Ques: Q: What is the term for the force of attraction between things that have a mass? Choices: - weight - motion - magnetism - gravity A:
Ans: gravity

Ques: Q: Which is the lightest of the widely used structural metals? Choices: - Metal - calcium - potassium - magnesium A:
Ans: magnesium

Ques: Q: What is the study of how and why plants and animals live where they do? Choices: - geomorphology - heredity - lithography - biogeography A:
Ans: biogeography

Ques: Q: Most ocean waves are caused by what? Choices: - radiation - animals - gravity - wind A:
Ans:
wind