Geologic Eras C4U

Front

What is an asteroid?

Back

A small rocky body that orbits the Sun, often found in the asteroid belt between Mars and Jupiter.

Front

What is an index fossil?

Back

A fossil that is used to define and identify a particular time period in the geologic time scale, typically widespread and short-lived.

Front

What era is known for the dominance of ocean organisms?

Back

The Paleozoic Era.

Front

What can ice core samples tell scientists?

Back

They can provide information about past climate conditions, including temperature and atmospheric composition.

Front

Which fossil is considered the youngest?

Back

The fern fossil.

Front

What is the significance of the dust from an asteroid impact?

Back

It can block sunlight, leading to a drop in temperature and affecting the climate.

Front

What are the four main geologic eras?

Back

Precambrian, Paleozoic, Mesozoic, and Cenozoic.

Front

What is the Precambrian Era known for?

Back

It is known for the formation of the Earth and the earliest forms of life.

Front

What major event marks the end of the Mesozoic Era?

Back

The mass extinction event that wiped out the dinosaurs.

Front

What type of organisms dominated the Cenozoic Era?

Back

Mammals and birds.