Weathering, Erosion and Deposition
Which process breaks rocks into smaller pieces?
Weathering
Which is a destructive force?
A. Delta formation
B. Sand dune formation
C. Earthquake
D. Barrier island formation
C. Earthquake
Which structure helps protect beaches from erosion?
A. Levee
B. Seawall
C. Dam
D. Retaining Wall
B. Seawall
A sidewalk has cracks because the roots of a large tree have grown underneath it. What process caused the sidewalk and surrounding rock to break apart?
Weathering
A mountain community experiences frequent landslides. Engineers are deciding between building a retaining wall or a jetty. Which would be more appropriate, and why?
A retaining wall because it can help hold soil and rock in place on a hillside.
Which process moves sediment form one place to another?
Erosion
Which is a constructive force?
A. Flood
B. Landslide
C. Deposition
D. Earthquake
C. Deposition
Which technology helps reduce flooding along rivers?
A. Seawall
B. Levee
C. Volcano
D. Fault
B. Levee
An underwater volcano erupts and continues adding lava to the ocean floor. Over a long period of time, what could this activity eventually create?
New land/an island
A student finds a rock that has become rounded and smaller after being carried along the bottom of a river. Which process first helped break the rock apart, and which process moved it?
Weathering broke it apart; erosion moved it.
What is deposition?
Dropping sediment in a new location.
Lava can be considered a constructive force because it ___
A. causes erosion
B. creates new land when it cools
C. destorys rivers
D. forms hurricanes
B. Creates new land when it cools
Why are retaining walls built?
To prevent landslides
A landslide sends rocks, soil, and sediment down the side of a mountain. What type of force is causing the land to change?
Destructive force
A river has been flowing through the same area for thousands of years. It carries sediment away from the mountains and eventually deposits it where the river meets the ocean. Which TWO processes are happening?
Erosion and deposition
How is a delta created?
Fast moving rivers carry sediment to where a river meets a non-moving body of water. The sediment drops and forms a delta.
Which natural event is caused by movement along a fault?
Earthquake
Planting vegetation helps ________
Hold soil in place
A city wants to slow down water flowing into streets during heavy rain. Engineers design underground channels that collect and move rainwater away. What technology are they using
Storm drain system
A coastal city is worried about a tsunami. Engineers design a large barrier that can help protect the community from incoming water. What problem is the technology designed to reduce?
Tsunami flooding and wave damage
What is Ice Wedging?
When water gets into the cracks of a rock, freezes, expands then shatters.
Which statement is true?
A. Constructive forces only destroy land
B. Destructive forces only build new land
C. Constructive forces create new landfroms
D. Weathering moves sediment
C. Constructive forces create new land.
Which technology gives people advance warning about severe weather?
Weather Radar
A coastal town builds a seawall to protect its buildings from waves. During a major storm, the wall prevents much of the water from reaching the town. What is the main purpose of this technology?
To reduce the effects of a destructive force.
A community is built near a river that frequently floods. The river also carries sediment that is deposited near the community. The city wants to protect homes and reduce the effects of flooding. What technology could engineers use, and what Earth processes are causing the problem?
A levee could help protect the community. Erosion moves sediment through the river, and deposition leaves sediment behind. Flooding is a destructive force that can change the land.