State the Principle of Uniformitarianism
States that the geologic processes that happened in the past can be explained by current geologic processes
Describe Ways Organisms Can Be Preserved As Fossils
They can be trapped in asphalt, amber, being petrified, being frozen, and sediment
Can be trapped due to the hardened tree sap or is in a thick, sticky state
3 Examples of Trace Fossils
Tracks, burrows, and coprolite
How Do Fossils Provide Evidence of Geologic Change
Tell scientists about how the environment changes over time and how life forms have changed over time
Shows if there was a fish fossil on a mountain, means the water levels used to be higher
Relate the Composition and Texture of Sedimentary Rocks to the Environment in Which the Rocks Formed
Composition of the rock shows where its from
Texture and size shows what the environment was like
Features like ripple marks and mud cracks show the stillness and motion of the water
Describe and Give Evidence for the Movement of Continents Over Time
Earth’s surface is always changing
Natural disasters
Distribution of rocks, Fossils, and mountains on Earth’s surface
List 3 types of Evidence That Support Earth’s Climate Has Changed Over Time
Ice cores: Give a history of the precipitation and concentration of gases in the atmosphere
Sea floor sediments: Contains fossil remains of microscopic organisms in built up layers and tells us how the climate was at the time
Thickness of Tree Rings: Learn about the climate during the tree’s life
Fossil
The trace or remains of organisms that lived long ago
Trace Fossil
Fossilized structure that formed sedimentary rock by animal activity on or in soft sediment
