The coldest parts of the earth
The Poles
examples of natural resources
water, the right kind of air, good soil
A natural formation of rocks or soil on the earth's surface is called a:
landform
A place in the earth where magma can errupt
Volcano
humus:
material in the soil that is made from living things that broken down or decayed
Label the earth's structure
the top layer of the earth's crust:
bedrock
Core:
the very center of the earth
Delta:
a new landform made by soil deposited at the end of a river
Imaginary line around the earth (halfway between the North & South Poles)
equator
Natural Resources:
Something found in nature, used by people.
3 ways to be a good steward of earth
reusing, recycling, and conserving
The outer layer of earth:
crust
Hot liquid rock (found in the earth's mantle)
magma
Mineral:
a substance that has never been alive
Water runoff:
precipitation on land that eventually trickles into streams
If a farmer plants different crops from year to year, he is __________
rotating
Earthquake:
shaking of the earth's crust
How much of the earth is covered by water?
70%
Erosion:
The loss of topsoil by water & wind
Soil that is _______________ will help plants grow
fertile
Matter that settles at the bottom a liquid is called:
sediment
Landslide:
a large mass of moving rock or soil from a mountain or cliff
A ________ is a ditch formed where soil was washed away
gully
Label the soil layers
The place where a river begins
source
# of continents on earth
7