Extended Geologic Time and Earth's History

Life did not live beyond the protection of water.

According to the graph, which animal first appeared about 430 m.y.a.?

What ended the dinosaurs reign?

The time it takes for HALF of the atoms in a sample of radioactive element to decay is called:

Life became dominated by warm blooded dinosaurs.

When did the graptolite go extinct?

Put the following mountain ranges in order from oldest to youngest.

Which of the following is FALSE about the Cenozoic Era?

What is the main cause of global climate change (warming) right now?

We humans live in what era

Permian, Triassic, and Tertiary are all known as

Which of the following is the correct breakdown of the geologic time periods?

What geologic era is known as the Age of Mammals?

What fossil fuel used today formed back during the Carboniferous period when swamps existed?

Which of the following understands that species change over time?

If one is identifying a general date of time by comparing it to other events, this is...

When a scientist needs to know with confidence the age of a rock, which method would they use?

The dinosaurs went bye bye how many years ago?

Approximately, when did the planet experience the warmest global warming?

Which best describes the Paleozoic?

Which of the following specifically is the result of gravity?

Approximately, when did the planet experience the coldest part of this ice age?

Eras are divided into ___________________

From the graph on the right, which of the following follows the Principle of Cross-Cutting?

From the graph on the right, which of the following is the oldest?

Which era is known as the Age of Reptiles?

Life became dominated by mammals that nursed their young.

What is this thing?!?!

Which of the following is NOT a fact about the Paleozoic Era?

The Geologic Time Scale is best described as:

From the graph on the right, which of the following experiences the angular unconformity ?

From the graph on the right, which of the following is an igneous intrusion?

Why study Earth's Geologic Timeline?

This rock best represents which principle?

Scientists are able to determine the exact age of a rock or fossil through______________

What method of dating do scientists use to determine the age of bones, teeth, organic matter?

Eons are divided into ...

Index fossils and rock correlation are used to determine...

Eras are divided into ...

Periods are divided into ...