Vaalbara

High school (ages 12+)
Geography

Name:

Date:

Step 1 · Read the article

Open the article and read it at the level above. Then answer the questions below in your own words.

https://smallwhale.org/articles/vaalbara

Write what each word means, using the article.

Do not copy the article. Write two things you learned, the way you would explain them to a friend.

Answers below are taken from the article’s stored facts, so they match what the student read.

1. What is the hypothetical supercontinent?Vaalbara is a proposed supercontinent from the Archean Eon
2. What is the component cratons?Composed of the Kaapvaal Craton (South Africa) and Pilbara Craton (Australia)
3. Why do scientists think Vaalbara might have existed?Because the rocks in the Kaapvaal and Pilbara cratons are the same age and look very similar, showing they were once connected.
4. How do scientists study a supercontinent that lived so long ago?They look at the age of rocks with radiometric dating, compare minerals and structures, and use magnetic data to guess where the pieces were.

Archean Eon: A geological eon spanning from 4 billion to 2.5 billion years ago, characterized by early crust formation.
Craton: A stable, ancient block of continental lithosphere, forming the nucleus of a continent.
Paleogeography: The study of the past geographical features and distribution of continents and oceans.