True or False
Matter that settles at the bottom of a liquid is sediment
True
Erosion
Water, the right kind of air, and good soil are examples of natural ___________
The top layer of the earth's crust
Bedrock
What are the layers of the earth?
Crust, Mantle, Core
a place in the earth where magma can erupt as lava is a landslide
false, volcano
Rotate
There are ______ continents on the earth
Seven
Large mass of moving rock or soil from a mountain or cliff
Landslide
What are the layers of the soil?
Topsoil, Subsoil, Bedrock
the place where a river begins, usually high in the mountains, is its mouth
false, source
Fertile
The coldest parts of the earth are _____
Poles
Precipitation on land that eventually trickles into streams
Water runoff
What is an example of being a good steward of the earth?
Recycling, Repurposing, Reusing materials, conserving water, soil, and energy
Seventy percent of the earth is covered by water
True
A ditch formed where soil washed away
Gully
The imaginary line around the earth halfway between the North and South Poles is the _______
Equator
The very center of the earth
Core
What is a natural formation of rock or soil on the earth's surface called?
Landform
A new landform made by soil deposited at the end of a river is a source
False, delta
Magma
Humus
A substance in the earth that has never been alive
Mineral