Earth's Layers
What are the five layers of the Earth?
Crust, Upper Mantle, Lower Mantle, Outer Core, Inner Core.
Boundaries
What was the name of the supercontinent that was formed over 200 million years ago?
Pangea
What is it called when two plate boundaries move AWAY from each other?
Divergent Plate Boundaries
Name the three types of rocks we have been studying
Igneous
Metamorphic
Sedimentary
Which layer of Earth is semi-solid and the thickest layer?
The mantle.
The Ring of Fire would have what type of major geographical feature?
Volcanoes
What evidence did scientists use to make a theory about how the continents were once a supercontinent?
Fossil Evidence
Glacier scrapes in the desert
South America and Africa fit together like a puzzle
Which of the following is not a plate boundary:
A) Divergent
B) Convergent
C) Transform
D) Horizontal
D) Horizontal
Metamorphic rocks formed from cooling magma.
False
Which layer of the mantle is made of partially liquid rock and can cause the plates to move?
Asthenosphere
Upper Mantle
List two types of geological features that could be found at divergent boundaries?
Valleys
Volcanoes
Mid Ocean Ridges
Earthquakes
Which scientist came up with the hypothesis of continental drift?
Alfred Wegener
True or False:
Valleys form at divergent boundaries.
True
What type of fossils are used to study animal behavior?
Trace Fossils
It increases.
How would mountains form?
Two continental crusts colliding at a convergent boundary.
True or False:
The tectonic plates are still moving a small amount each year.
True
What type of landforms can be made from convergent boundaries?
Mountains and Volcanoes
A insect is trapped and preserved in amber. What type of fossil is this?
True Form Fossils
Why is the inner core solid and not liquid?
The pressure from the force of gravity causes it to become solid iron.
What geologic feature is formed at a transform boundary?
Fault lines
Earthquakes
What causes the continents to move? Describe the process.
Convection currents cause the plates to move.
Hot temperatures from the core heat up the lower mantle, decreasing its density and causing the material to rise. As the material gets closer to the crust, it cools becoming more dense and sinking. This process repeats itself, acting as a conveyor belt and moving the plates above.
What is an example of a major transform boundary in California?
The San Andreas Fault
Which type of rock reacts with acid rain?
Limestone