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38 Cards in this Set
- Front
- Back
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Energy can make things___.
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move
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Two kinds of energy are ____ and ____.
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electricity and heat
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Heat is caused by _______.
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vibrating molecules
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All matter has ____.
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heat
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All matter has heat because molecules are always____.
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vibrating
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warm matter has ___ heat than cold matter
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more
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the faster molecules vibrate, the _____ heat they give off
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more
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most heat comes from the ___.
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sun
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rubbing produces heat. Another name for rubbing is ___.
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friction
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Does ice have heat?
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yes
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What do me measure heat with?
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thermometer
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Temperature tells us how fast molecules vibrate. T/F
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T
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What is a measure of temperature?
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degree
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What is a meausure of heat?
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calorie
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What depends on how fast and how many molecules vibrate?
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heat
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What depends upon how fast molecules vibrate?
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temperature
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Are temperature and heat the same?
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no
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What is kinetic energy?
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Energy produced by friction.
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What is chemical energy to electrical energy?
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When energy in chemicals are changed into electrical energy.
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Matter is anything the occupies ___and ___.
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space and mass
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Particles ____ each other when they are a little distance apart but ___ each other when they are squeezed closer together.
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attract repel
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Particles in most solids are held together closely by strong ___ forces.
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attractive
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The particles in most liquids are not as close together as they are in solids. The attractive forces are ___ than those in solids.
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weaker
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Heat is a form of energy associated with the _____ of molecules.
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motion
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Heat depends on how ____ molecules vibrate (temperature) and how many ___ vibrate.
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fast molecules
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Temperature is a measure of the ___ with which the molecules in a substance are, on average, moving.
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speed
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The fast molecules vibrate the ___ the temperature.
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higher
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heat (j)= mass(g) X specific heat capacity X change in temperature (C)
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e=mxcx(triangle)t
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Conduction is when energy travels through ____.
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solids
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Convection is when energy travels through _____.
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liquids and gases
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Radiation is when heat energy is transferred through ____,
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space
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Particle Theory
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the higher the temperature the faster the particles are moving
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Waves can be
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reflected, absorbed and transmitted
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Insulators are substances which are ____ conductors of heat
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poor
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Conductors are substances which conduct heat ____
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well
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heat energy is measured in _____
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joules
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heat energy flows from high temperature to ___ temperature
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low
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The amount of engery transferred depends on ______in temperature, ______ of a stubstance and type of _____
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difference volume material
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