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Earth Landscapes 4-ESS1-1

NGSS

absolute dating

any method of measuring the age of an object, like tree rings or carbon dating
absolute dating Simple Definition

erosion

the process in which rock is worn away and transported by water, wind or ice
erosion Simple Definition

fossil

the preserved traces and remains of an organism that lived long ago
fossil Simple Definition

geologic time scale

a timeline of Earth's history based on major changes
geologic time scale Simple Definition

index fossil

a fossil from an organism that existed for a short time, it is used to determine the age of other fossils
index fossil Simple Definition

relative dating

a method of comparing fossils or rocks to determine which is older
relative dating Simple Definition

weathering

the processes which break down rocks
weathering Simple Definition

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