Layers
Rock or Mineral?
Soil!
Plate Tectonics
Volcano!
100
This is the thinnest layer of the Earth.
What is the crust.
100
This is a solid substance made up of at least one mineral.
What is rock?
100
Soil is made up of crushed bits of rock, decayed organic matter, and these two things.
What are air and water?
100
This is the tectonic plate we live on.
What is the North American plate.
100
This is something caused by molten rock erupting through an opening in the Earth's crust.
What is a volcano?
200
This is the layer of the Earth that is actually made of two parts, a solid inner part and a liquid outer part.
What is the core?
200
This is considered a mineral when cold, but not when warm.
What is ice?
200
This is a critical part of soil, not to be confused with a popular Mediterranean spread!
What is humus?
200
When two plates collide and release energy, they may cause this.
What is an earthquake?
200
When hot ash and gas spew into the air and fall to the earth, they form one of these.
What is a cinder cone volcano?
300
This layer of the Earth is actually made up of plates, not one solid section.
What is the crust?
300
Plastic is not a mineral because it lacks this attribute of minerals.
What is naturally occurring?
300
This is the horizon of soil found closest to parent rock.
What is horizon C?
300
When a piece of oceanic crust slips underneath a piece of continental crust, it forms one of these.
What is a subduction zone?
300
This is another name for hot ash and gas erupted from a volcano.
What is tephra?
400
This layer of the earth is made up of molten iron and nickel.
What is the core?
400
This type of rock is caused by immense heat and pressure that squish together minerals to form something new.
What is metamorphic?
400
This is the common word for soil that has lost much of its nutrients.
What is dirt?
400
This man theorized that there once was a supercontinent millions of years ago, based on unique fossil and geological evidence.
Who is Alfred Wegener?
400
This US state is made of volcanoes.
What is Hawaii?
500
The mantle is a layer of the Earth that moves by this process.
What is convection?
500
This form of rock is exemplified by basalt, often found near vents in the Earth's surface.
What is extrusive igneous?
500
Bacteria and worms play a key role in helping soil stay healthy by helping with this process.
What is decomposition?
500
Two plates that move away from each other are pushed along by this process.
What is seafloor spreading?
500
Mt. St. Helens in Washington state famously erupted in 1980, spewing massive clouds of ash and other materials into the air. It is a famous example of this type of volcano.
What is a strato (or composite) volcano?