vocabulary 1
What is the solid layer between the crust and the core?
mantle
What is a scientific theory?
a well-tested explanation
what is a rift valley?
a large valley where two plates pull apart
Where is Alfred Waegener from? What was his theory?
Germany-continental drift
What are the 3 plate boundary types?
convergent, transform, divergent
What is pressure?
force put on an object
What are plates?
pieces of Earth's crust
What is the innermost layer of the Earth called? Is it solid or liquid?
solid
1 pieces of evidence from fossils
Found in places now separated by oceans
What movement happens at a convergent boundary?
plates move towards each other
What is granite?
a light colored rock found in Earth's crust
What is a fossil?
a piece of plant or animal saved in a rock
What happens when a continental plate converges with an oceanic plate?
the oceanic plate sinks under the contienental
1 pieces of evidence from lands features
Mountain ranges in different continents line up
Coal mines found in different continents
What movement happens at a divergent boundary?
plates pull apart
What is Basalt?
What is Pangea?
the supercontinent when all land was conducted
What happens when a continental plate converges with another continental plate?
mountains
1 pieces of evidence from climate
South Africa used to have glaciers
What do plates do at a transform boundary? What event usually happens here?
slide past eachother
earthqaukes
What are seismic waves?
waves in Earth's crust created by earthquakes
What is a hypothesis?
an idea/guess about something
What are the two types of crust? Which is more dense?
Oceanic and continental crust-oceanic is more dense
What are the three types of evidence Alfred needed to support his theory of continental drift?
land, climate, and fossils
What moves tectonic plates?
convection currents in the mantle