Mid summative 1 answers 2010
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![Page 1: Mid summative 1 answers 2010](https://reader035.fdocuments.us/reader035/viewer/2022062220/5558eda4d8b42ab8168b52b9/html5/thumbnails/1.jpg)
There are labels on the containers
Observation
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All of the seeds were planted on
the same day
Inference
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Some of the plants were taller
than others
Observation
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They put different
amounts of salt in the containers
Inference
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One container has smaller plants
because it has the most salt
Inference
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This experiment is to determine how salt affects plant
growth
Inference
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The students are pleased with the
way the experiment is turning out
Inference
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Limestone•Reacts to acid test by fizzing due to presence of calcite
•Rock #’s 11, 15
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Sandstone•Rock made of grains of sands “glued” together
•Rock #’s 13, 16
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Shale•Smooth rock, does not react with acid
•Rock #’s 12, 14
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Erosion and Deposition
•Erosion: The wearing away of earth’s materials via water, wind, ice or gravity
•Deposition: Sediment that is eroded is then “deposited” or put down someplace. This sediment eventually hardens and becomes sedimentary rock
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Observation and Inference
Observation InferenceSeveral different colored layers
X
Contained calcite XEnvironment when formed was a marine one
X
Reacted with acid x
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Limestone
• Knew that it was limestone because it reacted with acid; sandstone and shale don’t react
• Layers and shell fossils were also good indicators
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Erosion
• Water: flowing water carries away particles of sediment and carves away the land
• Ice: water seeps into rocks and freezes which, over time, causes the rocks to split
• Wind: wind picks up small particles and carries them away
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Rock correlation• Mile 21
– Supai Sandstone
• Mile 41– Muav
limestone
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Mile 35
Muav Limestone
because it is directly below
Redwall Limestone