Forces that Shape Earth Earthquakes and Volcanoes Age of Rocks and Geological Time Scale Paleozoic, Mesozoic, or Cenozoic Era

A force that acts on rock to change it’s shape or volume- it adds potential or stored energy to rock until it changes shape or breaks.

What is stress? Back to Game Board

Three different kinds of stress that can occur in the Earth’s crust.

What are tension, compression, and shearing? Back to Game Board

This type of strain creates a permanent change in the shape of a rock.

What is a plastic strain? Back to Game Board

Each type of stress produces different landforms. Name two landforms created by TENSION.

Back to Game Board What are mid-ocean ridges and continental rifts?

Point beneath Earth’s crust where rock under stress breaks to cause an earthquake.

What is the focus ? Back to Game Board

The molten mixture of rock-forming substances, gases, and water from the mantle.

What is magma? Back to Game Board

Area where material from deep within the mantle rises then melts (ex. Hawaiian Islands).

What is a hot spot ? Back to Game Board

The three types of faults.

What are normal fault, reverse fault, and strike-slip fault? Back to Game Board

Age of rocks compared with ages of other rocks

What is relative age ? Back to Game Board

This time covers about 88% of Earth’s history and very few fossils remain from this time.

What is Precambrian Time ? Back to Game Board

In horizontal sedimentary rock layers the oldest layer is at the bottom; each higher layer is younger than the layer below it.

What is the Law of Superposition? Back to Game Board

Geologist use this to determine the absolute age of rocks by determining the amount of an unstable element in a rock.

What is radioactive dating? Back to Game Board

The oldest of the three eras, which is divided into six periods.

What is the Paleozoic era? Back to Game Board

This era consists of the Tertiary and Quaternary Periods.

What is the Cenozoic era? Back to Game Board

During this era dinosaurs dominated the land.

What is the Mesozoic era? Back to Game Board

You could find the formation of Pangaea in this part of the era.

What is the Late Paleozoic era (Age of Amphibians) ? Back to Game Board

FINAL JEOPARDY! Identify the types of fossils you can find in rocks