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15
×
Why are the hills protruding like that over the valley?
The hills are made of harder rocks than the softer rocks in the valley.
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15
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How are sand dunes formed?
Sand dunes form when wind-blow sand starts to pile up.
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10
×
What type of weathering is shown in the picture? a) Mechanical; b) Biological; c) Chemical; d) Magical
a) Mechanical (water soaks into small fissures and cracks, expands when it freezes in the winter, and physically breaks the rock apart)
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15
×
Was this valley eroded by a river ir by a glacier?
A U-shaped valley is an example of a glacial landform, carved by slowly moving glaciers.
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seesaw
Swap points!
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star
Double points!
Okay!
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shark
Other team loses 15 points!
Okay!
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baam
Lose 25 points!
Oops!
15
×
What is the typical shape of a river valley?
They are typically V-shaped valleys.
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10
×
What type of plate boundaries are responsible for these folded rocks in the Pyrinees?
Convergent boundaries
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15
×
What is happening in this rock?
Even the tiniest bacteria, algae and lichens produce chemicals that help break down the rock on which they live. This is Biological Weathering.
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thief
Give points!
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25
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shark
Other team loses 25 points!
Okay!
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rocket
Go to first place!
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lifesaver
Give 20 points!
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10
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Water has the power to split rocks because when it freezes, it: a) contracts; b) evaporates; c) expands
c) expands
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10
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Chemical weathering is most likely to take place in environments that are: a) cold; b) wet; c) dry.
b) wet (These chemical processes need water, and occur more rapidly at higher temperature, so warm, damp climates are best.))
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10
×
What type of plate boundary is responsible for the formation of the Great Rift Valley?
Divergent (a horizontal extensional force stretches the lithosphere, and it becomes thinner. Eventually, it will rupture).
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10
×
What type of weathering is shown in the picture? a) Mechanical; b) Biological; c) Chemical; d) Magical
b) Biological (plant roots can enter a small crack in a rock. As the root grows larger the crack gets larger. This weakens the structure of the rock).
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banana
Go to last place!
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fairy
Take points!
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25
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rocket
Go to first place!
Okay!
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baam
Lose 25 points!
Oops!
10
×
True or false? Gravity causes water to flow from higher to lower ground.
True
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10
×
What type of plate boundaries are responsible for the Lesser Antilles?
Convergent boundaries
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