WorksheetsUnit 5 - Interactions with Matter
Total questions: 24
Worksheet time: 14mins
"Photoelectric" interaction happens from:
EMR
Particles
"Ionization" interaction happens from:
EMR
Particles
"Excitation" interaction happens from:
EMR
Particles
"Pair Production" interaction happens from:
EMR
Particles
"Compton" interaction happens from:
EMR
Particles
"Bremsstrahlung" interaction happens from:
EMR
Particles
Bremsstrahlung is most likely to occur if a particle is somewhere in the inner electrons of the atom.
True
False
What is likely to happen when an alpha particle comes close to the end of its path.
it starts speeding up
less ionization because it has lost a lot of energy
more ionization because it is in contact with matter longer
it loses its charge and does not ionize as much
How would you describe the initial path of an alpha particle through matter.
curved, but a smooth curve
tortuous
straight but occasionally bent when it hits an electron or a nucleus
straight but occasionally bent when it hits a nucleus
The energy of the ejected electron in a photoelectric effect has the same amount of energy as the particle that hit it.
True
False
The energy of the incident photon in the Compton effect must equal the energy of the Compton electron and the energy of the scattered photon.
True
False
There must be at least 0.511 MeV in order for pair production occurs.
True
False
The Compton effect is not influenced significantly by the angle of impact.
True
False
The electron produced from pair production ultimately participates in an annihilation process.
True
False
If one alpha particle A is 12 Å away from a nucleus and another alpha particle B is 3 Å from another nucleus, alpha particle B experiences 4 times more Coulombic force.
True
False
The photoelectric effect increases as Z:
Decreases
Increases
Stays Constant
With the photoelectric effect, the KE of the ejected electron is equal to
KEejected electron = Eincident photon - E (a) ?
With the Compton effect,
KEscattered electron = Eincident photon - E (a) ?
The Photoelectric effect is more likely to happen with _____energy photons
Low
Medium
High
The Compton effect is more likely to happen with _____energy photons
Low
Medium
High
Beta particle A is 50 Å away from a 10+ charged nucleus. Beta particle B is 50 Å away from a 50+ charged nucleus. How many times stronger is the magnitude of the electric force of one compared to the other?
(a)
Beta particle A is 30 Å away from a 50+ charged nucleus. Beta particle B is 10 Å away from a 50+ charged nucleus. How many times stronger is the magnitude of the electric force compared to the other?
(a)
An electron that has been ejected due to an interaction with radiation particles that goes on to do its own ionizing is called (a) .
Given the same energy, which particle will travel farther in matter, a proton or an electron?
Proton
Electron
