Science lectures

TOEFL vocabulary · English · Unit 2

• theory n.: Ideas intended to explain how or why something happens
• evidence n., v.: Facts or signs that show something is true
• organism n.: an individual living thing
• geology n.: the study of Earth's rocks, structure, and history
• sediment n.: solid material that settles at the bottom of a liquid
• ecosystem n.: living things and their environment interacting together
• adaptation n.: a change or feature that suits new conditions
• species n.: A group of similar living things that can breed
• particle n.: a very small piece of something
• orbit n., v.: a curved path around a planet, star, or other body
• specimen n.: an example or sample used for study or display
• glacier n.: a large mass of ice that moves slowly over land