tectonic hazards 1.1 Flashcards
structure of earth and where tectonic hazards occur (31 cards)
What are the three main layers of the Earth?
The crust, mantle, and core.
Which layer of the Earth is solid and primarily composed of silicate rocks?
The crust.
True or False: The mantle is the thickest layer of the Earth.
True.
What is the outer core primarily made of?
Liquid iron and nickel.
Fill in the blank: The _____ is the innermost layer of the Earth.
core.
What is the approximate thickness of the Earth’s crust?
5 to 70 kilometers.
What type of tectonic plate boundary occurs when plates move apart?
Divergent boundary.
Which tectonic plate is located beneath the Pacific Ocean?
Pacific Plate.
Name one tectonic plate that is part of the Earth’s lithosphere.
North American Plate.
True or False: Convergent boundaries are where plates slide past each other.
False.
What happens at a transform plate boundary?
Plates slide past each other horizontally.
Which layer of the Earth is semi-fluid and allows for tectonic plate movement?
The asthenosphere.
What type of boundary is associated with the creation of new oceanic crust?
Divergent boundary.
What is the largest tectonic plate?
The Pacific Plate.
Fill in the blank: The _____ boundary is where two tectonic plates collide.
convergent.
What geological feature is commonly formed at a divergent boundary?
Mid-ocean ridges.
Which tectonic plate is located primarily in South America?
South American Plate.
True or False: The Earth’s outer core is solid.
False.
What is a common result of convergent boundaries?
Mountain ranges or volcanic activity.
Name a tectonic plate that is located in the Indian Ocean.
Indian Plate.
What type of boundary can lead to earthquakes?
Transform boundary.
Fill in the blank: The _____ layer of the Earth is responsible for the majority of its mass.
mantle.
Which tectonic plate is located beneath Europe and Asia?
Eurasian Plate.
True or False: The lithosphere includes the crust and the upper mantle.
True.
