WorksheetsMastery Check - Radioactivity
Total questions: 15
Worksheet time: 15mins
What is energy is released during nuclear reactions?
electrical energy
nuclear energy
microwave energy
radio energy
Which type of radioactive decay is represented by the reaction pictured?
Alpha Decay, the atomic nucleus emits energy that changes the atom and the mass number is decreased by 4 while the atomic number is decreased by 2
Beta Decay, the neutron is split into a proton and electron within the nucleus while keeping the mass number the same and increases the atomic number by 1
Gamma Decay, the nucleus emits a photon of light releasing energy while the mass number and atomic number stays the same
Nuclear Decay, the nucleus is affected by a collision between the neutrons and the protons that caused the mass number to decrease to 0 and the atomic number increase by 2
Tim creates a model of a fission reaction using plastic building blocks. He uses four black blocks for to represent neutrons. He uses a red block for barium and a blue block for krypton. For uranium-235, he snaps two black, one red, and one blue block together.
How does Tim's correct model of fusion look?
The half-life of uranium-235 is 700 million years. If there are 2000 g of uranium-235 in the original sample, what happens after 2100 million years have passed? Select all that apply.
One half-life has passed.
Two half-lives have passed.
Three half-lives have passed.
125 g of the original sample remains.
250 g of the original sample remains.
The graph shows the range of amounts of carbon dioxide (CO2) given off to produce one kilowatt/hour for different methods of electricity production.
How does the amount of carbon dioxide given off by nuclear power compare with the amount of carbon dioxide produced by solar photovoltaic?
Nuclear power produces half as much CO2 as solar photovoltaic power.
Nuclear power produces more CO2 than solar photovoltaic power.
Nuclear power produces less than 10% of the CO2 produced by solar photovoltaic power.
Solar photovoltaic power produces less CO2 than nuclear power.
This question is my fault... you needed to select TWO options.
Which does not occurs as a result of this reaction?
Mass and energy are created.
Matter is converted into energy.
Energy is converted into matter.
2 Hydrogen atoms become a Helium atom.
Which of the following best describes what occurs in a fission reaction?
Two low mass nuclei are joined to form one nucleus.
A single nucleus divides into two or more nuclei and gives off energy.
Electrons are shared between the nuclei.
A chemical reaction occurs between the nuclei.
How are fusion and fission alike?
Both combines small nuclei into a large nuclei.
Both break large nuclei into smaller nuclei.
Both produce large amounts of energy.
Both produce large amounts of matter from a small amount of matter.
What occurs in a nuclear power plant when two lighter nuclei combine to form a heavier nucleus?
nuclear fusion
nuclear fission
a chemical reaction
a neutralization reaction
What is not the ideal location for a radioactive waste storage facility?
in an area that already has a lot of background radiation
in an area that has few earthquakes
in an area that is unpopulated with people
far away from ground water
How many half-lives does it take for a radioactive substance to decay until only one eighth of the original substance remains?
one
two
three
four
The half-life for a 400-gram sample of radioactive element X is 3 days. How much of element X remains after 15 days have passed?
12.5g
25g
50g
100g
Cerium-143 is a radioactive isotope that decays to produce praseodymium-143. The half-life for cerium-143 is approximately 33 hours. If 12.5 g cerium-143 remains from a 100-g sample, which statement is true? Select all that apply.
Cerium - 143 decayed for 132 hours.
Cerium-143 decayed for 166 hours.
Cerium-143 decayed for 99 hours.
Two half-lives have passed.
Three half-lives have passed.
A sample of polonium-210 has an initial mass of 390 milligrams (mg). If the half-life of polonium-210 is 36 days, how many mg of the sample remains after 72 days?
392mg
195mg
97.5mg
48.75mg
The graph shows the rate at which Carbon-14 decays over time.
According to the graph, what is the half-life of Carbon-14?
5700 years
11,400 years
17,100 years
22,800 years
