Geologic Time Scale

1. relative dating

• finding out how old a rock is in actual years

• the rate of atom decay

•  finding out how old one rock is compared to another rock

• the end of a group of organisms

Tags

NGSS.MS-ESS1-4

1. mass extinction

• remains of an organism that lived in the past

• the end of a group of organisms

• finding out how old one rock is compared to another rock

• the rate of atom decay

Tags

NGSS.MS-ESS1-4

NGSS.MS-LS4-1

1. fossils

• finding out how old one rock is compared to another rock

• the end of a group of organisms

• remains of an organism that lived in the past

•  finding out how old a rock is in actual years

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2

1. half-life

• finding out how old a rock is in actual years

• the rate of atom decay

• finding out how old one rock is compared to another rock

•  the end of a group of organisms

Tags

NGSS.MS-ESS1-4

Which statements in this list refer to relative dating? Choose TWO correct answers.

• It is like saying you are younger than your mother.

• Disturbances in the rock layers make this type of dating difficult.

• This is also called radiometric dating.

• This uses the decay of radioactive elements to find the age.

• Relies on the property of half-life, which is the predictable time for an element to decay.

Tags

NGSS.MS-ESS1-4

Which of the following eras are the longest in the geologic time scale?

• Precambrian Time

• Paleozoic Era

• Mesozoic Era

• Cenozoic Era

Tags

NGSS.MS-ESS1-4

Which of the following eras are the shortest in the geologic time scale?

• Precambrian Time

• Paleozoic Era

• Mesozoic Era

• Cenozoic Era

Tags

NGSS.MS-ESS1-4

Which of the following eras are the oldest in the geologic time scale?

• Cenozoic Era

• Precambrian

• Paleozoic Era

• Mesozoic Era

Tags

NGSS.MS-ESS1-4

What Era are we currently in?

• Cenozoic Era

• Precambrian

• Paleozoic Era

• Mesozoic Era

Tags

NGSS.MS-ESS1-4

Which rock layer is the newest?

• the top layer

• the middle layers

• the bottom layers

• you can't tell which layer is older

Tags

NGSS.MS-ESS1-4