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SALT Module 13-16
SALT AP Physical Science - Mod 13-16
| Question | Answer |
|---|---|
| Model | A schematic description of a system that accounts for its known properties |
| Nucleus | The center of an atom, containing the protons and neutrons |
| Atomic number | The number of protons in an atom |
| Mass number | The sum of the numbers of neutrons and protons in the nucleus of an atom |
| Isotopes | Atoms with the same number of protons but different numbers of neutrons |
| Element | A collection of atoms that all have the same number of protons |
| Radioactive isotope | An atom with a nucleus that is not stable |
| Half-life | The time it takes for half of the original sample of a radioactive isotope to decay |
| Transverse wave | A wave with a direction of propagation that is perpendicular to its direction of oscillation |
| Longitudinal wave | A wave with a direction of propagation that is parallel to its direction of oscillation |
| Supersonic speed | Any speed that is faster than the speed of sound in the substance of interest |
| Sonic boom | The sound produced as a result of an object traveling at or above Mach 1 |
| Pitch | An indication of how high or low a sound is, which is primarily determined by the frequency of the sound wave |
| Electromagnetic wave | A transverse wave composed of an oscillating electric field and a magnetic field that oscillates perpendicular to the electric field |
| The Law of Reflection | The angle of reflection equals the angle of incidence. |
| Nuclear fusion | The process by which two or more small nuclei fuse to make a bigger nucleus |
| Nuclear fission | The process by which a large nucleus is split into smaller nuclei |
| Critical mass | The amount of isotope necessary to sustain a chain reaction |
| Absolute magnitude | The brightness of a star, corrected for distance, on a scale of -8 to +19. The smaller the number, the brighter the star. |
| Apparent magnitude | The brightness of a star as seen in the night sky. The smaller the number, the brighter the star. |
| Light year | The distance light could travel along a straight line in one year |
| Galaxy | A large ensemble of stars, all interacting through the gravitational force and orbitingaround a common center |
Created by:
kbtarheelgirl
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