Geologic history

What might you conclude if a fish fossil was found on top of a mountain in Kentucky?

• An Earthquake happened there.
• A Volcano erupted there.
• A forest covered that area for a while.
• A Sea once covered the area.

Tags

NGSS.MS-ESS1-4

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3

NGSS.MS-LS4-1

Relative age of a rock is the number of years that have passed since the rock formed?            

• true
• false

Tags

NGSS.MS-ESS1-4

A rock formed with 500 atoms of a radioactive parent element, but only contains 125 radioactive parent atoms today.  If the half-life is 1000 years, how old is the rock?

• 2000 years
• 500 years
• 250 years
• 125 years

Relative dating of rock layers tells us that the deeper we dig, _______.

• the younger the rocks get
• the smellier the rocks get
• the harder the rocks get
• the older the rocks get

Tags

NGSS.MS-ESS1-4

The Law of Superposition helps scientists to determine what?

• The absolute age of rock layers
• The age of fossils
• The relative age of rock layers
• the super powers of rocks

Tags

NGSS.MS-ESS1-4

What type of rock do fossils form in?

• Igneous
• Sedimentary
• Metamorphic
• Classic

Radiometric dating is often referred to as 

• total age.
• absolute age.
• historic age.
• geologic age.

Tags

NGSS.HS-ESS1-6

When an igneous intrusion is found in a layer, what do we know about its age?

• The intrusion is younger than the rock.
• The intrusion is older than the rock
• The intrusion is the same age as the rock.
• The intrusion was made by ailens.

Tags

NGSS.MS-ESS1-4

When an unstable radioactive atom decays, it usually turns into:

• a more stable atom
• a less stable atom
• the exact same atom but with less pure energy
• empty space

Tags

NGSS.HS-PS1-8

Radiometric dating is possible because the rates of decay of radioactive isotopes _____.

• change over time
• change from place to place
• are constant
• vary widely

Tags

NGSS.HS-PS1-8