Geological Timescale Lesson

Geological Time Scale

Multiple Choice

What is the most recent period of geologic time?

• Cenozoic

• Quaternary

• Recent

Multiple Choice

What is the largest/major unit of geologic time?

• Epoch

• Period

• Era

Multiple Choice

The Earth is _____________________ years old.

• 4.6 million

• 4.6 billion

• 4.6 trillion

• 4.6 zillion

Multiple Choice

During which period did snakes first appear?

• Permian

• Carboniferous

• Devonian

• Silurian

Multiple Choice

Which era best represents when humans first appeared on Earth?

• Cenozoic

• Mesozoic

• Archean

• Hadean

Multiple Choice

The end of the Mesozoic Era was most likely caused by?

• A meteor

• Too much oxygen

• Lowering sea levels

• An ice age

Multiple Choice

The end of an era, and the end of life for groups of organisms, is called?

• Death

• Mass extinction

• Transition

• Turning point

Multiple Choice

Which era was the longest, taking up 88% of geologic time?

• Precambrian

• Paleozoic

• Mesozoic

• Cenozoic

Multiple Choice

Dinosaurs, small mammals, and birds are found in this time period.

• Precambrian

• Paleozoic

• Mesozoic

• Cenozoic

Multiple Choice

In what time period did Pangaea, the super continent, appear?

• Precambrian

• Paleozoic

• Mesozoic

• Cenozoic

Multiple Choice

Jellyfish are one of the oldest species on Earth. In what time period did they first appear?

• Precambrian

• Paleozoic

• Mesozoic

• Cenozoic

Multiple Choice

Paleontologists infer that the earth is approximately how many years old?

• 4.5 million years
• 450 million years
• 450 billion years
• 4.5 billion years

Multiple Choice

The geologic time scale is a record of....

• the history of fossils only
• the history of rocks
• the history of rock layers and fossils
• geologist notes

Multiple Choice

Which period are we currently in?

• Quaternary
• Holocene
• Jurassic
• Tertiary

Multiple Choice

 The Quaternary period, where humans first appeared, is in the Mesozoic era.

• True
• False

Multiple Choice

___________ a record of the geologic events and the evolution of life forms as shown in the fossil record. 

• Eras
• Geologic Time Scale

Multiple Choice

Scientists chose where units of geologic time began on major changes in ______________ at certain times.

• life forms
• events

Multiple Choice

The Triassic Period, the Jurassic Period, and the Cretaceous Period occurred in what era?

• Cenozoic
• Mesozoic

Multiple Choice

_______________ is the long span of time that begins geologic time.

• Precambrian Time

• Cenozoic Time

Multiple Choice

_______________ is the long span of time that begins geologic time.

• Precambrian Time

• Cenozoic Time