'Cambrian period' diaporamas de présentation

Fish

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Chapter 34

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CAMBRIAN JEOPARDY

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Fossils

Fossils. Mr. Litaker. How are fossils created. There are five major ways in which a fossil can be preserved. They are: Petrification molds impressions amber and sedimentary fossils . Petrification.

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Geologic Time

Geologic Time. Methods of Dating Rocks. Relative dating - Using fundamental principles of geology (Steno's Laws, Fossil Succession, etc.) to determine the relative ages of rocks (which rocks are older and which are younger).

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The Geological Time Scale

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The Emergence of Complex Life on Earth

The Emergence of Complex Life on Earth. THE SCOPES TRIAL A plaque that commemorates the trial stands in front of the courthouse that states: 2B 23.

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The Fossil Record

The Fossil Record. Provides evidence about the history of life on Earth. It also shows how different groups of organisms, including species, have changed over time. Age of fossil with respect to another rock or fossil (that is, older or younger). Age of a fossil in years.

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Lesson Overview

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Permian

Permian. Greg Daviduck & Alex Dreger. The Permian Time Period.

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The Design of Organisms

The Design of Organisms. What Patterns do you see?. Body Plans. The great diversity of plant and animal forms arises from a surprisingly small number of patterns. Although some organisms have complex shapes, we will begin looking at simple systems. Spheres, Tubes, and Fans.

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History of the Earth

History of the Earth. Chapter 12. How Old is the Earth?. Early Earth 4.5 Billion Years Old Before then it was a fiery ball of molten rock. The water vapor from the atmosphere cooled and formed vast oceans. How Old is the Earth?. How do we know?

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Precambrian Era

Precambrian Era . By Erich Hartman. When It Occurred. The Precambrian Era occurred from 4.6 billion years ago to 544 million years ago. It was the first of four eras on the geological time scale. The Precambrian Supereon.

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Phanerozoic eon

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Characteristics and Classes of Arthropods

Characteristics and Classes of Arthropods. By Jerit Owens. General Characteristics of All Arthropods. All have exoskeletons for support and protection All have jointed appendages Body regions include: a head, thorax, and an abdomen.

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C hordates

C hordates. Maria Garcia And Sasha espinola. Phylum Chordata. Classification of Chordates include characteristics such as:. Structure of Chordate. Notochord: Supporting rod that runs through the body just below the nerve cord. Some chordates only have an notochord when they are embryos.

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