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____ is a form of energy measured in joules.
___________ describes how hot or cold an object is.
Temperature is usually measured in degrees _______.
Heat is a form of energy measured in ______.
_______ energy is another name for heat energy.
The bigger the difference in temperature, the faster the heat is ___________.
A _________ is a material which lets energy flow through it easily.
When heat energy travels through solids , this is called __________.
A _________ is a material which does not let energy flow through it easily.
A solid may ______ when it gets hot (gets bigger).
When a solid cools down the particles move more slowly and the solid _________ (gets smaller).