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Kinetic energy
The energy of motion.
Heat
Thermal energy or the total of all energy within a substance.
Law of Conservation of Energy
States that energy cannot be created or destroyed, only changed in form.
Solid
State of matter with the slowest motion of molecules.
Liquid
State of matter with faster motion than a solid but slower than a gas.
Gas
State of matter with the fastest motion of molecules.
Boiling point
The temperature at which a liquid becomes a gas.
Freezing point
The temperature at which a liquid becomes a solid.
Specific heat capacity
The amount of heat required to raise the temperature of 1 gram of a substance by 1 degree Celsius.
Joules
Unit of energy.
Heat transfer
The transfer of thermal energy from areas of high temperature to low temperature.
Frictional force
The force that prevents two objects from easily moving against each other.
Acceleration
The rate at which an object changes velocity.
Positive acceleration
Speed increases as the object moves away from its starting position.
Negative acceleration
Speed decreases as the object moves away from its starting position.
Coefficient of friction
A number that describes the degree of mechanical and molecular interaction between forces.
Applied force
Force applied to an object from an outside force.
Standing waves
Waves that form in a vibrating object and do not move through space.
Frequency
The back and forth vibrations that cause sound to occur rapidly or slowly.
Pitch
The perceived highness or lowness of a sound.
Standing wave
A wave with two nodes (beginning and end) and two antinodes (one up, one down).
wavelength
the length in meters of a complete standing wave from the node that defines where it begins to the node that defines where it ends
high pitch
low frequency = ?
low pitch
high frequency = ?
nodes
the two end points
antinodes
middle points; one on top, one on bottom
less friction
if there’s a smoother surface, there is…
more friction
if there’s a rougher surface, there is…
low frequency
when there is a long wavelength there’s a…
high frequency
when there is a short wavelength there’s a…
HIGH frequency
vibrations occur frequently
LOW frequency
vibrations occur infrequently
more weight, more friction
relationship between weight and friction
greater speed of sound
greater attraction between particles = ?
less speed of sound
less attraction between particles = ?
hertz
the unit of frequency in 1/second
Mrs Frizzle’s dress
green w lighthouses, Christmas lights, and light bulbs
Mrs. Frizzle’s shoes + earrings
lamp earrings that light up; sun shoes that light up
Note
Flashcard