Age of Rocks

When Elements break down and change into another element it is called...

• radiation

• isotope

• decay

• half-life

The __________of rocks is the age of rocks in years.

• relative age

• half-life

• absolute age

• earth age

Geologist use _________ to determine the absolute age of rocks.

• absolute age dating

• relative age dating

• radiometric dating

All organisms contain the element_________, so it is used to find the ages of fossils.

• carbon

• cobalt

• zircon

• gold

Scientific law that states in horizontal sedimentary rock, the oldest layers are at the bottom

• intrusion

• fault

• index fossil

• superposition

Tags

NGSS.MS-ESS1-4

Rock that forms when magma or lava hardens

• Metamorphic

• igneous

• Sedimentary

Lava that hardens on the surface

• intrusion

• extrusion

magma that pushes into bodies of rock

• Extrusion

• intrusion

An intrusion is always ___________ than the rock layers around it and beneath it

• younger

• older

Tags

NGSS.MS-ESS1-4

A ________________ is a break in Earth's crust

• intrusion

• fault

• extrusion

• igneous rock