Welcome to Nuclear Science On-Line Quizzes
March 31, 2004: Due to the large number of students have not completed
quizzes 5 - 9, and some requests of extension, I am extending the deadline
for quizzes till Sunday April 4, 18:00 HR. The reason for not extending
any later is to be fair for all, because examination will start April 5.
A good sleep is important if you need to write an exam the next day.
On Saturday and Sunday, the system may go down. I will look at the system
from time to time, and try to fix it if necessary. To be save, you are still
encouraged to write quizzes before April 2, before 16:30, because before
this time, we will try to fix the system immediately if the system goes down.
March 25, 2004: One student pointed out that I did not list the lecture
Power Point for nuclear reactors. I have added it on March 25, in case you
have not noticed it before. Please take a look.
March 18, 2004: Science Faculty Lectures end on April 2, 2004, and SCI 270
lectures will be given on March 24 and 31.
Please use Nuc Sci to start your Subject in your e-mail. Otherwise your
e-mail may not be read due to massive SPAM and Virus these days.
Set deadlines yourself as part of your learning schedule. That said, quizzes
for the Winter-2004 class are now ready for you to try!
Quizzes whose topics are to be tested in Midterm Test must be written before
the Midterm Test, and the rest quizzes must be written before lectures end
on April 2.
After a quiz, assess your strength and weakness. Please find ways to
improve your learning rather than trying to maximize your quiz mark.
Your quiz marks are expected to be consistent with your examination marks.
If your computer freezes or you suspect your quiz mark not properly
recorded, please write the quiz again. If the computer system does
not allow you to write, your mark has been recorded.
Usually, a mark is assigned according to the performance at the time.
Writing a quiz is a performance. A mark is assigned with certain rules,
not just providing an answer. Certain procedures must be implemented in
quizzes over the Internet in order to be fair to all students. Please
follow the procedures.
Please be patient during your quiz. The information goes through a
very complicated process over the Internet.
Click your Submit Answer button once. Do not double click it.
Clicking more than once results in losing marks.
If you have difficulty with a quiz, please immediately E-mail
and tell him your difficulty. Please include your ID number regarding
There nine (9) quizzes and one of the worst marks will be ignored from
Questions and Answers on Quizzes
summarize difficulties some students have had. Read it to avoid
the same difficulties.
- explain the concept of energy
- interconvert mechanical energy and heat
- describe temperature and heat
- evaluate electric energy
- interconvert power and energy
- explain sound
- evaluate energy of electromagnetic radiations
- interconvert mass and energy
Natural units and atomic spectroscopy
- identify natural units
- apply atomic and molecular weight, Avogadro's number and moles in calculations
- describe charges and properties of electrons
- explain spectra
- interpret the hydrogen spectra
Discoveries of X-rays and radioactivity, and atomic structures
- discovery of X-rays
- Moseley's law and atomic structures
- discovery of radioactivity
- Rutherford's and Bohr's atomic model
- quantum mechanical concepts
- nucleons and nuclide
- summarize the standard model
- know units of radioactivity
- calculate number of atoms in a sample
- evaluate radioActivity A, half_life, t1/2,
decay constant dk
and amounts of samples using
A = dk * number_of_atoms
Know the relationsip between decay_constant and half_life
- be able to calculate radioactivity as a function of time
- write equations for transmutation of nuclides in decay processes
- the four families of decay series
- explain internal conversion, Auger electrons, isomeric transitions etc.
- transmutation of nuclides
- estimate decay energy, including the maximum kinetic energy of beta particles
Particles and Nuclides - energy states
Particles - energy states
- describe the concept of particles and antiparticles
- explain energy aspects of particles and antiparticles
- explain how positron was discovered
- specify properties of antiparticles - particularly positrons
- explain annihilation reactions
- describe the standard model in terms of fundamental particles
- show organization and components of mesons
- forces and force carriers
- understand Fynman diagrams
Nuclides - energy states
- evaluate the binding energy (BE) of a nuclide
- tell nuclide with zero BE
- evaluate mass excess (ME) of a nuclide
- tell nuclide with zero ME
- evaluate decay energy
- estimate decay mode
- predict the stable isobar(s)
- estimate max kinetic energy of beta or positrons in beta decay
Nuclear Reactions - changing the hearts of atoms
- nuclear reactions, notations and changes
- potential energy during a nuclear reaction
- apply conservations of nucleon and charges to nuclear reactions
- explain nuclear-reaction experiments
- evaluate cross sections, reaction rates, and beam intensities
- estimate energies in nuclear reactions
Nuclear Fission - energy for war and peace
- discovery of n-induced fission, fission products, fission energy,
fission crossections, nuclear model for fission
- estimate (calculate) fission energy for certain fission products
- nuclear reactors, types, moderator, control rod, fission yield
- estimate quantities of natural uranium required for the production
of fission fuel
- natural nuclear reactor, reactor accidents, and their impacts
Nuclear Fusion - powering the universe
- fusion reaction
- estimate fusion energy
- fusion cross section of various fusion reactions
- fusion in stars and life of stars
- plasma and fusion
- fusion bombs and fusion research
Ionizing Radiation and Safety
Lectures end April 4, 2002 for Science Faculty Courses
- identify ionizing radiation
- describe interaction of ionizing radiation with matter
- define stopping power, range, annihilation, bremsstrahlung radiation, Compton effect etc.
- estimate speed from energy of particles and relativity mass
- describe the mechanisms by which high-energy electrons and gamma rays lose energy
- describe how ionization, proportional, and Geiger-Muller detectors work
- explain how solid state detectors and scintillation detectors work
- explain how cloud and bubble chambers work and what they are used for
Dose Units and Radiation Safety
- explain symptoms of low- and high-dose ionizing radiation sickness
- describe somatic effects, genetic effects, transcription, translocation, translation, etc.
- briefly explain human cells, chromosomes, and the function of DNA molecules
- define units for radioactivity, exposure dose, quality factor and biological dose
- calculate exposure and biological doses (Gy, rad, Sv, rem etc) from given conditions
- give an example of a chemical dosimeters