Time

Which Era has the most complex organisms?

• Cenozoic

• Mesozoic

• Paleozoic

• Quaternary

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2

Which Era occurred last (most recent)?

• Cenozoic

• Mesozoic

• Paleozoic

Tags

NGSS.MS-ESS1-4

Which period is closest to present day?

• Cambrian

• Devonian

• Triassic

• Tertiary

What type of environment do you think was present during the Devonian Period?

• mostly land

• land with some water

• mostly water

• water with some land

Tags

NGSS.MS-ESS1-4

What is the oldest organism on the geologic time scale?

• primitive horses

• sea scorpions

• giant insects

• trilobites

Tags

NGSS.MS-ESS1-4

NGSS.MS-LS4-1

Which organisms are the most recent (closest to present day)?

• primitive reptiles

• giant insects

• primitive horses

• brachiopods

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2

a model scientists use to describe the timing of events and the relationships between those events in earth’s history.

• geologic time scale

• era

• period

• epoch

Tags

NGSS.MS-ESS1-4

Directions: The images below show slices of sedimentary rock in Earth's surface in two different locations. Use the images to answer any question that follow. What would be the best way to compare the ages of layers of the same slice?

• by comparing the fossils in each layer, which will have the newest fossils on the bottom and the oldest fossils on the top

• by using the law of superposition, which says the oldest rock will be on the bottom, and the newest rock on the top

• by using radioactive dating, which measures the amount of carbon-14 in an object and compares to its decay rate

• by comparing the rate of sedimentation, which says the layer that formed the quickest will be the oldest

Tags

NGSS.MS-ESS1-4

What does this timeline suggest about Earth?

• It suggests that Earth has changed over time since human fossils became present in the Sahara after 9,000 years, indicating that the environment had been suitable enough to support human life at one time.

• It suggests that Earth has not changed much over time since human fossils were present as early as 9,000 years ago, indicating that Earth's environment has almost always been suitable for the presence of life.

• It suggests that Earth's deserts always receive monsoon rains every 1,000 years.

• It suggests that Earth is only able to preserve fossils in environments that are desert like.

Tags

NGSS.MS-ESS2-2

NGSS.MS-LS2-4

NGSS.MS-LS4-1

What is the primary unit of time in the International System of Units (SI)?

• Second

• Minute

• Hour

• Day