TED-Ed: The Earth's age in measurements you can understand - Joshua M. Sneideman

The video explores Earth's 4.6 billion-year history using creative analogies. It compares Earth's timeline to a calendar year, a book, and a human life to illustrate the vastness of geological time. Key events like the Cambrian Explosion, the rise and fall of dinosaurs, and human milestones are highlighted. The video concludes by emphasizing Earth's age and the potential for future learning.

How long ago do geologists estimate the Earth was formed?

• 6.1 billion years ago

• 5.2 billion years ago

• 3.5 billion years ago

• 4.6 billion years ago

In the calendar year analogy, when do multicellular organisms first appear?

• December 10th

• November 11th

• December 31st

• March 3rd

According to the book analogy, how thick would a book be if each page represented one year of Earth's history?

• 145 miles

• 100 miles

• 72 miles

• 200 miles

In the personal life analogy, when do dinosaurs appear?

• End of 7th grade

• First day of high school

• Three months into 8th grade

• First day of 9th grade

How much time before the school bell rings does the Declaration of Independence get signed in the personal life analogy?

• 28 seconds

• 1.3 seconds

• 50 seconds

• 16 minutes