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37 Cards in this Set
- Front
- Back
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Convection |
Transfer of thermal energy in a fluid from one place to another |
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Conduction |
Transfer of thermal energy by collisions between particles in matter at a higher temperature and particles in matter at a lower temperature |
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Thermal insulator |
A material in which thermal energy move slowly |
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Specific heat |
Amount of thermal energy needed to rise the temperature of 1 kg of a material 1 degrees Celsius |
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Heat of fusion |
Amount of energy required to change a substance from the solid phase to the liquid phase |
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Radiation |
Transfer of thermal energy by electromagnetic waves |
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Entropy |
A measure of how spreadout, or disposed energy is |
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Heat of Vaporization |
Amount of energy required for the liquid at its boiling point to become a gas |
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Kinetic theory |
Explanation of the behavior of molecules in matter; States state that all matter is made of constantly moving particles that collide without losing energy |
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Plasma |
matter consisting of positively and negativity charged particles |
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This is not a method of heat transfer. |
Specific heat |
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State of matter, made of electrically charged particles |
Plasma |
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Convection will most likely occur though ____. |
Liquid and gases |
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This is not used to calculate change in thermal energy. |
Volume |
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Does not require the presence of particles of matter. |
Radiation |
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According to Entropy principal, I need event that occurs in the universe must cause ____ to happen |
Energy to become less concentrated |
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The measure of average kinetic energy of the particles in a material |
Temperature |
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The second law of thermodynamics states that: |
Thermal energy cannot flow from a cooler to a hotter place unless work is done |
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The state of matter are solid liquid gas and ____. |
Plasma |
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The kinetic theory explains why an object expands when it’s _____ increases |
Temperatures |
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____ are usually the best thermal insulator |
Gases |
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Liquid has a definite volume but not definite _____. |
Shape |
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What is the difference between constructive and destructive interference |
Constructive: waves add together Destructive: wave subtract from each other as they overlap |
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Amplitude |
Maximum distance a wave causes the particles in a medium to move from the rest. |
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Frequency |
The number of wavelengths that pass a fixed point each second; expressed in hertz (Hz) |
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Diffraction |
The bending of waves around an object; can also occur when waves pass through a narrow opening |
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Rare fraction |
The least dense regions of a compressional wave |
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Re-fraction |
The bending of a wave as it changes speed in moving from one medium to another |
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Medium |
Matter in which a wave travels |
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Period |
The amount time it takes one wavelength to pass it fixed; Expressed in seconds |
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Resonance |
The process of which an object is made to vibrate by absorbing energy at its natural frequency’s |
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Crest |
The highest point on a transverse wave |
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Trough |
The lowest point on a transverse wave |
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Waves do not transfer a ____ they transfer _____ |
Matter energy |
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The equation for calculating wave speed is ____ . The symbol V represents ____ , F represents, the ____, and /~ represents ____ |
V= F /~ Speed Frequency Wavelength |
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Wave speed is measured in the units ___, frequency is measured in the unit ___, and wave is measured in the unit ___. |
M/S Hertz Meters |
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Crest and troughs are found in ___ waves, while compressions and rarefractions are found in ___/___waves |
Transverse waves Compressional/longitudinal |
