EALS-Q1-Summative Test 3

What do you call a method of arranging geological events based on the rock sequence?

• Stratification

• Relative Dating

• Absolute Dating

• Radiometric Dating

Relative dating of rock layers tells us that the deeper we dig, _______.

• the younger the rocks get

• the smellier the rocks get

• the harder the rocks get

• the older the rocks get

Which of the following is required in measuring the age of a lava flow by means of radiometric dating?

• Comparing the proportion of radioactive parent isotope to stable daughter product in the rock.

• Assessing the level of radioactivity emitted by the isotopes in a sample of the rock with a Geiger counter.

• Evaluating the changes in the rock’s mineral structure to determine the sample’s exposure to ionizing radiation.

• Analyzing changes in the atomic number of the radioactive isotopes in the rock by measuring beta and alpha emissions from a sample.

The diagram at the left shows a cross section of a portion of Earth’s crust that has NOT been overturned during the Paleozoic era. Letters A, B, C and D represent sedimentary rock layers that contain fossils.

Which rock layer contains the oldest fossils?

• A

• B

• C

• D

In the stratification of soil or rocks, if Layer A is over and above Layer B, then Layer A is:

• older than Layer B

• younger than Layer B

• the same age as Layer B

• as old as Layer B

The hierarchical ordering system of geologic time uses numerous nested divisions. Which of the following lists is ordered from largest (longest) to smallest (shortest)?

• Epoch → Period → Era → Eon

• Period → Epoch → Era → Eon

• Eon → Era → Period → Epoch

• Epoch → Eon → Era → Period

This refers to the division of Earth’s history based on life forms which lived during that period.

• Historical Dating

• Geologic Time Scale

• Prehistoric Life Scale

• Relative Dating

What do you call the methods used by geologists to determine the general sequence of geologic events from oldest to youngest?

• geochronology

• absolute dating

• general dating

• relative dating

Which of the following is a form of ground failure that is sometimes related to earthquake activity?

• Lahars

• Avalanche

• Tsunami

• Liquefaction

The image at the right shows a map of the distribution of earthquakes across Region VII or Central Visayas. Referring to the map, which of the following provinces is highly prone to geologic disasters

• Cebu

• Bohol

• Siquijor

• Negros Oriental