Earth's Landscapes

Front

What are the youngest rocks in a geological formation?

Back

The rocks at the top of the formation are the youngest.

Front

What evidence indicates that an area was once underwater?

Back

Fossils such as shark teeth can indicate that an area was once under the ocean.

Front

What do fossils provide evidence of?

Back

Fossils provide evidence of past life.

Front

What is the scientific study of fossils called?

Back

Paleontology.

Front

How do scientists determine the age of fossils?

Back

Scientists use radiocarbon dating to accurately determine the age of fossils.

Front

What is radiocarbon dating?

Back

Radiocarbon dating is a method used to determine the age of an object containing organic material by measuring the amount of carbon-14 it contains.

Front

What types of rocks are typically found at the bottom of a geological formation?

Back

The oldest rocks are typically found at the bottom of a geological formation.

Front

What is the significance of fossils in understanding Earth's history?

Back

Fossils help scientists understand the types of organisms that existed in the past and the environments they lived in.

Front

What are some common types of fossils?

Back

Common types of fossils include bones, teeth, shells, and imprints of organisms.

Front

What is the principle of superposition in geology?

Back

The principle of superposition states that in an undeformed sequence of sedimentary rocks, the oldest layers are at the bottom and the youngest are at the top.