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WorksheetsREVIEW PART 2
Total questions: 25
Worksheet time: 13mins
Which statement is accurate based on the figure displaying global earthquake distribution, where white lines indicate plate boundaries?
Earthquakes exclusively happen along plate boundaries.
Earthquakes are most commonly found along plate boundaries.
Earthquakes seldom take place along plate boundaries.
Earthquakes do not occur along plate boundaries.
A normal fault forms when forces push two blocks of rock away from each other. At which type of plate boundary does this happen, and why?
Convergent plate boundary – Plates move toward each other.
Convergent plate boundary – Plates move apart.
Divergent plate boundary – Plates move apart.
Divergent plate boundary – Plates move toward each other.
Which statement correctly describes a pyroclastic flow?
Pyroclastic flows travel faster than 100 km/hr and reach temperatures above 2,000°C.
Pyroclastic flows form when melted snow and ice mix with ash and mud on the mountain.
Pyroclastic flows move slowly and are rarely dangerous.
Pyroclastic flows move rapidly but remain relatively cool.
What movement between two blocks of rock along a fault triggers an earthquake?
Sliding past each other horizontally
Moving toward each other
Pulling apart from each other
Any of the above
What is the average number of volcanoes that erupt each year?
(a)
On the moment magnitude scale, each step represents 31.5 times more energy release. Approximately how much more motion does a magnitude 7 earthquake have compared to a magnitude 4 earthquake?
90 times
900 times
27,000 times
3,000 times
Lava flows, such as the one from Mount Etna
Can last for more than six months.
Move rapidly and result in many deaths.
Seldom cause any damage.
Never lead to town evacuations.
What best describes the composition of volcanic ash?
Particles of pulverized rock and vegetation
Pulverized bits of glass
Pulverized particles of rock
Particles of pulverized rock and glass
How does rising mantle material at mid-ocean ridges contribute to ridge push?
It forces plates to move toward the ridge.
It generates pressure, pushing plates away from the ridge.
It produces new crust that later sinks into the mantle.
It cools and shifts plates vertically.
How do convection currents in the asthenosphere contribute to plate movement?
They generate heat that pushes plates apart.
A material, dragging the lithosphere like a conveyor belt.
They cool the mantle, causing plates to sink.
They cause volcanic eruptions that move the plates.
Why are basal drag, ridge push, and slab pull considered the primary forces driving plate motion?
They cause volcanic activity that pushes the plates apart.
They are influenced by atmospheric wind patterns.
They produce heat from the Earth's core.
They collaborate to move the lithosphere.
They trigger volcanic activity that forces the plates apart.
Why do scientists use the Global Positioning System (GPS) to measure the movement of continents?
GPS tracks the locations of stars for geological studies.
GPS measures ocean currents to observe plate motion.
GPS is utilized to examine seismic waves during earthquakes.
GPS provides precise data on plate movements.
How does subduction happen at a convergent plate boundary?
The denser plate descends beneath the less dense plate.
Both plates move sideways, creating faults.
The plates move upward, leading to volcanic eruptions.
The more buoyant plate sinks, forming deep ocean trenches.
What is formed when two continental plates collide at a convergent boundary?
One plate is forced beneath the other, creating a trench.
Mountains are formed as rock is pushed upward.
Earthquakes occur without the formation of mountains.
Volcanic activity results in the creation of new islands.
How are ocean trenches and volcanoes connected to subduction zones?
The oceanic plate sinks, forming a trench and a line of volcanoes above it.
Subduction causes plate collisions, resulting in trenches and volcanic islands.
Subduction of continental plates leads to the formation of mountain ranges, not volcanoes.
Oceanic plates move to the surface, creating volcanoes without forming trenches.
What occurs when plates become stuck at a transform plate boundary?
They stop moving until outside forces affect them.
They change direction, creating new plate boundaries.
Stress accumulates, and eventually the plates fracture and shift suddenly.
The plates collapse, leading to a volcanic eruption.
How does the lithosphere's thickness differ beneath mid-ocean ridges and continents?
It is thicker beneath mid-ocean ridges.
It has a uniform thickness everywhere.
It is thinner beneath continents
It is thinner at mid-ocean ridges and thicker under continents.
What enables Earth's tectonic plates to move?
The flexible behavior of the asthenosphere beneath the lithosphere.
The solid nature of the lithosphere.
The flow of magma in the mantle.
The gravitational force of the Sun.
Why is energy released quickly as earthquakes at transform plate boundaries?
Plates are pushed together, releasing accumulated energy.
The sudden release of stress causes the plates to move quickly.
Magma moves easily from the mantle, producing shock waves.
Plates separate and crash together at high speeds, causing friction.
How do volcanoes form at plate boundaries?
Where plates separate, collide, or subduct.
Where plates move independently.
Only along continental boundaries.
Where plates stop moving.
What type of plate boundary exists between the Nazca Plate and the South American Plate, as shown in the figure above?
Convergent oceanic-oceanic plate boundary
Convergent continental-continental plate boundary
Convergent oceanic-continental plate boundary
Transform boundary
What do sediment age and thermal energy measurements near mid-ocean ridges indicate?
Greater thermal energy is emitted near the ridges, backing up the idea of seafloor spreading.
Sediment near the ridges is older, challenging the theory of seafloor spreading.
Sediment age and thermal energy are unrelated.
Thermal energy accelerates the aging of sediment near the ridges.
How does the term "tectonic" relate to geology?
It pertains to the study of Earth's atmosphere.
It describes the chemical makeup of Earth's crust.
It refers to the forces that shape Earth's surface and rock formations.
It determines the age of Earth's rocks.
What do the parallel magnetic patterns in iron-rich volcanic rocks on either side of a mid-ocean ridge suggest?
The Earth's magnetic field has never undergone a reversal.
Iron-rich minerals in the rocks capture the direction of Earth's magnetic field, providing evidence for seafloor spreading.
Magnetic minerals in lava are unaffected by Earth's magnetic field.
The magnetic patterns form solely during volcanic eruptions and are not related to plate movement.
Why is studying normal and reversed polarity important for seafloor spreading?
It clarifies the consistency of Earth's magnetic field.
It demonstrates that tectonic activity does not affect the magnetic field.
It verifies that the magnetic field has never reversed.
It shows alternating magnetic patterns on the seafloor, providing evidence for seafloor spreading.
