Understanding the Great Alaskan Earthquake

How does the author describe the initial impact of the earthquake in Anchorage?

• The earthquake caused minor tremors that were barely noticeable.

• Roads buckled and sank, and houses pulled apart.

• The earthquake was only felt in the harbor area.

• The earthquake caused no significant damage.

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FL.ELA.6.R.2.1

What is the central idea of paragraphs 1-5?

• The earthquake was a minor event with little impact.

• The earthquake was a significant event that caused widespread damage and was felt across the nation.

• The earthquake only affected the coastal areas of Alaska.

• The earthquake was a routine occurrence in Alaska.

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FL.ELA.6.R.2.2

What did seismographs help with during the 1964 earthquake?

• They were used to predict future earthquakes.

• They helped pinpoint the size and epicenter of the earthquake.

• They were not functional during the earthquake.

• They were used to measure the temperature changes during the earthquake.

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FL.ELA.6.R.2.1

What does the author imply about the earthquake's impact on geology?

• The earthquake had no lasting impact on geological studies.

• The earthquake confirmed the theory of plate tectonics and changed geological understanding.

• The earthquake disproved the theory of plate tectonics.

• The earthquake was only significant for its immediate destruction.

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FL.ELA.6.R.2.2

What does "A New Worldview" suggest about geological theories before the 1964 earthquake?

• Plate tectonics was a well-established theory.

• Plate tectonics was an emerging but unproven concept.

• Geologists had no theories about Earth's structure.

• Plate tectonics was considered a myth.

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FL.ELA.6.R.2.1

What is the central idea of "Sticky Situation"?

• The earthquake was caused by volcanic activity.

• The dynamics of a subduction zone explained the earthquake's magnitude.

• The earthquake was a result of human activity.

• The earthquake had no scientific explanation.

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FL.ELA.6.R.2.2

How did the 1964 earthquake contribute to the understanding of subduction zones?

• It showed that subduction zones do not exist.

• It provided clear evidence of subduction zones and their role in earthquakes.

• It suggested that subduction zones are only found in Alaska.

• It indicated that subduction zones are not related to tectonic activity.

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FL.ELA.6.R.2.1

What does the author imply about George Plafker's findings?

• His findings were irrelevant to the study of earthquakes.

• His findings were crucial in confirming the theory of plate tectonics.

• His findings were only important for local Alaskan geology.

• His findings disproved previous geological theories.

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FL.ELA.6.R.2.2

Explain how the author uses the description of the earthquake's effects to convey its magnitude.

• By describing minor tremors and minimal damage.

• By detailing the widespread destruction and long-lasting impact.

• By focusing only on the scientific data.

• By emphasizing the lack of any significant changes.

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FL.ELA.6.R.2.1

What is the central idea of "The Quake That Shook Up Geology"?

• The earthquake was a minor event with no scientific importance.

• The earthquake was a pivotal event that advanced the understanding of plate tectonics.

• The earthquake was only significant for its immediate destruction in Alaska.

• The earthquake disproved the theory of plate tectonics.

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FL.ELA.6.R.2.2