Relative dating powerpoint

Sequencing the rock layers will show students how paleontologists use fossils to give relative dates to rock strata.

Once students begin to grasp "relative" dating, they can extend their knowledge of geologic time by exploring radiometric dating and developing a timeline of Earth's history.

This cooling can occur either within the Earth’s crust, or on the surface.

The different cooling locations form different types of rocks, and also give an indication as to how the rocks were formed.

The Auckland Islands lie approximately 375km south of Stewart Island on the Campbell Plateau.

These islands were formed by multiple geological events.

It is from this field of study that fossils and artifacts are dated based on the perceived age of the geological layers in which they are located.

Basalt, granite and gabbro are all igneous rocks – they form when magma rises from the mantle and cools.

In this activity, students begin a sequencing activity with familiar items — letters written on cards.

Once they are able to manipulate the cards into the correct sequence, they are asked to do a similar sequencing activity using fossil pictures printed on "rock layer" cards.

In dating any object, geologists: When dating an object, a geologist measures some physical property of the object, which is believed to provide evidence regarding its age.

All dating methods rely upon assumptions about the past.

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