F.C. Radioactivity--Unit 1 Physics (G9)

What's in the nucleus of an atom?

What is orbiting around the outside?

Who can up with the 'Plum Pudding' model? In what year?

What did Ernest Rutherford do? What did it consist of?

What happened during Rutherford's experiment?

What later on happened to Thomson's model?

What is the mass number?

What is the atomic number?

What are isotopes?

Give example of types of isotopes.

Give example of types of isotopes.

Give some uses of Radioactive Isotopes.

What is nuclear fission?

If the nucleus DOES capture a neutron, what may happen?

What is the missing mass?

Possibilities of CHAIN REACTIONS for neutron bombardment

Who was Henri Becquerel and what did he discover, and when?

What did Marie Curie and her husband,Pierre, discover?

Who else was involved in this?

What was used in Rutherford's experiment?

What did he find?

What are the 3 types of radiation?

Is the alpha particle: positive or negative?

How far can a beta particle penetrate? What can stop it?

What speed do alpha particles move at?

How far can an alpha particle penetrate? What can stop it?

Are gamma ray's particles? T or F

What are they?

Gamma rays move at the speed of light. T or F

What does meta stable mean?

Alpha particles have Helium nuclei, what type of decay do they undergo?

What can stop the penetration of gamma rays?

Gamma rays can be FULLY ABSORBED. T or F

What are the sizes of alpha & beta particles, and gamma rays?

What is 'half-life?'

What will the half-life for a given isotope be?

what is the half-life for radioactive isotopes?

To show radioisotopes decay use a pictograph. True or False

What are the main parts of a thermal nuclear reactors?

Name the typical substances that are used as moderators.

What is a control rod used for?

What is the purpose of coolant?

Some of the heat can be used as an exchange to spin the turbines for electricity. T or F

What are the radioactive substances stored in?

Why are the 2 pieces of sub-critical Uranium-235 kept separate until activation?

The 2 sub-critical pieces of Uranium-235 are put together and become a...

Why are they brought together when it is time to detonate?

What is Nuclear Fusion?

What is in a burning in stars and how much of it?

What are fusion reactions?

What is needed to overcome the repulsion and get a fusion of 2+ charged neutrons?

Where does this happen?

What are the advantages of NUCLEAR FUSION??

How do you COMPLETELY stop a nuclear reactor for an emergency?

What element is needed the most nuclear fission reactors?

What percentage of uranium does nuclear fission need to continue the reaction?

How much does naturally occurring Uranium consist of?

The pellets of enriched Uranium-235 are contained in rods of steel. T or F

How much have the Uranium-235 been enriched?

What are control rods made of?

Why do the reactors had radiation shields?

350 degrees Celsius is when water boils in an reactor. T or F

What has to take place in thermal nuclear power stations in order to generate electricity?