Week 28 Flashcardizz

Front

What is the geologic time scale?

Back

The geologic time scale is a record of the history of rock layers and fossils.

Front

Why did Alfred Wegener think South America and Africa have similar coastlines?

Back

He thought that the continents used to be joined together.

Front

What evidence supports the theory that continents were once joined?

Back

Fossilized evidence of the same organism found on different continents.

Front

In which era did the Triassic, Jurassic, and Cretaceous periods occur?

Back

Mesozoic Era.

Front

What does Carbon-14 dating measure?

Back

Carbon-14 dating works well for finding the age of dead plants, animals, and fossils.

Front

What is Pangaea?

Back

Pangaea was a supercontinent that existed around 250 million years ago, where all continents were joined together.

Front

What are glacial grooves?

Back

Glacial grooves are scratches or gouges cut into bedrock by glacial movement, providing evidence of past glacial activity.

Front

What is the significance of mesosaurus fossils found on different continents?

Back

Mesosaurus fossils found on both South America and Africa support the idea that these continents were once connected.

Front

What is the difference between the Cenozoic and Mesozoic eras?

Back

The Mesozoic Era is known for the age of dinosaurs, while the Cenozoic Era is known as the age of mammals.

Front

How do scientists use rock layers to understand Earth's history?

Back

Scientists study rock layers to determine the relative ages of rocks and the fossils within them, revealing Earth's geological history.