Earth science relative dating activity

However, "relative" dating or time can be an easy concept for students to learn.

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

Fossils are important for working out the relative ages of sedimentary rocks.

Throughout the history of life, different organisms have appeared, flourished and become extinct.

Time factors of millions and billions of years is difficult even for adults to comprehend.

By doing this, you will unravel the geologic history recorded in the rock record, just as geologists did hundreds of years ago, and still do today. An earlier current-formed ripple set (at bottom of slide) was later modified by a second ripple train migrating at right angles to the first.

Crests of the first set are preserved in the troughs of the second set, hence, the ladderback appearance.

Correlation can involve matching an undated rock with a dated one at another location.

Suppose you find a fossil at one place that cannot be dated using absolute methods.

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