D1 Practice

Front

What is the difference between relative age and absolute age of rock layers?

Back

Relative age refers to the age of a rock layer compared to other layers, while absolute age is the actual age of the rock layer in years.

Front

How do scientists estimate the ages of fossils?

Back

By using the position of the fossils in rock layers and the actual age of those layers.

Front

What type of rock layers are organisms with complex body plans more likely to be found in?

Back

Younger rock layers.

Front

What general pattern of complexity is observed in fossilized organisms over time?

Back

There is an increasing pattern of complexity in fossilized organisms.

Front

What happens to biodiversity during a mass extinction event?

Back

Biodiversity decreases.

Front

What does the presence of similar structures in embryos of different species suggest?

Back

It suggests that they have a common ancestor.

Front

What is a mass extinction event?

Back

A mass extinction event is a rapid decrease in the biodiversity on Earth, where a significant number of species become extinct in a relatively short period.

Front

What is the significance of studying rock layers in understanding Earth's history?

Back

Studying rock layers helps scientists understand the chronological order of events and the evolution of life on Earth.

Front

What is the principle of superposition in geology?

Back

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

Front

How can fossils be used to understand past environments?

Back

Fossils provide evidence of the types of organisms that lived in a particular environment, helping scientists infer the conditions of that environment.