| A | B |
|---|
| concave lens | lens thiner in the middle |
| convex lens | len thicker in the middle |
| concave mirror | creates upside down image |
| convex mirror | creates smaller far away images |
| diaphram | controls amount of light |
| compound microscope | uses 2 lenses to magnify image |
| refracting telescope | uses glass lenses to collect and focus light |
| reflecting telescope | uses mirrors to collect and focus light |
| binoculars | uses prisms to shorten focal lenght |
| focal point | where the image becomes clear |
| diffusion | movement from high to low concentration |
| displace | to move fluid out of the way |
| distillation | separate solute, solvent and keeping both |
| driven gear | moves opposite direction than driver |
| driver gear | main gear; turned first |
| dissolving | solute into solvent |
| efficiency | work input vs work output |
| effort arm | fulcrum to effort force |
| effort force | force supplied to machine |
| electromagnetic spectrum | wavelengths of energy; including light |
