問題一覧
1
Is continuously cycled into the air and back to its sources
water erosion
2
Water that sinks into the ground is forms
groundwater
3
It accomplishes the greatest change on earth by erosion
running water
4
As gullies flow down a hillside, the water removes the topsoil. Bigger gullies form into
streams
5
Raindrops fall on the soil exert pressure with their weight
splash erosion
6
If the soil is loose and is not protected by a covering on the surface, then a large amount of it is lost through raindrop ersion whish is also called
splash erosion
7
Water that does not evaporate or immediately sink into the soil is called
runoff
8
The rock particles picked up by the wind are deposited elsewhere, forming hills of sand called
sand dunes
9
The process of wind carrying loose sediment is called
delfation
10
The large pebblles left behinf form a hard surface called
desert pavement
11
The wind blows rock particle away and these wear down exposed rocks surfaced. This procces is called
abrasion
12
Bits of rocks are separated and fall to a lower level because of gravity
erosion by gravity
13
When gravity moves rocks and soil down a slope, it is called
mass movement
14
When the amout of snow is so great that it cannot completely melt ____ forms
glaciers
15
The clearing of trees, transforming a forest into cleared lands
deforestation
16
Farmers use excessive fertilizer and iggrication damages the land
intensive farming
17
Mae the soil bare
housing development and road construction
18
This type of farming method uses topography of the land to slow down the flowmof water through a series of terraces
terracing method farming
19
This method is similar to terracing but on a smaller scale
contour farming
20
In this method, the plants arraged in strips with rows of the main crop alternated with rowsmof a covered crop
strip cropping