fusion is good
Hydrogen is the most common element on Earth, there is plenty of it
We could meet energy demands for millions of years
Fusion is already used in power plants
Why CAN'T we use fusion in nuclear power plants?
( Multiple reasons )
Needs a lot of energy
Need to overcome the powerful electrical forces
Difficult to control
It has never been produced in a nuclear power plant, so we don't really know how to
What is released in fusion?
Nuetron
Proton
Electron
Both fission and fusion...
Follows Einstein's e=mc^2
Result in large amounts of highly radioactive waste
Give off secondary radiation like alpha, beta, and gamma particles
Produces large amounts of energy from the conversion of small amounts of lost mass
Fusion involves...
Heavy isotopes like Uranium-235 and plutonium
Light isotopes like hydrogen and helium
Isotopes that have an atomic mass # of 83 or more
Large atoms splitting into smaller
This results in large amounts of highly radioactive waste
Fusion
Fission
The period of time it takes for a radioactive sample to decay to half of it's original amount
Full-life
Time
Evolution
Half-life
Atoms of the same element with varying numbers of nuetrons
Isotopes
Ions
Atoms
Fission
Positively-charged particles consisting of 2 protons and 2 nuetrons emitted by radioactive materials
Beta particles
Alpha particles
Gamma particles
Proton particles
Electrons emitted by the nucleus when a neutron is changed to a proton during radioactive decay
Alpha particles
Beta particles
Gamma particles
A high energy photon resulting from the redistribution of the charge within the nucleus
Alpha radiation
Gamma radiation
Beta radiation
Nuclear radiation
Power, especially electricity, the source of which is fission or fusion
Nuclear power
Radioactive power
Alpha power
Beta power
A byproduct of radioactive decay
Gamma radiation
Nuclear power
Fission
Nuclear waste
Energy stored in bonds within the nucleus of an atom; energy released from a fission or fusion reaction
Nuclear energy
Alpha energy
Proton energy
Radioactive energy
The spontaneous emission of energy and / or matter from the nucleus of an unstable atom. As a result of the emission, the atom may be converted into an atom of a different element
Fission
Gamma radiation
Radioactivity
Nuclear energy
