New SAT Reading Practice Test 13

Home > SAT Test > SAT Reading Practice Tests

Test Information

Question 10 questions

Time 14 minutes

See All test questions

Take more free SAT Reading Practice Tests available from cracksat.net.

This passage is adapted from David P. Hill, Roy A. Bailey, James W. Hendley II, Peter H. Stauffer, Mae Marcaida, "California's Restless Giant: The Long Valley Caldera." © 2014 by U.S. Geological Survey.









Long Valley Caldera cumulative earthquakes between 1983 and 2015, USGS. The vertical bars on the graphs above correspond with the left-side y-axis and represent the number of earthquakes per week. The thicker gray line indicates the cumulative number of earthquakes and corresponds with the right-side y-axis.

1. As used in line 10, "depression" most nearly means

  • A. dejection.
  • B. decrease.
  • C. crater.
  • D. trouble.

2. The authors use the phrase "as recently as 600 years ago" (line 22) primarily to

  • A. suggest that there will be another eruption this century.
  • B. convey a sense of the magnitude of geologic time.
  • C. communicate irony, because 600 years ago is not recent.
  • D. indicate that the word 'recently' is a relative term.

3. As used in line 38, "temblor" most nearly means

  • A. drum.
  • B. earthquake.
  • C. eruption.
  • D. caldera.

4. What is the reason geologists have increased their monitoring of the Long Valley Caldera?

  • A. It has been more than 150 years since the last eruption.
  • B. Eruptions happen frequently in volcanic chains of such size.
  • C. The area is experiencing geologic activity indicative of an impending eruption.
  • D. The swelling of the caldera may damage the sensitive geodetic equipment.

5. Which choice provide the best evidence for the answer to the previous question?

  • A. Lines 19-24 ("The volcanic…mid-1800s")
  • B. Lines 38-39 ("That temblor…California")
  • C. Lines 58-60 ("Today,…caldera")
  • D. Lines 70-72 ("Such emissions…eruptions")

6. In the context of the passage as a whole, what is the primary purpose of the last paragraph?

  • A. To suggest that geologists believe danger from an eruption is not imminent
  • B. To explain how quickly geologic unrest can turn into a catastrophic eruption
  • C. To warn of the dire impact of another eruption like Mount St. Helens
  • D. To emphasize the impact of the earthquakes discussed earlier in the passage

7. It can be inferred from the passage that Mammoth Mountain

  • A. erupted most recently around 600 years ago.
  • B. is an active volcano that the USGS is monitoring for early signs of eruption.
  • C. shows signs that the larger volcanic system to which it belongs is still active.
  • D. was formed 760,000 years ago by pyroclastic flows from a volcanic eruption.

8. Which choice provides the best evidence for the answer to the previous question?

  • A. Lines 1-5 ("About 760,000…surface.")
  • B. Lines 19-24 ("The volcanic system…mid-1800s)
  • C. Lines 25-27 ("Although no…frequently.)
  • D. Lines 75-77 ("However, symptoms…Caldera")

9. Which of the following situations is most analogous to the recent swelling of the Long Valley Caldera?

  • A. Many small tremors along a particular fault precede a large, magnitude 8 earthquake.
  • B. A scientist discovers a new species of insect by chance while observing snakes in the Amazon rainforest.
  • C. Bad road conditions cause a collision between two cars, and poor visibility contributes to a multi-car pile-up.
  • D. A doctor is unable to give a definitive diagnosis to a patient after assessing symptoms typical of a particular disease.

10. Which of the following claims is supported by information in the graph?

  • A. Long Valley Caldera had experienced more than 120,000 cumulative earthquakes by 2015.
  • B. Long Valley Caldera experienced roughly 30,000 earthquakes per week in 1990.
  • C. By 2012, Long Valley Caldera had experienced 1.2 cumulative earthquakes.
  • D. By 1988, Long Valley Caldera had experienced over 2,500 cumulative earthquakes.