Dating of Rocks and Fossils

The layers have been disturbed.

The layers have not been disturbed.

The layers are all the same age.

The layers are sorted by size.

The topmost layer.

The middle layer.

The bottommost layer.

The second layer from the bottom.

To decorate museums

To determine the relative ages of rocks

To create jewelry

To predict weather patterns

By showing current weather patterns

By indicating past climates and environments

By revealing future landscapes

By showing modern ecosystems

A natural rock formation

An ordered arrangement of rock layers based on relative ages

A type of mineral deposit

A mountain range

By volcanic activity

By piecing together different rock sequences from different areas

By erosion

By sedimentation