Relative Dating & The Law of Superposition

According to the Law of Superposition which letter represents the oldest layer?

• E

• D

• C

• B

• A

Tags

NGSS.MS-ESS1-4

Used to determine whether an object is older or younger than other objects

• Superposition
• Relative Dating
• Fossil
• Unconformity

States that younger rocks lie above older rocks if the layers have not been disturbed

• Law of crosscutting
• Law of superposition
• Relative Dating
• Unconformity

Tags

NGSS.MS-ESS1-4

How do geologists use relative dating?

• Placing rocks in order from youngest to oldest
• Placing rocks in order by minerals they contain
• Classifying rocks by different textures
• Classifying rocks by different isotopes

Tags

NGSS.MS-ESS1-4

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 best index fossils have which two traits?

• widespread geographically, long lifespan
• widespread geographically, short lifespan
• specific place, long lifespan
• specific place, short lifespan

Index fossils help determine relative age through correlating rock layers.

• True
• False

Tags

NGSS.MS-ESS1-4

Which rock layer most likely contains fossils of the most recently evolved organisms?

• 1
• 2
• 3
• 4

Tags

NGSS.MS-ESS1-4

NGSS.MS-LS4-1

To be considered an index fossil, it had to have lived for a relatively short period of time.

• True
• False

Tags

NGSS.MS-ESS1-4

NGSS.MS-LS4-1

Which of the following can be learned by using the fossil record?

• When organisms changed or evolved

• when organisms appeared on Earth

• when organisms became extinct

• All the above

Tags

NGSS.MS-LS4-1