Isotopes are atoms with different amounts of which particle?

• Protons

• Electrons

• Neutrons

Radiometric dating is an example of ​ (a)   dating.

• absolute
• relative
• inverse
• speed
• irrelevant

Tags

NGSS.HS-ESS1-6

Half-life refers to the amount of time for __ percent of radioactive material to decay.

Tags

NGSS.HS-PS1-8

Order the following divisions of the Geologic timeline from LARGEST to SMALLEST (left to right).

• era

• epoch

• period

• eon

From your Geologic Timeline activity, place these organisms from OLDEST to YOUNGEST (left to right)

• First Apes

• Jellyfish

• Ferns

• Amphibians

• First Insects

Tags

NGSS.MS-LS4-1

Match the following principles of relative dating to their definitions.

• different segment of rock is older than surrounding rock.

• correlation

• intrusions are younger than the rock that is disturbed.

• superposition

• fossils in one region match fossils in another region

• original horizontality

• oldest layers is on bottom, newest layer is on top.

• cross-cutting

• sedimentary rocks are laid in (nearly) horizontal layers

• inclusions

Tags

NGSS.MS-ESS1-4

This item is the key piece of evidence putting together the pieces of the Geologic Timeline.

• carbon

• metamorphic rock

• magma

• fossils

Tags

NGSS.MS-ESS1-4

NGSS.MS-ESS2-3

NGSS.MS-LS4-1

Trilobites are a good example of ​ (a)   , given their availability across multiple locations on Earth.

• an index fossil
• superposition
• mineralization
• half-life

Tags

NGSS.MS-LS4-1

Mineralization is the process where ​ (a)   are added from groundwater to form permanent fossils.

• minerals
• nutrients
• water
• sediments
• leftovers

​ (a)   rocks are the best type of rocks for studying the geologic timeline, given their ability to compact and store remains of organisms.

• Sedimentary
• Igneous
• Metamorphic Rocks

Tags

NGSS.MS-ESS1-4

NGSS.MS-LS4-1