Geological Features and Processes

The video explains plate tectonics and how continents move, highlighting that North America shifts westward by two inches annually. It discusses Illinois' past as a tropical ocean and the presence of crinoid fossils, often called Indian beads. The video details the collision of North America with Europe and Africa, forming mountains that eroded over time. Rivers carried eroded material to Illinois, creating a delta, transforming the region from an ocean to a landmass.

What is the average rate at which continents move each year?

• Two inches

• One inch

• Four inches

• Three inches

Where was Illinois located 400-500 million years ago?

• Near the equator

• Near the South Pole

• Near the Prime Meridian

• Near the North Pole

What are crinoids commonly referred to as?

• Coral stones

• Sea stars

• Ocean pearls

• Indian beads

Crinoids are closely related to which marine animal?

• Sea turtles

• Dolphins

• Starfish

• Jellyfish

What major geological event changed Illinois from a tropical ocean?

• Volcanic eruption

• Earthquake

• Continental collision

• Tsunami

Which continents collided with North America to form a mountain range?

• Asia and Africa

• South America and Antarctica

• Europe and Africa

• Asia and Australia

What natural processes contributed to the erosion of the newly formed mountains?

• Glacial movement

• Earthquakes

• Wind and water

• Volcanic activity

What is the term for the structure formed by river deposits at the ocean?

• Plateau

• Delta

• Canyon

• Basin

Which river is mentioned as an example of forming a delta today?

• Yangtze River

• Amazon River

• Nile River

• Mississippi River

What geological feature did the rivers create in Illinois by depositing mountain material?

• A basin

• A plateau

• A delta

• A canyon