Vocabulary
The total kinetic and potential energy of all the particles in an object
thermal energy
Three common states of matter
solid, liquid, and gas
In order for the computer to light up in a home, electrical energy has to transfer to
electromagnetic radiation
materials that do not conduct heat well
insulators
Any disturbance that transfers energy from place to place
wave
neither a definite shape nor a definite volume
gas
The law of conversation of energy states:
Energy cannot be lost or created
All physical processes will always include
energy
The expanding of matter when it is heated is known as
thermal expansion
a wave that travels through electromagnetic radiation
electromagnetic wave
a measure of the average kinetic energy of the particles in a substance
temperature
Different objects at the same __________ can have different amounts of thermal energy
temperature
Heat will never just ___________ in random directions
transfer
How much energy is lost by 2.1 kg of water (200) that cools off by 5 K.
2,100 J
Waves that move the medium at right angles to the direction in which the waves are traveling
transverse wave
a type of heat transfer that occurs through the movement of fluids, which can be solid, liquid, or gas
convection
Thermal energy is the total energy of all the particles in a substance. Heat is energy that is __________.
transferred
Heat is transferred from warmer areas to cooler areas by
conduction, convection and radiation.
how much energy is lost by 9.2 kg of iron (420) that cools off by 9 K.
34,776 J
the maximum distance the particles of the medium carrying the wave move away from the rest of the positions
amplitude
the transfer of heat from one particle of matter to another within an object or between two objects that are in direct contact
conduction
How can a substance lose energy without breaking the law of conservation of energy?
The substance can transfer energy to another place in the system so that one substance can lose energy while the other substance gain energy. So the total energy is conserved.
Cooler air will flow into its place, heat up and ________.
rise
The amount of energy required to raise the temperature of 1 kilogram of a material by 1 kelvin is called its
Specific Heat
The speed, wavelength, and frequency of a wave are related to each other by a mathematical formula. What is the formula?
Speed = wavelength x frequency
Frequency = speed/wavelength
Wavelength = speed/frequency