EH 3: Catastrophes & Earth History

What causes dust and smoke to rise into the atmosphere?

What event can cause the sun to be blocked out for long periods of time?

At the end of the Mesozoic Era, who became extinct?

The Mesozoic Era ended with...

Where are volcanoes located?

What sends ash & dust high into the atmosphere to be carried around Earth?

What produce volcanic activity during the Paleozoic Era?

Impacts cause extinctions when

Dust and smoke in the atmosphere caused

New land environments and shallow sea levels caused

Impacts of an asteroid or comet impacts...

Movement of landmasses in the Mesozoic Era caused

Which was not a side-effect of volcanic activity in the Precambrian Era?

Environmental changes cause

Which event affects organisms?

In the Paleozoic Era, there were...

In the Cenozoic Era, many ...... formed causing ........ due to elevation

During the Precambrian Era, continents collide to form...

What has always been a part of Earth's CHANGING conditions?

The Earth's ..... often protects Earth from meteors by burning them up before they strike Earth

In the Mesozoic Era, plants and animals adapted to survive with

What caused the earliest life forms?

Climate is..

In the Precambrian Era, the cause of many organisms' death was

What causes environmental changes?

Climates on Earth

Major ice ages in the Cenozoic Era caused

An ice age occurred in what era?

Environmental changes cause...

The study of timing, location, & size of prehistoric earthquakes

At the end of Mesozoic Era, who thrived?