Geography Flashcards
What are the three main layers of the Earth?
The three main layers are the crust, mantle, and core.
True or False: The Earth’s crust is the thickest layer.
False
Fill in the blank: The outer core is primarily composed of _____ and nickel.
iron
What is the state of matter of the mantle?
The mantle is mostly solid but behaves like a viscous fluid over long periods.
Which layer of the Earth is responsible for tectonic activity?
The lithosphere, which includes the crust and the uppermost part of the mantle.
Multiple Choice: What is the temperature range of the inner core? A) 2000-4000°C B) 4000-6000°C C) 6000-8000°C
B) 4000-6000°C
What is the primary component of the Earth’s crust?
The Earth’s crust is primarily composed of silicate rocks.
True or False: The mantle is less dense than the crust.
False
What is the approximate thickness of the Earth’s crust?
The Earth’s crust is approximately 5 to 70 kilometers thick.
Fill in the blank: The _____ core is liquid and generates the Earth’s magnetic field.
outer
What is the main theory that explains the movement of Earth’s lithosphere?
Plate tectonic theory
True or False: The Earth’s crust is divided into several large plates that float on the mantle.
True
Fill in the blank: The movement of tectonic plates is driven by __________ in the Earth’s mantle.
convection currents
What are the three main types of plate boundaries?
Divergent, convergent, and transform boundaries
Which type of boundary is characterized by plates moving away from each other?
Divergent boundary
Short answer: What geological features are commonly formed at convergent boundaries?
Mountains, earthquakes, and volcanoes
Multiple choice: Which of the following is NOT a result of plate tectonics? A) Earthquakes B) Volcanic eruptions C) Weather patterns
C) Weather patterns
True or False: The Pacific Plate is the largest tectonic plate.
True
Fill in the blank: The area where two tectonic plates slide past each other is known as a __________ boundary.
transform
Short answer: What is the theory that explains the creation of new oceanic crust?
Seafloor spreading
What are tectonic plates?
Large sections of the Earth’s lithosphere that move and interact with each other.
True or False: Earthquakes only occur at plate boundaries.
True
Fill in the blank: The _____ is a boundary where two tectonic plates slide past each other.
transform fault
Which type of plate boundary is associated with the formation of mountains?
Convergent boundary