Relative dating webquest

This is an informational tour in which students gain a basic understanding of geologic time, the evidence for events in Earth’s history, relative and absolute dating techniques, and the significance of the Geologic Time Scale.This interactive asks you to use your knowledge of relative dating. Help us work out the relative ages of the layers of sedimentary rocks.Examines evidence from the fossil record, behavior, biomechanics and cladistic analysis to interpret the sequence of events that led to flight in the dinosaur lineage.Students gather, organize and analyze data and then propose hypotheses about the evolution of flight in birds.The disk is probably a religious symbol as well as a crude astronomical instrument or calendar.In the Western hemisphere, similar understanding of basic stellar and planetary behavior was developing.The earliest recorded astronomical observation is the Nebra sky disk from northern Europe dating approximately 1,600 BC (see above).

This Understanding Evolution interactive investigation takes students through the amazing evolutionary history of arthropods, introducing them to taxonomy, paleontology, natural history and principles of evolution.

The Paleontology Portal includes explorations of famous fossil assemblages, a searchable set of fossil images, and a tool allowing you to map the ages of rocks in your own state and view corresponding fossils.

Provides an introduction to cladistics (a way of organizing living things by common ancestry and evolutionary relationships) and involves students in posing hypotheses about past life based upon evolutionary history. Students join "science mentors" to gather data and interpret direct and indirect evidence to propose multiple hypotheses of what life was like in Montana 60-70 million years ago.

C.) recorded position of planets, times of eclipses, etc.

- also evidence from early Chinese, Central American and North European cultures such as Stonehenge, which is a big computer for calculating the position of planets and the Sun (i.e.

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