Review for Quiz 1/24/20

What is the main purpose of the geologic time scale?

• To organize the major eras of Earth's history
• To compare very short and very long periods of time
• To compete with other, non-geologic time scales
• To help understand that the planet is really old

Generally speaking, which rock layers are the oldest?

• The thinnest ones
• The thickest ones
• The ones furthest from the surface
• The ones closest to the surface

What era do we live in?

• Cenozoic

• Paleozoic

• Mesozoic

• Precambrian

What organism is responsible for building oxygen levels in the atmosphere? 

• Humans
• Jellyfish
• Cyanobacteria
•  Birds

Modern humans (Homo sapiens) and dinosaurs never existed together on Earth.

• True
• False

Which of the following places the geologic time eras in order from oldest to most recent?

• Precambrian, Paleozoic, Mesozoic, Cenozoic
• Mesozoic, Cenozoic, Paleozoic, Precambrian
• Cenozoic, Mesozoic, Paleozoic, Precambrian
• Paleozoic, Cenozoic, Precambrian, Mesozoic

Scientists chose where units of geologic time began and ended based on major changes in life forms at certain times.

• True
• False

Tags

NGSS.MS-ESS1-4

NGSS.MS-LS4-1

__________ are the remains or traces of prehistoric life. They are important components of sediment and sedimentary rocks.

• Fossils
• Ambers
• Gymnosperms
• Ferns

Pangaea refers to a...

• large supercontinent
• Greek superhero
• Tropical fern
• Mass extinction

What type of rock do fossils form in?

• Igneous
• Sedimentary
• Metamorphic
• Classic