Geologic Time: Early Earth — Quiz

Question 1

Why do scientists use both ancient Earth rocks and meteorites to understand Earth's early formation?

Revolt · Accepted Answer

Meteorites preserve information lost on Earth due to tectonic activity.

Question 2

Why do scientists use eons, eras, and periods to divide the geologic time scale?

Revolt · Accepted Answer

to mark significant geological and biological changes over time

Question 3

Which statement best compares a craton and a Precambrian shield?

Revolt · Accepted Answer

Cratons are stable continental cores, while shields are exposed portions of cratons.

Question 4

Why do scientists use both ancient Earth rocks and meteorites to understand Earth's early formation?

Revolt · Accepted Answer

Meteorites preserve information lost on Earth due to tectonic activity.

Question 5

Which method allows scientists to determine the age of events like early crust formation and the Great Oxygenation Event?

Revolt · Accepted Answer

radiometric dating ancient rocks

Question 6

Which method allows scientists to determine the age of events like early crust formation and the Great Oxygenation Event?

Revolt · Accepted Answer

radiometric dating ancient rocks

Question 7

Move each answer to the correct box to classify each item as a geologic time interval or a geologic structure.

Revolt · Accepted Answer

Archean Eon,Hadean Eon,Precambrian time|craton,microcontinent,Precambrian shield

Question 8

Why do scientists use eons, eras, and periods to divide the geologic time scale?

Revolt · Accepted Answer

to mark significant geological and biological changes over time

Question 9

Match each feature of early Earth with the geologic process that caused it.

Revolt · Accepted Answer

differentiation|accretion|mantle convection|volcanic outgassing

Question 10

Move each answer to the correct box to classify each item as a geologic time interval or a geologic structure.

Revolt · Accepted Answer

Archean Eon,Hadean Eon,Precambrian time|craton,microcontinent,Precambrian shield

Geologic Time: Early Earth — Quiz Answers