Changing landforms
Earthquakes
Volcanoes
Random
100
How are mountains made?
Mountains are formed when rock layers are squeezed from opposite sides they are also formed when some rock blocks move up and the others move down
100
What are the three kinds of "Faults"?
Normal fault, reverse fault and transform fault/strike slip fault
100
name the three kinds of volcanoes
cinder cone volcano, shield volcano and composite volcanoes
100
what rock must Seismographs be attached to?
Bedrock
200
what is erosion?
Definition: the gradual destruction of something. often caused by wind, water or other natural agents in the environment
200
what kind of seismic wave is the fastest
Primary waves
200
how can ash from a volcano affect the nearby areas
it isn't good to breath in and it also wrecks crops
200
What is the richter scale?
a scale to measure the strength of an earthquake
300
What is "Deposition"?
Deposition is the final stage of erosion. It is the dropping of sediment
300
what kind of seismic waves are the most destructive
Surface waves
300
how have scientist found evidence that the earth is about 4.6 billion years old?
they determine the "absolute age" by using properties of some of the atoms that make up the object
300
what do you call an opening in the earths crust
a Vent
400
What is one of the most powerful(and common) natural erosion agents
Water in motion
400
How are tsunamis caused?
From earthquakes under the ocean
400
Even though people are aware of the risks why do communities often live close to volcanoes
the soil around volcanoes is very fertile. Volcanic ash is high in nitrogen, which makes the soil ideal for growing plants, vegetables etc.
400
what is it called when magma flows parallel to the layers of rock and then hardens
What is a sill
500
Name one land shape formed by glaciers
Moraine, cirque or horn
500
what is liquefaction?
when an earthquake makes wet soil act like a liquid
500
what is "geothermal energy"?
energy harnessed from the earth's interior
500
what are three of the most common landforms
plains, plateaus and mountains
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