Glossary (Version 8.4)

Previously encountered in prior learning activities.

Tools used in the field to measure and record environmental parameters including light meters, weather stations, electromagnetic induction (EMI) meters, magnetometers and radioactivity sensors.

Observational research undertaken in the normal environment of the subject of the study.

Four fundamental forces have been identified. They are, in order from strongest to weakest, the strong, electromagnetic, weak and gravity forces.