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Energy

Across
The circulation of particles
To make hot
This is the center of an atom
A current created by wrapping a wire around a core
A measure of how difficult it is for electricity to flow in a material (2 words)
To remove air from a space; empty space
You use this to change the temperature in your house
A simple machine that consists of a bar that pivots or rotates
Down
The transfer of thermal energy due to collisions between particals
The ratio of output work to input work
How cold or warm it is
You store cold food in it
A machine to lift items
You _____ your smartphone
A simple machine that consists of an inclined plane wrapped around a cylinder