Vocabulary

What is a mineral?

• a) A type of rock formed by volcanic activity

• b) A naturally occurring solid substance with a defined chemical structure

• c) A form of energy that powers the Earth's atmosphere
  

• d) A type of soil used for agricultural purposes

Which of the following is an example of a mineral deposit?

• a) A glacier

• b) A layer of sediment in a river

• c) A concentrated accumulation of valuable minerals in the Earth
  

• d) A plant growing in a forest

Erosion refers to the process of:

• a) The formation of new mountains through volcanic activity
  

• b) The movement and transportation of soil, rocks, and minerals by wind, water, or ice
  

• c) The cooling of lava to form solid rock
  

• d) The growth of plants over rocky surfaces

Which of the following is an example of a principle in science?

• a) The law of gravity
  

• b) A chemical reaction
  

• c) The concept of photosynthesis
  

• d) A theory about animal behavior

Particles are best described as:

• a) Large masses of rock
  

• b) Small units of matter that make up substances
  

• c) The remains of plants and animals
  

• d) Solid materials found only in minerals

What causes the erosion of rocks over time?

• a) High temperatures in the Earth's core
  

• b) The force of gravity
  

• c) Wind, water, and ice continuously wearing down the rocks
  

• d) The chemical composition of the rocks themselves