wind and water erosion
miscellaneous
Fossils
earthquakes
volcano
100
When big pieces of sediment scrape and wear away rocks it is called _________________.
abrasion
100
When sand and silt are moved from one spot and deposited in another, it is called ____________________.
deposition
100
What are the remains, imprints and footprints of prehistoric organisms called?
fossils
100
When rocks break, they move along surfaces called_________________.
faults
100
This is in a chamber under the volcano.
magma
200
Farmers plant grasses so that the ______________ help stop erosion.
roots
200
Water that does not soak into the ground but flows over the Earth is called _______________.
runoff
200
These fossils existed for a short time, were found in a lot of places and help scientists to determine the age of things around them.
index
200
An _____________________ is the vibrations produced when rock breaks.
Earthquake
200
This is what flows out of a volcano.
lava
300
___________________ is when the wind erodes the Earth's surface by removing small particles like silt and sand.
deflation
300
Earthquakes are measured by the energy they release and the measurement is called ___________________.
magnitude
300
Dinosaurs left _______________ fossils when they walked around.
trace
300
The San Andreas fault is an example of a ______________ _____________. (the rocks slide past each other)
slip-strike fault
300
An opening that lava flows out of is a_____________.
vent
400
Sand _______________ build up on the beach when the wind blows.
dunes
400
______________________ ____________ and ____________________ _____________ are two types of seismic waves.
primary waves , secondary waves
400
When the whole animal is preserved it is called an _______________ _______________ fossil.
original remain
400
The waves generated by an earthquake are called __________________ __________________.
seismic waves
400
The round depression in the top of a volcano is a ______________.
crater
500
____________________is one of the forces that effects runoff because it causes water to run downhill.
gravity
500
Sometimes when earthquakes happen under the ocean they cause a __________________.
tsunami
500
When an animal's skeleton dissolves and leaves a skeleton shaped cavity in the rock, it is called a _______________ fossil.
mold
500
Seismic waves are measured by a ________________.
seismograph
500
A volcano is shaped like a _______________.
cone
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