Midterm
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Radioactivity | A substance that spontaneously emits energy
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| Alpha Particle | same as a helium nucleus. 2 neutrons and 2 protons . Have large mass but can be stopped by paper. Radon is an alpha particle emitter
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| Beta Particle | One of the neutrons within the nucleus is converted into a proton and an electron is ejected. Escaping electron is the beta particle
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| Gamma Particle | High energy EM photon from the nucleus. IT is not in the visible part of the EM spectrum.
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| Radioactive Half-Life | Time for half of the isotope to decay. Radioisotopes disintegrate into stable isotopes
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| Hertz | Measurement of frequency. Occurrence/time. Cycle/S. Hz= 1/s. Hz= s^-1
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| Electromagnetic Spectrum | R.M.I.V.U.X.G
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| Wave equation | Velocity= frequency (U symbol ) x wavelength (lamda L)
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| Wave equation alternatives | C=U x L, F=U/L, L=C/U. For the pyramid, C is on top, U(frequency) bottom left, L(lambda) is bottom right
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| Energy is the photon is _____ proportional to its frequency | directly. High frequency= high energy
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| The energy of a photon is ______ proportional to its wavelength | inversely. Short wavelength= low energy
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| Radiofrequency | Usually described in terms of frequency (Hz). Rf waves have very low energy and long wavelength. Used in MRI. Overlap on the EM spectrum with microwaves.
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| Ionizing Radiation | Characterized by the energy contained in a photon. Much higher energy levels than RF or visible light photons
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| Ionizing Radiation Attenuation | Reduction in intensity resulting from SCATTER and ABSORPTION.
Radiopaque (Absorb photons). Radiolucent/Radioparent (gowns, tape, hair.) Absorbing so there is LESS photons.
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| Planck's Quantum Equation | E=hU. E is the photon energy. h is planck's constant, and U is the photon frequency in hertz
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| Exponent, decimal rule | Each time we move the decimal point one place to the left, the exponent increases by 1.
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To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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Created by:
Djneil12
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