Volcanoes
A volcano that has erupted in the past but is not expected to erupt in the furture.
Dormant
Beginning point of an earthquake.
Focus / Hypocenter
This type of weathering transforms rocks into new substances.
Chemical Weathering
Primary force behind erosion.
Gravity
Largest soil particle.
Sand
Large, symmetrical, cone-shaped volcano that is commonly pictured.
Composite Cone
This measures the magnitude of an earthquake.
Richter Scale
These "grow up" from the floor of caves.
Stalagmites
Type of mass wasting where gravity slowly pulls soil down the slope of a hill.
Soil Creep
Most plants germinate in this layer of soil.
Topsoil
Most dangerous volcanic eruption.
Plinian Eruption
The belief that the earh was one giant landmass is known as a ___.
Which form of weathering is a faster process?
Mechanical Weathering
When wind, water, or ice drops sediment and rocks into a new location.
Deposition
Scientific name for people who explore caves.
Spleunkers
Volcanoes produce this kind of rock as magma hardens and cools.
Igneous Rocks
Fastest moving surface waves.
Love Waves
A form of mechanical weathering where sheets of rock peel away like an onion.
Exfoliation
An area of sediment at the mouth of a river is called a(n) ____.
Delta
When equal parts of sand and silt are mixed with with about half as much clay, the soil is called ___.
Loam
An avalanche of red-hot dust and gases that runs down the side of a volcano.
Pyroclastic Flow
Scientists who study earthquakes.
Seismologists
When carbon dioxide dissolves in water, it creates ____, which is known as a weak acid.
Carbonic Acid
These stroms tend to be closer to the ground due to the weight of the particles.
Sandstorm
Igneous, sedimentary, and ___ are the three main types of rocks.
Metamorphic