Rock layers can be disturbed by many things. An example would be

Scientists are studying rock layers in the desert. In one layer of rock, a geologist finds many fossils of plants and trees. The geologist can infer

An intrusion and a fault are ALWAYS younger than the layers they cut through. This can be explained by

are remains of species that existed on Earth for a certain time and can be used to find the relative age of rock layers.

Dating method that gives you the exact age of rock or fossils.

Superposition states that in undisturbed rock, the oldest layers are

Lines that are close together on a topographic map represent

_____ develop when agents of erosion remove rock layers by washing, scraping, or blowing them away.

I use the _____ _____ on a topographic map to figure out how the contour line are counting.

A topographic profile is different from a topographic map because

The time it takes for half of a parent atom to turn into a daughter atom.

On a topographic map, a river flows