| A | B |
| sonar | sound navigation ranging |
| scuba | self-contained underwater breathing apparatus |
| biologist | one who studies living organisms |
| Woods Hole | first major American marine laboratory |
| scientific method | set of procedures that scientists use to learn about the world |
| observation | learning about the world through our senses |
| induction | use observations to arrive at general principles |
| deduction | reasoning from general principles to specific conclusions |
| hypothesis | a statement that might be true |
| variables | factors that might affect observations |
| scientific theory | a comprehensive explanation of observations of how the world works |