Law of Superposition

Front

What is the Law of Superposition?

Back

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

Front

Which rock layer is typically the oldest?

Back

The oldest rock layer is usually found at the bottom of a sequence of sedimentary rocks.

Front

What does the Law of Superposition help geologists determine?

Back

It helps geologists determine the relative ages of rock layers and the fossils within them.

Front

If Layer A is above Layer B, which layer is younger?

Back

Layer A is younger than Layer B.

Front

Where are the oldest fossils typically found according to the Law of Superposition?

Back

The oldest fossils are typically found near the bottom of the rock layers.

Front

What is a fossil?

Back

A fossil is the preserved remains or traces of a once-living organism.

Front

Name a type of fossil that is considered relatively old.

Back

Trilobite is considered a relatively old fossil.

Front

What is the significance of the order of rock layers?

Back

The order of rock layers helps in understanding the geological history and the timeline of life on Earth.

Front

How can the Law of Superposition be applied in real-world geology?

Back

It can be used to date rock formations and understand the sequence of geological events.

Front

What is a sedimentary rock?

Back

Sedimentary rock is formed by the accumulation and compaction of mineral and organic particles.