Volcanoes & Earthquakes

At which location does the movement of tectonic plates form isolated volcanic islands, such as Hawaii?

• transform boundary

• divergent boundary

• subduction zone

• hot spot

The islands in the mid-Pacific Ocean region were formed by

• land subsidence

• deposition from currents

• wind and water erosion

• volcanic activity

Which BEST explains the cause of the geysers formed in Yellowstone National Park?

• erosion

• earthquakes

• volcanic activity

• artesian springs

Which statement BEST explains why Iceland has so many active volcanoes?

• Iceland overlies a boundary between two tectonic plates that are colliding.

• Iceland overlies a boundary between two tectonic plates that are moving apart.

• Iceland is on a single tectonic plate and is far from any plate boundaries.

• Iceland is on a single tectonic plate that is moving under another plate.

The Hawaiian Islands are in the middle of a large tectonic plate with many volcanoes. The volcanoes are the direct result of the tectonic plate

• being forced under another tectonic plate at a subduction zones.

• colliding with one another tectonic plate and being forced upward.

• moving over a hot spot where magma breaks through the crust.

• applying great pressure on the crust causing constant earthquakes.

Which of these geologic features results from tectonic plates slowly moving over a hot spot?

• plateaus

• islands

• canyons

• deltas

The diagram shows two converging oceanic plates. As Plate 1 subducts under Plate 2, what will MOST likely begin to form at Point 3?

• mid-ocean ridge

• strike-slip fault

• volcanic island

• rift zone

The Hawaiian Islands are of volcanic origin. Many scientists thought that each island had an individual magma plume or hot spot that erupted and formed the islands. Other scientists speculated that these islands were the result of a single hot spot. Which of these statements BEST supports the single hot spot hypothesis?

• The Pacific tectonic plate is too small to have multiple hot spots.

• The hot spot was large enough to form all the islands at the same time.

• The volcanoes at hot spots have only one eruption which lasts for hundreds of years.

• The locations of the volcanoes match the movement of the Pacific tectonic plate over a hot spot.

In certain areas, tectonic plates move over hot spots. Which landforms are MOST likely associated with these hot spots?

• trenches

• volcanoes

• island arcs

• mid-ocean ridges

The Appalachian mountain range stopped forming approximately 250 million years ago. The Himalayan mountain range is still actively forming by tectonic forces. Which is MOST likely true of the Himalayan mountain range compared to the Appalachian mountain range?

• It is closer to sea level.

• It has a more rounded profile.

• It is made of higher-density rock.

• It has more earthquakes per year.