Earth
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| What's soil made of? | weathered rock particles, organic mater, air, water
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| What's humus made of? | decayed organic matierials in soil
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| Tropical Climates | humus thin and low in minerals, not good for crops
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| Soil Horizon | layered soil each with different characteristics
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| Horizon A | upper soil layer: weathered rock particles and organic matter
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| Horizon B | subsoil: mostly clay
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| Horizon C | mostly rocks
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| Climate Soil | soils with different characteristics because of climate
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| Types of Climate Soil | tropical, desert, temperate, arctic
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| Plants | provide organic matter
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| Animals | loosen and mix soil
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| Microorganisms | decompose dead (plants/animals) matter and provide nutrients
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| Sedimentary Rocks | Formed by pieces of older rock mineral or plant remains.
The formation depends on weathering AND erosion.
Most fossils are sound here.
Are formed in layers with oldest at bottom.
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| Igneous Rock | forms when molten rock cools and becomes a solid
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| Metamorphic Rock | forms when heat and/or pressure causes older rocks to change into new types of rocks
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
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To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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Created by:
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