Question | Answer |
mineral | material that forms in the earth from nonliving matter |
fossil | the hardened parts or mark left by an organism that lived a long time ago |
fuel | a material that can be burned to produce useful heat |
natural resource | a material that comes from the earth and can be used by living things |
ore | rock that has a large amount of useful mineral |
nutrient | a material that plants and animals need to live and grow |
decay | to slowly break down or rot |
humus | decayed organisms in the soil |
loam | good planting soil that is a mixture of sand, silt , clay and humus |
sandy soil | loose soil with large grains |
recycle | to change something so it can be used again |
landfill | a place where garbage is buried in the soil |
conserve | to keep something from being used up |
clay soil | soil with tiny grains that are packed closely together |
What are rocks made of ? | minerals |
How do fossils form in rocks? | parts of a dead organism decay in mud or sand. Over many years, the mud turns into rock. Then just the mark remains where the organism was pressed into the rock. |
Why are some fuels called fossil fuels? | they formed from organisms that lived hundreds of millions of years ago. |
What are some materials that are made from natural resources? | Some rocks are used in buildings, glass and metals are made from minerals, steel is made from iron ore. |
What materials make up the soil? | rock, water, air, material once alive |
Why is soil important to living things? | Plants need the soil to grow. Animals eat plants. Some animals live in the soil. People eat plants and animals. |
Describe the 3 main kinds of soil. | clay soil, loam and sandy soil |
How can recycling help protect soil? | we can recycle materials such as newspaper, cans, plastic bags and bottles so as not to fill the landfills. |
What are some ways to conserve water? | turn off water when you brush your teeth.
take short showers instead of baths.
fill tub only half way.
check faucets for leaks.
sweep sidewalks with a broom instead of water and a hose. |