Continents on the Move
What was Pangea?
Pangea was a supercontinent that existed about 180 million years ago.
What are plate boundaries?
Places where plates interact.
What page of the ESRT can I find a map of tectonic plate boundaries?
Page 5
Who discovered the idea of Pangea?
Alfred L. Wegener
Where do earthquakes and volcanoes occur the most?
Along the plate boundaries.
What is the Theory of Continental Drift?
The theory of continental drift states that the continents were once one landmass that had broken apart an moved to their present positions.
The equator is located at 0° ________ (latitude or longitude)
Latitude (the horizontal axis)
What was the shape of the Earth's crust 180 million years ago?
It was all one big landmass called Pangea.
What is the Theory of plate tectonics?
The theory of plate tectonics states that the Earth's crust and upper mantle are broken into enormous slabs.
The prime meridian is located at 0° ________ (latitude or longitude)
Longitude (vertical axis)
Name 3 pieces of evidence scientists use to justify the existence of Pangea.
1.Continents fit together like puzzle pieces. 2. Similar ancient fossils found on continents set far apart (scattered). 3. Similar rock types located on different continents set far apart.
Which type of plate boundary activity causes volcanoes to form?
Which causes Earthquakes to form?
What about mountains?
What is divergence/splitting (divergent plate boundary)
What is a transform plate boundary (plates sliding pass one another)
What ia convergence/ collision (convergent plate boundaries)?
What are the crust and mantle?
What are the crust and mantle?Crust= The Earth's outermost solid layer. Mantle= The layer of Earth between the crust and the core.
Find and list the name and coordinates of a mid-ocean ridge?
To be confirmed by teacher.
Why is the divergent plate boundary called the constructive boundary?
AND
Describe exactly how volcanoes are formed.
This boundary creates new land expanding the crust beneath our feet.
A Hotspot forms in the mantle underneath the crust and is forced upward by convection currents; the crustal plates split as the magma pushes from beneath, cooling over at the surface creating what we know to be a volcanoes 🌋
What are convection currents/ how does it work in the mantle?
Convection currents transfer heat from one place to another by mass motion of a fluid such as water, air or molten rock (magma).
According to the map, what specifically is happening at 40°N, 120°W? (State the type of plate boundary and continent or ocean names when describing what is happening)
This is a transform plate boundary. The North American and Pacific plates are sliding past each other creating earthquakes.