Surface of the Earth Flashcards
What is the surface layer of the Earth called?
The Crust
What is the layer of soil on the surface of the Earth?
Topsoil
What is the second layer of soil?
Subsoil
What is the third layer of soil?
Bedrock.
What is beneath bedrock?
Semi Solid rock.
Name the three types of soil.
loamy, clay and sandy
Which soil holds the most air and the least water?
Sandy
Which soil holds the least air and the most water
Clay
Which soil has equal amounts of sand and silt?
Loamy
Which soil is made up of mainly fine grains of broken rock?
Sandy
Which soil is tightly packed and cannot hold oxygen?
Clay
Which soil has large and small spaces for air and water, and is not easily blown or washed away?
Loamy
What is fertile soil?
Soil that is full of humus and rich in minerals.
Name the four layers of the earth.
Crust, semi solid rock, outer core (liquid rock) and inner core (solid rock)
What is natural soil erosion?
When topsoil is blown away or washed away.
