What is the main theory behind plate tectonics?
Earth's continents are fixed in place.
The Earth’s crust is completely solid and does not change.
The Earth’s core is made of solid iron only.
Earth's outer layer is divided into large, moving pieces.
What is formed when two tectonic plates collide at a convergent boundary?
Earthquakes ONLY
Ocean ridges
Mountain ranges or deep ocean trenches
Volcanoes
The process of one tectonic plate sliding underneath another is known as:
Convection
Subduction
Earthquake
Seafloor spreading
What is the primary force driving the movement of tectonic plates?
The Earth's rotation
Earth's magnetic field
Convection currents in the mantle
Wind currents
Which of the following is an example of a divergent boundary?
The Mid-Atlantic Ridge
The San Andreas Fault
The Himalayan Mountains
Mount St. Helens
Earthquakes are most commonly associated with which type of plate boundary?
Divergent
Convergent
All types of plate boundaries cause earthquakes
Transform
The Himalayas were formed by the collision of which two tectonic plates?
North American and Eurasian
Indian and Eurasian
African and South American
Pacific and North American
What is the Ring of Fire?
A region where many meteor impacts occur
A series of volcanoes in the Pacific Ocean
A famous earhquake zone in the Atlantic Ocean
A belt of volcanic activity in the Arctic
Which of the following is TRUE about the theory of continental drift?
The movement of continents is caused by ocean currents.
There was once a supercontinent called Pangaea.
The continents have always been in their current positions.
Continental drift is unrelated to plate tectonics.
Where are most volcanic eruptions like to occur?
At transform boundaries
In places where there are no plate movements
In the middle of continents
At convergent and divergent plate boundaries
Which of the following is NOT evidence supporting the theory of plate tectonics?
The distribution of similar fossils across continents
The matching of rock layers on different continents
The shape of the continents, which appear to fit together
The presence of deep ocean trenches only at mid-ocean ridges
What happens at a transform boundary?
Plates move towards each other and form mountains.
Plates move away from each other and form new crust.
Plates move downward into the mantle.
Plates slide past each other horizontally; earthquakes
What is seafloor spreading?
The formation of new volcanoes in the ocean
The sinking of oceanic plates at subduction zones
When new oceanic crust is created at mid-ocean ridges
The movement of continents across the ocean floor
Which of the following best describes the Earth's lithosphere?
The inner core of the Earth
The rigid outer layer, which is broken into tectonic plates
The layer of molten rock beneath the crust
A region where oceanic plates meet continental plates
Which major tectonic plate is composed of almost 100% oceanic crust?
Pacific
African
North American
Eurasian
