earthquake
What is an earthquake
vibrations of earth caused by sudden realeses of energy
what is a magma chamber ?
it contains all the molten rock
What causes erosion the most?
Water and wind erosion are the two primary causes of land degradation .
How are Earth's layers formed?
Layers of rocks are formed when sediment is laid down, and flattens out to be as close to the center of the Earth as possible.
Why do lakes turn green?
waterbodies turn green due to the growth of small microscopic plants in the water called algae
what is the focus
point where the earthquake starts
What is a caldera?
a collapsed volcano
What is the process of eroding?
Erosion is the geological process in which earthen materials are worn away and transported by natural forces such as wind or water.
What layer of earth is pure liquid?
Above the inner core is the outer core, a shell of liquid iron.
Do all lakes have rivers?
Most lakes have at least one natural outflow in the form of a river or stream
what is the Epicenter ?
The location directly above the focus
what is a volcano ?
a mountain or hill, typically conical, having a crater or vent through which lava, rock fragments, hot vapor, and gas are being or have been erupted from the earth's crust.
How can erosion be prevented?
Rotating in high-residue crops — such as corn, hay, and small grain — can reduce erosion as the layer of residue protects topsoil from being carried away
How many layers make up the Earth?
three
What is the deepest lake in the world?
Lake Baikal
what is the fault ?
Where the movement occurs
How long can a volcano keep erupting
Once a volcano has begun to erupt, it usually takes about ten years before that particular eruption comes to an end.
What is erosion example?
Erosion happens when rocks and sediments are picked up and moved to another place by ice, water, wind or gravity.
Which earth layer is the thickest?
core
Which is the main source of fresh water?
precipitation
what does aftershock mean ?
Small quake that come after a larger quake
What cause a volcano to erupt ?
the buoyancy of the magma, the pressure from the exsolved gases in the magma and the injection of a new batch of magma into an already filled magma chamber
what are the 3 steps of eroding ?
detachment (from the ground), transportation (via water or wind), and deposition.
What are Earth's 4 layers?
the crust, the mantle, the outer core, and the inner core.
What is the coldest lake in the world?
Lake Vida