Weathering
What is weathering?
The slow process of breaking down rock.
what force moves sand to create sand dunes?
wind
What is an active volcano?
One that is currently "alive" or erupting.
Where do most eathquakes occur?
at plate boundaries
What civilization lived in the Yucatan peninsula area of Mexico from 200-900CE?
The Maya
Name one type of weathering
Chemical or Physical
What is the definition of erosion?
The movement of weathered rock from one place to another.
Where are most volcanoes located?
At plate boundaries.
What disaster is caused when an earthquake happens underwater?
A Tsunami
Which landform is water falling from a high point to a lower one?
waterfall
Name two of the four causes of erosion.
gravity, wind, water, glaciers
How do plants help prevent erosion?
Their roots help hold the ground in place.
What is the difference between dormant and extinct volcanoes?
dormant are sleeping now but could erupt again in the future. Extinct will never erupt again.
What is another name for a crack in the Earth?
Hint: California sits on one
a fault
Which landform is characterized by water that is completely surrounded by land?
a lake
How is physical weathering different from chemical weathering?
Physical changes the size or shape of the rock. Chemical changes the composition of the rock.
Name a piece of evidence that supports the theory of continental drift.
dinosaur and plant fossils found only in Africa and South America. Same type of rock in both places.
What is the name of the large group of volcanoes in the Pacific.
The ring of fire
Explain one way that tectonic plates can move.
They can pull apart, push against each other or slide side to side.
What is the name of the theory that describes the movement/formation of our continents?
Continental Drift