Chapter 6 Saving earth's resources

A natural, nonliving material that makes up rock is called ____________.

What is the hardest mineral?

A type of rock that forms when particles from other rocks or the remains of plants & animals are pressed together

Rock that is formed when melted rock cools is called a ___________?

Where would you find igneous rock?

A trace of an organism that lived in the past

What type of rocks are fossils found in?

Sap that hardens and sometimes contains fossils is called

What is the process where rocks continually change over a long period of time from one type of rock to another?

Rock that is formed from another kind of rock through heat and pressure is a ___________?

What is the trace or remains of an organism that lived long ago, most commonly preserved in sedimentary rock?

What is the organism that lived long ago, most commonly preserved in sedimentary rock?

What is an energy source that formed millions of years ago?

What is materials found in the Earth that people need and value?

What is a resource that cannot be reused or replaced easily (ex. gems, iron, copper, fossil fuels)?

What is a resource that can be replaced easily

Which of the following in NOT a renewable resource?

Protecting resources and using them wisely is known as_________.

wind energy, water energy, solar energy

Fossil fuels are __________

The decayed remains of once-living creatures is called ________?

Scientists use a ____________ to study the layers of soil, called horizons, which form over time.

What is soil made of?

Layers of soil is called _________?

What is the mixture of humus, clay, and other minerals that forms the crumbly, topmost layer of soil?

What is the ability of rock or soil to allow water to flow through it?

What is the spaces in the soil that determine how much water and air the soil can hold?

Which type of soil is more porous?

Which type of soil that we plant crops in?

A storage area for holding fresh water is a _____________?

Harmful or unwanted material that has been added to the environment is called __________?

Where is most of the Earth's fresh water stored?

Where can you find fresh water?

water that fills the cracks and spaces in underground soil and rock layers is called _____________?

What is a releasing of harmful materials into the environment?

To use less of something is __________.

The process of reusing a product without changing the produce!

To make new objects or materials from old objects or materials

We can ______ materials like glass and paper.