Fossils and Evolution

Front

What is a cast in fossil formation?

Back

A cast is a fossil that forms when sediments fill in a cavity left by a decayed organism.

Front

What is natural selection?

Back

Natural selection is the process where differences in survival rates occur due to inherited characteristics.

Front

What does it mean when an organism is described as extinct?

Back

An extinct organism is one that no longer exists on Earth.

Front

What is the purpose of carbon-14 dating?

Back

Carbon-14 dating is used to determine the absolute age of organic materials.

Front

What is the correct order of rock layers from oldest to youngest?

Back

Limestone, Siltstone, Fault, Basalt.

Front

What is a mold in fossil formation?

Back

A mold is a fossil that forms when an organism leaves an impression in sediment.

Front

What is the difference between relative age and absolute age?

Back

Relative age is the age of a rock layer compared to other layers, while absolute age is the exact age of a rock or fossil.

Front

What is the significance of fossils in understanding evolution?

Back

Fossils provide evidence of past life forms and show how species have changed over time.

Front

What is the role of sediment in fossil formation?

Back

Sediment helps preserve organisms by covering them and preventing decay.

Front

What is the principle of superposition?

Back

The principle of superposition states that in undisturbed rock layers, the oldest layers are at the bottom and the youngest are at the top.