Geologic Time Scale Concepts

The video tutorial by Ms. H covers the geologic time scale, explaining its structure from eons to epochs. It provides instructions for accessing assignments on Canvas, including a discussion post and a geologic time scale table. The Phenerozoic eon and its eras are detailed, along with the significance of Pre-Cambrian time. Students are guided through a concept check and an activity involving a football field representation of Earth's history.

What is the first step students should take when accessing the lesson on the geologic time scale?

• Click on the discussion post and choose a question to answer.

• Watch the entire video tutorial.

• Reply to a classmate's post.

• Download the geologic time scale table.

What principle do geologists use to determine the age of rocks?

• Absolute dating

• Radiometric dating

• Relative dating

• Carbon dating

Which of the following is the correct order of divisions in the geologic time scale from largest to smallest?

• Period, Epoch, Eon, Era

• Eon, Era, Period, Epoch

• Era, Eon, Epoch, Period

• Epoch, Period, Era, Eon

Which eon are we currently in?

• Hadean

• Archean

• Proterozoic

• Phanerozoic

What era is known as the 'middle life' era?

• Mesozoic

• Paleozoic

• Cenozoic

• Neoproterozoic

What percentage of Earth's history is covered by the Precambrian time?

• 95%

• 88%

• 75%

• 50%

Why are fossils from the Precambrian time difficult to study?

• They are made of hard materials.

• They are too small to see.

• They are often destroyed by rock movements.

• They are found only in remote areas.

What is the purpose of the football field analogy in the geologic time activity?

• To measure the length of time periods.

• To visualize Earth's history on a relatable scale.

• To compare different geological events.

• To calculate the age of fossils.

What should students do after watching the video on Earth's history?

• Write a summary of the video.

• Take a quiz on the video content.

• Discuss the video with a classmate.

• Complete the football field activity.

What is the conversion factor used in the football field activity?

• 10 million years equals 1 yard

• 1 million years equals 1 yard

• 100 million years equals 1 yard

• 50 million years equals 1 yard