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Earth Science Unit 3
Earth Science Unit 3
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Earth Science (Beaches, Floods, Earthquakes, Soil)
Flashcards
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Questions
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Answers
1
What can change beaches from day to day?
Sea animals searching for food
People having picnics on the beach
Lifeguards saving a swimmer from harm
Wind blowing sand and waves eroding and depositing sand
2
I did a great job!
True
False
3
What is an artificial lake that is used to hold water for future use and to control floods?
reservoir
floodway
beach nourishment
sea wall
4
Contour plowing, cover crops, wind breaks, and terrace farming are all ways farmers ______
protect topsoil
plant their potatoes
make designs in the soil
create more crops
5
Molten rock pushing up through the surface of the Earth forms a
barrier island
volcano
valley
dune
6
How is a canyon formed?
fast moving water eroding the soil
volcanoes
hurricanes
earthquakes
7
What are the two types of weathering called
volcanic and chemical
mechanical and physical
mechanical and electrical
physical and aerobic
8
How does soil erosion change Earth's surface?
It forms mountains
It causes earthquakes
Takes healthy topsoil away that is needed for growing crops
It makes the land more fertile
9
What image is shown in this picture?
floodway
dam
jetty
sea wall
10
A violent shaking of the Earth's crust as built up energy is released is called a(n)
volcano
Earthquake
tornado
tsunami
11
What do you call the layer of soil just below the top soil? It is not as rich as top soil.
subsoil
bedrock
dirt
topsoil
12
What is the surface layer of soil that is rich in humus and nutrients?
sand
clay
subsoil
topsoil
13
Rivers carrying sediment to the ocean and waves depositing sediment on the land over time form
rivers
mountains
beaches
valleys
14
What is a wall along the banks of a river or lake, designed to prevent flooding?
jetty
dam
barrier island
levee
15
What is an event in which water flows over land that is usually dry?
flood
deposition
dredging
erosion
16
This instrument measures the strength of earthquakes. Wavy lines show movement of the mantle.
microwave
seismologist
seismograph
soil
17
What are 3 ways to stop or slow beach erosion? **CHOOSE 3 ANSWERS
building a dam
building a sea wall
leave the beach free from development
beach nourishment
18
What are some effects of beach erosion?
Sponge Bob and Patrick would go to Bikini Bottom instead
The beach builds up too big
Sand is taken away making the beach smaller and less useful
Sea animals won't lay eggs there
19
A force that wears down of the earth's surface is called a
destructive force
constructive force
20
How was the Grand Canyon formed?
An earthquake broke a mountain in half.
Wind wearing away the sand and rock
A volcano formed the two sides of the canyon
Erosion by the Colorado River wearing away the canyon floor.
21
Sediments moved from one place and dropped or released in another place is called_____.
deposition
magma
weathering
erosion
22
The practice of planting crops in leveled sections along a hillside is called _______.
terrace farming
contour plowing
crop rotation
stair step plowing
23
What is the boat in this picture doing to the river?
flooding
plowing
digging
dredging
24
Hills of sand in deserts or along seashores as a result of sand being deposited are called
sand dunes
mountains
deltas
levees
25
What land features can help to control flooding by soaking up excess water?
mountains, hills and valleys
swamps, estuaries and other wetlands
beaches, rivers and valleys
streets, parks and neighborhoods
26
Weathering is
the breaking down of rocks into smaller pieces.
a tornado blowing down a house.
the building up of the Earth's surface.
fire burning a prairie.
27
The carrying away of sediments by moving water, wind, or ice is called________.
deposition
magma
fault
erosion
28
What is the practice of plowing soil in curved rows that follow the shape of the land?
rotating crops
ox plowing
contour plowing
reservoir
29
This wall is built along the rear edge of a beach and it is designed to prevent erosion.
sea wall
dam
floodway
levee
30
What is an island near the shore, formed by currents that deposit sediments?
sea wall
barrier island
jetty
levee
31
What are 2 ways that floods can be controlled?
dams and levees
jetties and dredging
meanders and sea walls
deltas and sea walls
32
Deposition, volcanic eruptions, plates colliding, glacial deposits, earthquakes, landslides are
examples of weathering
examples of constructive forces
examples of erosion
examples of destructive forces
33
A crack in Earth's crust along which movement takes place is called a
dam
break
delta
fault
34
What is a system of pipes or channels that carry away water from storms?
dam
storm drain
waterworks
levee
35
What is melted rock below the Earth's surface called?
sediment
magma
lava
volcano
36
Heavy rainfall, repeated rainfall, overflowing of rivers and lakes can all cause_________.
floods
hightide
ice
dams
37
What landforms are formed by deposition?
barrier islands, beaches, sand dunes, deltas, alluvial fans
levees, dams, sea walls
plains, mountains. canyons
trees, bushes, crops
38
I am going to make an A on my test!!
True
False
39
When rivers carry sediments to the ocean and waves deposit that sand onto land, a ___ can form.
coral reef
river
reservoir
beach
40
A natural resource that is made up of minerals, small rocks, water, gases, and organic matter.
soil
resevior
seismograph
storm drain
41
Weathering, erosion, sinkhole, landslide, earthquake are
Examples of beach nourishment
Examples of constructive forces
Examples of deposition
Examples of destructive forces
42
Dams on a river can block the flow of sediment to nearby beaches causing them to erode.
False
True
43
What forces can be both destructive and constructive?
volcanoes and earthquakes
floods and weathering
deltas and levees
magma and lava
44
How is a V-shaped valley formed?
mountains and volcanoes
dredging and deltas
earthquakes and volcanoes
weathering and erosion
45
Can rainfall in North Carolina cause floods in Georgia, even if it's not raining in Georgia?
yes
no
46
Which layer of the Earth's crust does most erosion occur?
subsoil
soil
bedrock
topsoil
47
What is the main difference in mechanical and chemical weathering?
Mechanical weathering builds up the rock
Chemical does not make new material but mechanical does
Chemical weathering changes the rock into lava
Mechanical does not make new material but chemical does
48
What is a wall across the river or other waterway, designed to hold back water?
dam
jetty
levee
sea wall
49
A force that builds up the Earth's surface is called a
constructive force
destructive force
50
What is the practice of dumping sand onto an eroded beach?
dredging
flood
jetty
beach nourishment
