Relative Age- Fossils, Rock Layers, & Geologic time

What do geologists use to map out Earth's history?

• Rocks

• Stars

• Oceans

• Mountains

Tags

NGSS.MS-ESS1-4

NGSS.MS-ESS2-3

According to the law of superposition, which rock layer is the oldest?

• The middle layer

• The layer with the most fossils

• The bottom layer

• The top layer

Tags

NGSS.MS-ESS1-4

What is an igneous intrusion?

• A volcanic eruption

• Molten rock that has cooled and cuts through other layers

• A type of fossil

• A layer of sedimentary rock

Tags

NGSS.MS-ESS2-1

What are index fossils used for?

• Finding the location of a rock

• Identifying the type of rock

• Pointing to when a rock was formed on the geologic time scale

• Determining the exact age of a rock

Tags

NGSS.MS-ESS1-4

What did relative dating help geologists figure out about stegosauruses and T-rexes?

• They lived at the same time

• They never existed

• Stegosauruses were extinct long before T-rexes existed

• T-rexes were extinct long before stegosauruses existed

Tags

NGSS.MS-ESS1-4

NGSS.MS-LS4-1