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Soil and Rocks

Review for unit tests on rocks, minerals and soil

QuestionAnswer
Give 3 reasons why the Dust Bowl occurred. over-farming, drought conditions, high winds, removal of praire plants
How can rocks form? break down into sediments form over time from different rocks can change from sedimentary to metamorphic
What are the different ways that soil can be described? color consistence texture
If the soil consistence is firm what does that mean? Need to use 2 fingers to break it apart
If the soil is loose? falls apart when picked up
List the different properties of a mineral. reaction to acid color streak color transparency light refraction
List the lays of soil. topsoil subsoil parent material bedrock
Where do plants and trees grow? topsoil
Give reasons why a manufactured fertilizer is better than organic. replaces missing nutrients difficult to wash away fast release of chemicals
What is the texture of clay? gummy sticky
What is the texture of silt? soft silky
What is the hardest mineral on the Mohn's Hardness Scale? What is that number? Diamond 10
Can Talc scratch Diamond? No because Talc is too soft.
List the 3 different types of rocks. igneous sedimentary metamorphic
Which type of rock can fossils be found? sedimentary
Which type of rock is glassy? igneous
Which type of rock can have bands of color? metamorphic
Is.... Jody thinks the plant will grow. a scientific observation no
Is.... the plant grew 2cm a scientific observation yes
list the particles from largest to smallest silt, clay, sand sand, silt, clay
What type of soil is mostly in the USA? forest soil
List the ingredients in topsoil. rock, sand, silt, clay, organic matter, air and water
What is organic matter? breaks down into nutrients made of decomposing plants and animals
Created by: djfamily3
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