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4th grade sci ch 5
Question | Answer |
---|---|
crust | the thin layer of rock that covers Earth's surface. |
humus | a material in soil made up a decayed plants and animals. |
landform | natural land feature on Earth's surface ex. island or mountain |
texture | the feel of soil based on the size of its particles |
weathering | process of rocks in Earth's crust slowly being broken into smaller pieces |
loam | a soil mixture of sand, silt, clay, humus, air, and water. |
pollution | process of rocks in Earth's crust slowly being broken into smaller pieces. |
nonrenewable resource | resource that exists in limited amounts or is used faster than it can be replaced in nature. |
erosion | process of carrying away weather bits of rock |
reclamation | process of restoring land after it has been used. |
ore | a rock that is rich in valuable minerals |
deposition | the laying down of pieces of rock that have been weathered and eroded. |
conservation | using what you need as efficiently as possible |
renewable resource | a resource that can be replaced |