12/6 BR: Relative Age V.1

Front

What is the Law of Superposition?

Back

The Law of Superposition states that in undisturbed rock layers, the oldest layers are at the bottom and the youngest layers are at the top.

Front

How do you determine the relative age of rock layers?

Back

You determine the relative age of rock layers using relative dating, which is any method of determining whether something is older or younger than something else.

Front

Which rock layer is the youngest according to the Law of Superposition?

Back

The youngest rock layer is the one at the top of the sequence.

Front

What does it mean if a rock layer is found above another layer?

Back

If a rock layer is found above another layer, it is younger than the layer below it.

Front

What is relative dating?

Back

Relative dating is a method used to determine the age of rocks and fossils in relation to one another.

Front

What can be inferred if pottery is found in a rock layer above a skull?

Back

The pottery is more recent than the skull, indicating that the rock layer with the pottery is younger.

Front

What is an intrusion in geology?

Back

An intrusion is a body of igneous rock that forms when magma cools and solidifies beneath the Earth's surface.

Front

What is the significance of fossils in relative dating?

Back

Fossils help in relative dating by providing evidence of the age of the rock layers in which they are found.

Front

What is the principle of original horizontality?

Back

The principle of original horizontality states that layers of sediment are originally deposited horizontally under the action of gravity.

Front

What does it mean if two rock layers are found to be the same age?

Back

If two rock layers are found to be the same age, they are said to be isochronous, meaning they were formed at the same time.