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WorksheetsConserving Land and Soil
Total questions: 10
Worksheet time: 5mins
Name
Class
Date
1.
_________________ of Earth's surface is dry, ice-free land.
a)
Over half
b)
About half
c)
Less than a third
d)
Less than a quarter
2.
Because it can take ___________ to form just a few centimeters of new soil, it is important to protect our land from erosion.
a)
one year
b)
hundreds of years
c)
thousands of years
d)
several months
3.
If a farmer plants a field with the same crops each year, the soil becomes less fertile, a situation called ___________________.
a)
nutrient depletion
b)
desertification
c)
crop rotation
d)
erosion
4.
New farmland can be created by ____________.
a)
clearing forests
b)
draining wetlands
c)
irrigating deserts
d)
all three of these reasons
5.
The structure of fertile soil contains layers including litter, topsoil, __________, and bedrock.
a)
clay
b)
sand
c)
crust
d)
subsoil
6.
Strip mining exposes soil and causes _____________.
a)
mineral deposits
b)
erosion
c)
nutrient depletion
d)
drought
7.
When soil becomes depleted, farmers usually apply fertilizers, which include _____________ that help crops grow better.
a)
nutrients
b)
litter
c)
topsoil
d)
water
8.
One cause of desertification is ____________, a period when less rain falls in an area.
a)
el nino
b)
drought
c)
water rationing
d)
eating too many sweets
9.
__________________ is the layer of soil where most water and nutrients are absorbed by plant roots.
a)
Bedrock
b)
Litter
c)
Topsoil
d)
Subsoil
10.
The process of restoring an area of land to a more productive state is called __________________.
a)
development
b)
farming
c)
mining
d)
land reclamation
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