SCMH 1010 Training Exam 2 Questions Solved Correctly.
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Course
SCMH 1010
Institution
SCMH 1010
properties of a nucleus - Answer protons, neutrons, held together with the 'strong force', nucleus gives atom its mass
atomic number - Answer number of protons in nucleus
- dictates the arrangement of electrons
- defines chemical behavior
- defines the atomic basis of elements
mass ...
SCMH 1010 Training Exam 2 Questions
Solved Correctly.
properties of a nucleus - Answer protons, neutrons, held together with the 'strong force', nucleus gives
atom its mass
atomic number - Answer number of protons in nucleus
- dictates the arrangement of electrons
- defines chemical behavior
- defines the atomic basis of elements
mass number - Answer total protons and neutrons
isotopes - Answer all elements are isotopes
- elements with different numbers of neutrons
- some are highly radioactive; many are slightly radioactive, some are stable and not radioactive
what is radioactivity? - Answer the spontaneous decay of nuclei
- radiation can be electrons, subatomic particles, high energy electromagnetic waves like x-rays
Geiger counter - Answer can be used to detect radioactivity, typically hand-held
Gamma counters - Answer count gamma particles directly: high energy photons
liquid scintillation counters - Answer look at flashes of light in solutions of fluorescent compounds that
amplify the strength of weak radiation
Battery - Answer Developed by Alessandro Volta
Converts chemical energy to kinetic
, Electrical Currents flow through dissimilar metals to make a circuit
Electric circuit - Answer Unbroken path of material carrying electricity.
Source, device, and closed path
Ohm's Law - Answer I x R = V
Current times resistance equals voltage.
Definition of Wave - Answer traveling distance that carries energy but does not result in the overall
displacement of matter/mass
Types of waves: - Answer V (velocity) as always is delta x / delta t. i.e. (difference in location as a
function of difference in time - same as distance per unit time)
Wavelength = (λ) measured in distance
Frequency = (f ) measured in (cycles) per second; cycles/s or s-1. Also measured in Hertz.
The Period = (1/ f ). Literally seconds per cycle; time between waves
Wavelength measured in... - Answer distance by meters
Velocity is measured in... - Answer Delta X divided by Delta T
Meters/Second
Frequency measured in... - Answer cycles per second - Hertz
What is amplitude - Answer the height of the wave crest above the undisturbed position
How is energy is transferred - Answer particle or wave
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