'Geomagnetic time scale' presentation slideshows

OBJECTIVE

1.2k views • 94 slides

SO, HOW DID THE OCEANS FORM?

SO, HOW DID THE OCEANS FORM?. Earth was molten at first Heavy metals migrated to the center while lighter elements moved toward the surface Hydrogen and oxygen migrated toward the surface to form an atmosphere. Volcanic activity released gases, including water, trapped within the Earth.

1.13k views • 49 slides

Chapter Eleven

Chapter Eleven. The Record of the Past. Fossils and Their Interpretation. A fossil is the remains or traces of an ancient organism. Several conditions must be met for fossilization to occur.

295 views • 9 slides