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7th Grade Science
Test Description: 7.8A, 7.8B, 7.8C
Instructions: Answer all questions to get your test result.
1) What is deposition?
A
The gradual wearing down of a geological formation due to its physical or chemical changes to the surface of rocks
B
The nonliving components of an ecosystem, such as soil and sunlight
C
When the rock or soil of Earth's surface is moved to another location by water, ice, or wind
D
When sediment created by weathering and moved by erosion settles in a different location due to gravity
2) What is weathering?
A
The gradual wearing down of a geological formation due to its physical or chemical changes to the surface of rocks
B
When sediment created by weathering and moved by erosion settles in a different location due to gravity
C
When the rock or soil of Earth's surface is moved to another location by water, ice, or wind
D
The nonliving components of an ecosystem, such as soil and sunlight
3) What is erosion?
A
The gradual wearing down of a geological formation due to its physical or chemical changes to the surface of rocks
B
The non-living components of an ecosystem, such as soil and sunlight
C
When sediment created by weathering and moved by erosion settles in a different location due to gravity
D
When the rock or soil of Earth's surface is moved to another location by water, ice, or wind
4) What does the term abiotic mean?
A
The non-living components of an ecosystem, such as soil and sunlight
B
When sediment created by weathering and moved by erosion settles in a different location due to gravity
C
The living components of an ecosystem, such as plants and animals
D
The gradual wearing down of a geological formation due to its physical or chemical changes to the surface of rocks
5) What does the term biotic mean?
A
When sediment creatd by weathering and moved by erosion settles in a different location due to gravity
B
The non-living components of an ecosystem, such as soil and sunlight
C
The living components of an ecosystem, such as plants and animals
D
When the rock of soil of Earth's surface is moved to another location by water, ice, or wing
6) The state of Texas has ten ecoregions characterized by what?
A
biotic and abiotic factors
B
topography
C
climate, soil type, and water availability
D
all of the above
7) Types of weathering include what?
A
chemical weathering
B
organic or biological weathering
C
all of the above
D
physical or mechanical weathering
8) What processes lead to GRADUAL changes of the Earth's surface?
A
weathering
B
all of the above
C
deposition
D
erosion
9) Which forces can lead to changes in the Earth's surface?
A
Volcanic Eruption
B
Tornado/Hurricane
C
All of the above
D
Earthquake
10) What is topography?
A
a description of land surface area with reference to variation in elevation
B
the mechanical or chemical process of breaking rock into smaller pieces
C
process by which water, ice, wind, and gravity remove and transport sediment from one place to another
D
earth material broken down by weathering; can be eroded and deposited by water, wind, ice, and gravity
11) What is sediment?
A
Process by which gravity, water, wind, and ice deposit weathered and relocated sediment
B
Earth material that is broken down by weathering; can be eroded and deposited by water, wind, ice, and gravity
C
Large area characterized by distinctive plants, animals, climate, and ecological fe
D
Description of land surface area with reference to variation in elevation
12) What is an ecoregion?
A
the mechanical and chemical processes that break down rock into smaller pieces
B
Description of land surface area with reference to variation in elevation
C
Large area characterized by distinctive plants, animals, climate, and ecological features
D
Earth material that is broken down by weathering; can be eroded and deposited by water, wind, ice, and gravity
13) Sand dunes are piles of sand found in desert areas. What causes sand dunes to form?
A
volcanoes
B
wind
C
water
D
earthquakes
14) Which is an effect of weathering on the Earth's surface?
A
breaking down rocks and forming soil
B
creating hurricanes
C
building mountains
D
causing lava flows
15) How are canyons formed?
A
earthquakes breaking rock layers
B
lava flowing from nearby volcanoes
C
rivers carrying sediment that erodes land
D
wind smoothing out rock formations
16) Sediments deposited at the mouth of a river can create what?
A
a volcano
B
a delta
C
a canyon
D
a lake
17) The rolling plain ecoregion has many deep canyons. This is probably because of
A
flowing rivers
B
high winds
C
moving glaciers
D
deep lakes
18) The Blackland Prairie ecoregion has many exposed boulders that are smooth and rounded. This is probably because of
A
deep and rapid rivers
B
wind blown sand and rain
C
hurricanes
D
severe droughts
19) Rivers carry and deposit sediment along their course. Were would the largest, heaviest sediment particles most likely be deposited?
A
in locations where the river banks are the widest
B
in locations where the river banks are the narrowest
C
near the start of the river where water travels fastest
D
at the river's mouth where the river meets the ocean
20) Which is most likely to increased the erosion that occurs on the banks of a river?
A
high winds over the ocean to which the river flows
B
ice formation at the source of the river
C
high temperatures incresing evaporation from the river
D
heavy rains on the mountain that is the river's source
*select an answer for all questions
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