The Science Quiz | A brief history of the earth

Updated - June 21, 2024 05:33 pm IST

Published - June 21, 2024 01:03 pm IST

Questions:

1. In the earth’s first geologic aeon, the moon was created, in the process also laying the groundwork for an atmosphere rich in hydrogen, water vapour, and carbon dioxide. This period is named for a famous Greek god. Name it.

2. Some 720-630 million years ago, the Cryogenian period immediately followed another billion-year-long period called the ______ _______. The latter was called so because the earth’s crust was quite stable in this time, evolution proceeded at a slow pace, and the climate didn’t change considerably. Fill in the blanks.

3. The shortest period of the Palaeozoic era was called the Silurian. It began right after the first of the earth’s five ____ __________ events, during which the diversity of marine genera plummeted drastically worldwide. Fill in the blanks.

4. In Ancient Greek, the name of this geologic epoch means “new dawn”. It was given this name because life-forms that persist on the earth today began evolving at the start of this epoch. Name this epoch.

5. In 2018, the International Commission on Stratigraphy confirmed the name of our current geologic era. It comes from the name of a state in India, which is home to one of the country’s longest caves and where scientists found stalagmites that recorded evidence of the geological transition leading to the present one. Name the state.

Visual:

Name the geologic period named after the mountains shown in this image. Public Domain

Answers:

1. Hadean aeon

2. Boring Billion

3. Mass extinction

4. Eocene

5. Meghalaya

Visual: Jurassic period

0 / 0
Sign in to unlock member-only benefits!
  • Access 10 free stories every month
  • Save stories to read later
  • Access to comment on every story
  • Sign-up/manage your newsletter subscriptions with a single click
  • Get notified by email for early access to discounts & offers on our products
Sign in

Comments

Comments have to be in English, and in full sentences. They cannot be abusive or personal. Please abide by our community guidelines for posting your comments.

We have migrated to a new commenting platform. If you are already a registered user of The Hindu and logged in, you may continue to engage with our articles. If you do not have an account please register and login to post comments. Users can access their older comments by logging into their accounts on Vuukle.