How is a canyon formed?

floods erode the sandstone away

Which is an example of an alternative source?

using biofuels to create energy

How does a delta form?

river depositing large amounts of sediments

pieces of rock or soil carried from one place to another

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Earth Science

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Questions 14

Answers

1
In order for fossil fuels to form, what needs to be present?
decaying organisms
metal minerals
sand and a few small pieces of wood
2
What causes large cracks to form in rocks?
erosion from fast moving water
water freezing and thawing
sediments being deposited
erosion from wind
3
Which are both examples of alternative energy resources?
hydroelectric and geothermal
wind and coal
geothermal and natural gas
solar and petroleum
4
How is a canyon formed?
glaciers erode the canyon rock as they melt
wind blew large rocks that smashed the walls
ice wedged into cracks and weathered the walls
floods erode the sandstone away
5
Which is an example of an alternative source?
burning coal to heat homes
building new water treatment plants to improve water supply
replacing lawns with plants that require less water
using biofuels to create energy
6
All of these are related to forming oil and natural gas except?
sedimentary rocks
active volcanoes
decomposed animals
decayed plants
7
Which item is in the same category as coal?
wood
wind
petroleum
corn oil
8
How is a U-shaped valley formed?
a glacier
melting snow
a hurricane
flash flooding
9
How is sedimentary rock formed?
formed from limestone
common in texas from the heat
made of layers
cemented rock
10
How does a delta form?
a river breaking the bedrock
hurricanes pushing soil onto the land
river depositing large amounts of sediments
tsunamis washing sand onshore
11
What is helpful to make hydroelectric energy useful?
cool, rainy climate
very little wind
river flows rapidly
no geysers or hot springs
12
Which of these is a renewable resource?
none of these
wind
gasoline
natural gas
13
What turns sand into sandstone?
melting and cooling
compaction and cementation
erosion and compaction
evaporation and dissolving
14
What is erosion?
rocks broken into smaller pieces that remain in same spot
pieces of rock or soil carried from one place to another
sediments fall to the bottom of a lake and form layers
pressure compacts layers and turns into rock

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