2nd 9 Weeks Science Review Created and modified 1/3/2012 By: C. Horejsi.
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Transcript of 2nd 9 Weeks Science Review Created and modified 1/3/2012 By: C. Horejsi.
![Page 1: 2nd 9 Weeks Science Review Created and modified 1/3/2012 By: C. Horejsi.](https://reader030.fdocuments.us/reader030/viewer/2022032605/56649e865503460f94b89309/html5/thumbnails/1.jpg)
2nd 9 Weeks Science Review
Created and modified1/3/2012
By: C. Horejsi
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The glacier moves down the valley and causes erosion and wearing away of the rock and soil
underneath the ice.
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Constructive – build up of sand
Destructive – wearing away
Destructive – wearing away
Destructive – wearing away
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Resources in Review
What are resources?Resources are things people use.
Can you name some resources: wind, water, soil, trees, animals, oil, fossil
fuels, solar energy, minerals, rocks, food, electricity, plastic, and many other items.
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The most abundant natural resource on Earth
97% is
NaClH20
Can you restate this claim?
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Renewable, Nonrenewable, or Inexhaustible
Classify the following:
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Fossil Fuels
Non-renewable resources –
it takes millions of years to make
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Types of Fossil Fuels
Coal Oil Petroleum Natural Gas
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EOPLE, PLANTS
NIMALS
ITROGEN
RINKING WATER
IR (ATMOSPHERE) OXYGEN – CARBON-DIOXIDE
OIL
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Soil Types
Silt-fine, rich ingredients, moved from some other place
Sand-grainy, mixture Potting Soil – Large particles
Clay- tiny particles, retains moisture
Sedimentary Layers
Loam is a mixture of Clay,
Silt, & Sand
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Sedimentary Rock LayersWhich layer is the oldest?
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Earth’s Resources
S.H.E.L Fossil Fuels S.O.W. &
Minerals
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?
[Online Imagehttp://www.roseflowergarden.com/images/soil-a-Small.jpg Downloaded February 4, 2007.
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A Sediment Display
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Inexhaustible Resources:
U N
C E A N TIDES
I N D
eothermal heat
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EOPLE, PLANTS
NIMALS
ITROGEN
RINKING WATER
IR (ATMOSPHERE) OXYGEN – CARBON-DIOXIDE
OIL
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Fossil Fuels
Non-renewable resources – take millions of years to make.
Made from the remains of living organisms – such as plants and animals.
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Takes millions of years to make – cannot be replaced in our life time.
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Types of Fossil Fuels
Coal Oil Petroleum Natural Gas
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m ountains
eather
From Water, Wind, & IceV
U
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MAGNETS have 2 poles
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Electric currents