What does the THIN blue/green layer represent?
crust
____________ is melted rock inside the earth.
the thinnest of the Earth's layers
crust
What type of formations occur at plate boundaries that push together?
mountain ranges
What soil layer does number 4 represent?
bedrock
What does the BROWN layer represent?
mantle
The study of how the earth's lithospheric plates interact is called ______________ _______________.
plate tectonics
the hottest of the Earth's layers
inner core
At which type of plate boundaries are earthquakes most likely to occur?
plates that slip past one another; plates that grind into one another
Plate movement can cause deep cracks or, __________ in the earth's crust.
faults
What does the YELLOW layer represent?
core
Soil that has been deposited in horizontal layers is called ______________.
strata
the lowest layer of the crust, made of solid rock
bedrock
At what two layers of the earth do convection currents occur?
mantle and outer core
The thickest of Earth's layers.
mantle
What soil layer does 2 represent?
topsoil
____________ is the process by which rocks are gradually broken down.
Weathering
contains most of the minerals and humus
top soil
Explain how and why convection currents occur.
heated magma rises towards the crust, cools, then sinks back down
The layer that produces the Earth's magnetic field.
outer core
What soil layer does number 3 represent?
subsoil
________________ _______________ occurs when hot magma rises upward toward the crust and cooler magma sinks towards the core.
Convection currents
light brown in color, less rich in minerals
subsoil
How has deforestation had an impact on the world?
Deforestation has affected the amount of oxygen in the atmosphere, precipitation, and temperature of the air.
Physical weathering creates smaller rocks from larger rocks because of temperature and pressure changes such as roots growing through bedrock. Chemical weathering from oxidation and carbonation causes the breakdown of rocks and formation of new substances.