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"Science Ch.9"
Changes to earths surface lessons 1 and 2
Question | Answer |
---|---|
How are canyons most likely formed? | Rivers |
If you are hikeing up a sloping landform, how can you tell if it's a moraine? | Rocks, Boulders, Clay, Sand |
Where would you mast likely find a delta? | At the mouth of a river. |
Which of the following is NOT a cause of weathering? A. River carries sand and sediment down stream B. sand blows against rocky surface. C. Plant grows in a crack of a rock | A. River carries sediment down a stream |
Wind- | weathers landforns and carries away tiny pieces if rock |
Deposition- | sediment drops out of water and forms a delta |
sinkhole- | roof of a cave colapses and if the cave is near surface a hole forms |
shaking of the ground caused by moving plates | earthquake |
A break in the earth's crust | fault |
a mountian made of lava, ash or rock | volcano |
forms where plated push against each other | magma |
which of earth's layers contains soft areas on whhich plates float? | mantle |
_________ __________ causes both earthquakes and volcanic eruptions. | Moving plates |
What would make better model to show the process that causes an earthquake? Two sponges rubbing against each other or a bowel of jiggling jello. Explain why! | The sponges, because it models the plates rubbing against each other. |
What would make a better model to show a volcainc erution? A can of soda or a lit firecracker. Explain why! | A can of soda, because presure pushes both the soda and the magma out of the volcano. |
natural land shape or feature | Landform |
all the landforms in an area | topography |
a large thick sheet of ice | glacier |
a large hill of sand made and shaped by wind | sand dune |
an area of new land at the mouth of a river | delta |
a huge hole formed when the roof of a cave colapses | sink hole |