There isn't a concept of "7 chunks of land on Earth" that is widely recognized. It's likely you're thinking of something else.

Could you be referring to:

* The 7 continents: These are the major landmasses on Earth, and they are:

* Asia

* Africa

* North America

* South America

* Antarctica

* Europe

* Australia (sometimes called Oceania)

* The 7 tectonic plates: These are large sections of Earth's crust that move and interact with each other. They are:

* African Plate

* Antarctic Plate

* Eurasian Plate

* Indo-Australian Plate

* North American Plate

* Pacific Plate

* South American Plate

If you can provide more context or a clue, I might be able to help you figure out what you are looking for!