Odds and Ends for Final Exam Flashcards
Specific Heat
(Also known as Specific Heat Capacity)
A number that describes how difficult it is to raise the temperature of a substance.
(Water is well known for its high specific heat. That is why we use it in car radiators.)
For sound, what is the relationship between frequency and pitch.
Higher frequency = Higher pitch
Lower frequency = Lower pitch
Resonance
When an object is forced to vibrate at its natural frequency.
(The vibration can get quite big)
(You can shatter a wine glass with resonance if you can sing a note at the same frequency as the natural frequency of the wine glass.)
What happens to the mass of water when it changes from liquid to solid?
Stays the same.
(Still the same number of atoms)
What happens to the volume of water when it changes from liquid to solid?
Volume goes up.
(Water expands when it freezes)
What happens to the density of water when it changes from liquid to solid?
Density goes down.
(Water expands when it freezes, but its mass stays the same. As a result, its density goes down. This is why ice floats.)
What is the difference between heat and temperature.
Heat is thermal energy
Temperature is the measurement of average kinetic energy of the particles
What is the exact definition of temperature?
The average kinetic energy of the particles of a substance.
The average kinetic energy of the particles of a substance.
What is the exact definition of temperature?
What is the definition of heat?
Thermal energy on the move.
Thermal energy on the move.
What is the definition of heat?
Definition of Thermal Energy
The total potential and kinetic energy of the particles of a substance.
(The kinetic is in the motion)
(The potential is in the phase)
The total potential and kinetic energy of the particles of a substance.
(The kinetic is in the motion)
(The potential is in the phase)
Definition of Thermal Energy
What is a greenhouse?
A glass building where plants are kept.
The sun shines through the glass and the radiant energy is converted to thermal energy to keep the plants warm.
What is the only thing you need to know to be able to predict which way thermal energy will flow between two objects that are touching each other.
You only need to know which object has a higher temperature.
