Dams!!
What is a dam?
A: plowing along the contours of the and in order to minimize soil erosion
B: an embankment built to prevent the overflow of a river.
C: barrier that stops or restricts the flow of surface water or underground streams
D:a huge wall that protects animals from predators/
C: barrier that stops or restricts the flow of surface water or underground streams
What is a leeve?
A: A barrier that stops or restricts the flow of surface water or underground streams
B: an embankment built to prevent the overflow of a river
C: the practice of adding large quantities of sand or sediment to beaches to combat erosion and increase beach width.
D: Machinery that causes more frequent floodings.
an embankment built to prevent the overflow of a river
What is terrance farming?
A. A method of farming whereby “steps” known as terraces are built onto the slopes of hills and mountains
B. A method of farming that uses irrigation channels to move water across flat fields
C. A method of farming that rotates crops between different fields to maintain healthy soil
D. A method of farming that plants crops along natural riverbanks to use the soil deposited by floods
a method of farming whereby "Steps" know as terraces are built onto the slopes of hills and mountains.
What is contour plowing?
A. Plowing straight down a hillside
B. Plowing along the natural curves of the land
C. Plowing only near rivers
D. Plowing underwater
B. Plowing along the natural curves of the land
What is beach nourishment?
A. Removing sand from a beach
B. Adding sand to a beach to replace sand that has been lost
C. Building houses directly on the beach
D. Planting trees in the ocean
B. Adding sand to a beach to replace sand that has been lost
Dams restricts _____ from going anywhere and helps prevent _______
Dams restrict water from going anywhere and helps prevent flooding.
Hurricane Katrina destroyed everything because ___ _____ _____
Hurricane Katrina destroyed everything because the leeves broke.
Why do farmers use terraces on steep hillsides?
A. To prevent sunlight from reaching the crops
B. To make the mountain taller
C. To help slow down water and reduce soil erosion
D. To make crops grow without water
C. To help slow down water and reduce soil erosion
Why do farmers use contour plowing on hills?
A. To help slow water runoff and reduce soil erosion
B. To make crops grow faster
C. To make hills steeper
D. To keep all rainwater off the fields
A. To help slow water runoff and reduce soil erosion
Why is sand added to a beach during beach nourishment?
A. To make the beach wider and help replace eroded sand
B. To make ocean water less salty
C. To stop all waves from reaching the shore
D. To create new islands in the ocean
A. To make the beach wider and help replace eroded sand
Dams are powerful and can create electricity
A: true
B: false
true
There are 2 DIFFERENT types of Levees Normal, Casual Levees and _______ leeves
A: Floating levee
B: Rolling levee
C: Manmade levee
D: Hanging levee
Manmade levee
Which combination BEST describes terraced farming?
A. Wetlands, floating fields, and crops grown only in water B. Steep slopes, step-like fields, and crops grown on each level C. Deserts, sand dunes, and crops grown without irrigation
D. Flat land, underground fields, and crops grown without soil
B. Steep slopes, step-like fields, and crops grown on each level
A farmer is planting crops on a sloped field. Which method would BEST help reduce the amount of soil carried downhill by rainwater?
A. Plowing straight up and down the slope
B. Plowing along the natural curves of the hillside
C. Plowing only at the bottom of the hill
D. Plowing in circles around the field
B. Plowing along the natural curves of the hillside
Which BEST explains how beach nourishment can help protect a coastline?
A. Adding sand can make a beach wider, giving waves more beach area to wear away before reaching buildings.
B. Adding sand makes ocean waves stop before reaching the shore.
C. Adding sand permanently prevents coastal erosion from happening again.
D. Adding sand changes ocean water into fresh water.
A. Adding sand can make a beach wider, giving waves more beach area to wear away before reaching buildings.
Which combination best explains why a dam can be useful to people?
A: It can store water, help control floods, and produce electricity
B: It can make every river flow uphill and turn salt water into fresh water
C: It creates drinking water, stops all floods, and controls the weather.
D: It makes rivers flow backward, creates rainfall, and prevents droughts.
It can store water, help control floods, and produce electricity
Which BEST explains the main purpose of a levee?
A. To protect nearby land from flooding when a river rises
B. To help control where floodwater can spread during a storm
C. To provide protection for communities built near rivers
D. To reduce the chance that rising river water reaches homes and roads
A. To protect nearby land from flooding when a river rises
$400 — Terraced Farming
Why are terraces especially useful for farming on steep slopes?
A. They create level areas that slow water runoff and help keep soil from being washed downhill.
B. They allow farmers to grow crops without needing to water them.
C. They make steep slopes receive more sunlight throughout the day.
D. They stop rain from reaching the soil on the mountain.
A. They create level areas that slow water runoff and help keep soil from being washed downhill.
A farmer notices that heavy rain is washing soil downhill from a field. Which change would BEST help reduce this problem?
A. Plowing straight downhill
B. Plowing along the contours of the hillside
C. Removing plants from the field
D. Making the field steeper
B. Plowing along the contours of the hillside
A town wants to protect a beach that has been losing sand. Which is the BEST reason beach nourishment can help?
A. Adding sand can widen the beach and provide more space for waves to lose energy before reaching structures.
B. Adding sand permanently stops waves and currents from moving along the coast.
C. Adding sand prevents storms from forming over the ocean.
D. Adding sand causes the ocean to become less salty.
A. Adding sand can widen the beach and provide more space for waves to lose energy before reaching structures.
Which combination BEST explains why a dam can be useful to people while also affecting the environment?
A: It can store water and generate electricity, but it can also change habitats and the flow of a river.
B: It can prevent every flood and create new water, but it may cause animals to move closer to the river.
C: It can control the weather and provide electricity, but it can make all rivers dry up.
D: It can stop droughts completely and create reservoirs, but it has no effect on plants or animals.
A: It can store water and generate electricity, but it can also change habitats and the flow of a river.
Which of these are true about levees?
A. They can be made by people.
B. They can be built along rivers.
C. They can help protect land from flooding.
D. They can be made from materials such as soil, rock, or concrete. E. They can be built higher to provide more protection from rising water.
ALL ARE CORRECT :D
A farmer lives in a mountainous area where heavy rain often washes soil downhill. Which farming method would BEST help the farmer grow crops while reducing the amount of soil washed away?
A. Removing plants from the hillside
B. Building terraces into the hillside
C. Making the hillside steeper
D. Planting crops only at the bottom of the mountain
B. Building terraces into the hillside
Why can contour plowing reduce soil erosion more effectively than plowing straight up and down a steep slope?
A. The curved furrows can slow the movement of water downhill, giving more water a chance to soak into the soil.
B. The furrows completely stop all rain from reaching the soil.
C. The method makes the soil impossible for water to move.
D. The method causes rainwater to flow faster toward the bottom of the hill.
A. The curved furrows can slow the movement of water downhill, giving more water a chance to soak into the soil.
A coastal community adds thousands of truckloads of sand to a beach that has been eroded. After a major storm, much of the new sand is gone. What does this BEST show about beach nourishment?
A. It can restore a beach, but natural processes can move the added sand away over time.
B. It does not work because sand can never be used to restore an eroded beach.
C. It permanently stops erosion once enough sand has been added.
D. It causes storms to become stronger because there is more sand on the beach.
A. It can restore a beach, but natural processes can move the added sand away over time.