| A | B |
|---|
| angle of incidence | between normal line and incident ray |
| archimedes' principle | bouyant force= weight of displaced fluid |
| density | mass/volume |
| pressure | force/area |
| bioluminescence | llight from living things |
| buoyancy | rise or float in fluids |
| fluids | flow; take on shape of container |
| cell wall | "skeleton" of plant cell |
| chemiluminescence | light from chemical reactions, no heat |
| cell membrane | semipermeable; protects cell |
| circulatory system | hyraulic system in body |
| chloroplast | organelle for photosynthesis |
| mitochondria | organelle for energy |
| nucleus | organelle for control |
| class 1 lever | fulcrum in middle |
| class 2 lever | load in middle |
| class 3 lever | effort in middle |
| compound pully | fixed plus movable |
| compressible | ability to be squeezed |
| control | variable that stays the same |
