7.10B Volcanoes

Open Ended

What are some natural processes that could have contributed to the formation of this volcano?

Multiple Choice

What is the difference between magma and lava?

• Magma is molten material beneath Earth's surface, while lava is magma that has reached the surface.

• Magma is solid rock, while lava is liquid.

• Magma is found only at plate boundaries, while lava is found everywhere.

• Magma is cooler than lava.

Multiple Choice

How do volcanoes form at plate boundaries?

• Magma rises through cracks in the crust at plate boundaries and erupts as lava, forming volcanoes.

• Earthquakes cause cracks in the crust and volcanoes form.

• Rainwater seeps into the ground and causes eruptions.

• Wind erosion creates openings for magma to escape.

Multiple Choice

Explain the process by which a hot spot leads to the formation of a supervolcano.

• A hot spot causes tectonic plates to shift, leading to smaller volcanic eruptions.
• A supervolcano forms when a plate remains over a stationary hot

  spot long enough for a massive magma chamber to accumulate.

• A hot spot creates a series of earthquakes that eventually form a mountain range.
• A hot spot cools down magma, preventing any volcanic activity from occurring.

Open Ended

Why do people live near volcanoes despite the dangers?

Multiple Select

Which of the following are economic benefits of living near active volcanoes?

• Fertile soil for crops

• Tourism

• Local energy source

• Frequent earthquakes

Multiple Choice

Which of the following best explains how plate tectonics contribute to the formation of volcanoes?

• Molten material from Earth's mantle rises through cracks at plate boundaries, forming volcanoes.

• Volcanoes form only at the center of tectonic plates, away from boundaries.

• Volcanoes are created by the cooling of magma on the ocean floor, far from plate boundaries.

• Volcanoes form when plates move apart and create mountains.

Multiple Select

Which of the following are reasons why people choose to live near volcanoes?

• Fertile soil for farming

• Access to valuable minerals

• Tourism opportunities

• Low risk of eruptions

Multiple Choice

What kind of plate boundary is shown here?

• divergent
• convergent
• transform
• subducting

Multiple Choice

What kind of plate boundary is shown here?

• divergent
• convergent
• transform
• submergent

Multiple Choice

What kind of plate boundary is shown here?

• divergent
• convergent
• transform
• strike slip

Multiple Choice

What geologic feature/event you be most likely to find at a transform boundary?

• Earthquakes
• Volcanoes
• Mountains
• Rift Valleys

Multiple Choice

What geologic feature/event would you most likely to find at a divergent boundary between two pieces of oceanic crust?

• Rift Valley
• Mid-Ocean Ridge
• Island Arc
• Flat land

Multiple Choice

What geologic feature/event would you most likely to find at a divergent boundary between two pieces of continental crust?

• Mid-Ocean Ridge
• Mountain
• Rift Valley
• Island Arc

Multiple Choice

What geologic feature/event would you most likely to find at a convergent boundary between two pieces of continental crust?

• Volcano
• Mountain
• Rift
• Island Arc

Multiple Choice

A subduction zone is formed...

• when one tectonic plate sinks below another
• at every type of convergent plate boundary
• at every type of divergent plate boundary
• at transform boundaries

Multiple Choice

The area around the pacific plate where boundaries form is called...

• death ring

• fire zone

• ring of fire

• zone of fire

Multiple Choice

The San Andreas Fault in California is an example of a ________.

• divergent boundary
• convergent boundary
• transform fault
• subduction zone

Multiple Choice

Mountains form from ...

• plates sliding past one another
• collision of plates
• plates moving away from each other

Multiple Choice

Oceanic crust is

• Younger and less dense than continental crust
• Thinner, younger and more dense than continental crust
• Older, thicker and less dense that continental crust
• Bigger and younger than continental crust

Multiple Choice

When an underwater earthquake causes a giant wave to come ashore, that wave is known as a...

• seismic wave
• shearing
• focus wave
• tsunami

Multiple Choice

Earthquakes are caused by...

• seismic gaps
• sudden movement of water
• too much drilling along plate boundaries
• sudden movements of rock along a fault

Multiple Choice

The area where two tectonic plates meet.

• mantle
• focus
• plate boundary
• convection

Multiple Choice

What causes tectonic plates to move along the Earth's surface?

• wind
• ocean currents
• convection in the mantle
• expansion of the Earth

Multiple Choice

A trench forms at a _________ boundary.

• convergent
• divergent
• transform
• vertical

Multiple Choice

Fossil records indicate that the continents were once connected. How do fossil records support this claim?

• We have been able to transport the same types of fossils from one continent to another.

• Fossils of the same organism have been found on continents that are now separated by oceans.

• Some continents contain fossils of many different types of organisms.

Multiple Choice

One piece of evidence for Plate Tectonics is that--

• some continents appear to fit together like a puzzle.

• we have video footage of the plates actually moving.

• all continents have formed from volcanic eruptions.

• the continents are no longer moving.

Multiple Choice

Younger crust being found near mid-ocean ridges supports the idea of Plate Tectonics because---

• this indicates that new crust is being formed over time, pushing old crust outward.

• this indicates that volcanoes are able to take place in different places on the Earth.

• this indicates that new crust is never formed.

• this indicates that the continents are stationary.

Multiple Choice

At first, a lack of evidence for continental drift prevented many scientists from believing a single supercontinent called _________ existed.

• Glossopteris

• Pangaea

• Gondwanaland

• Mesosaurus

Multiple Choice

What do the fossils of tropical plants found on islands in the Arctic Ocean indicate about the climate?

• The Arctic Ocean has always been cold.

• The climate was once warm enough to support tropical plants.

• The Arctic Ocean was once a desert.

• The climate has never changed in the Arctic region.