Geologic Events

What is the geological time scale?

• a time line dividing  the Earth's history into units representing millions of years.
• A time line of the past  100 years of development.
• The period of time that describes when the dinosaurs lived.

Tags

NGSS.MS-ESS1-4

These have formed, reformed and moved over time.

• continental landmasses
• the oceans
• the governments of North America

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3

Which of these numbers is closest to the age of the Earth?

• 4,600 years
• 460,000 years
• 4.6 billion years 

Tags

NGSS.MS-ESS1-4

When there is a significant lack of fossil evidence in the Earth's rock beds from a specific time period after 544 million years ago, scientist believe that a ________ has taken place.

• mass extinction
• population explosion
• aquatic event

Tags

NGSS.MS-LS4-1

This was developed in order to organize the major eras of Earth's history.

• geological time scale
• atmospheric time scale
• aquatic time scale

Tags

NGSS.MS-ESS1-4

Generally speaking, which rock layers are the oldest?

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

Tags

NGSS.MS-ESS1-4

What event might mark the end of a period?

• the fact that 100 million years has passed since the end of the last period.
• a major geological change
• the appearance of a new species

Tags

NGSS.MS-ESS1-4

NGSS.MS-LS4-1

How does radiometric dating differ from the ages of the geological time scale?

• radiometric dating involves absolute dating involves absolute dates; the geological time scale is measured with relative dates
• radiometric dating can only be used on fossils; the geologiical time scale applies only to rocks
• radiometric dating involves unstable, radioactive isotopes; the geological time scale deals only with stable rocks and compounds

What does carbon-14 decay into?

• Nitrogen
• Lead
• Cobalt

Tags

NGSS.HS-PS1-8

_______________ is the idea that older rock layers can be found below younger rock layers in undisturbed geologic columns.

• principal of original horizontality
• principal of superposition
• principal of cross-cutting relationships

Tags

NGSS.MS-ESS1-4