Guide 7B
Long-Term
Changes in Geology & Life
In this guide we are viewing changes that occur over years, decades, centuries, & longer.
Video Overview
Watch this guide overview video.
You can select the closed captioning “cc” option if you would like to see the text.
Long-Term Guide Contents
Complete all four of these sections before taking the quiz and making your media piece.
Long-Term Objectives
Geologic Time
Define stratigraphy and explain how layers of rocks can provide information; define geochronology, including what is used to date fossil rocks; and describe the types of fossils found in Oregon coastal areas, as well as the history of significant freshwater ecosystems.
Streams
Describe how stream orders are calculated as streams increase in size; link stream order to levels of photosynthesis; and explain how streams can change over time, including the characteristics and impact of beavers.
Lakes
Classify lakes based on productivity and identify three different lake zones; identify microscopic and macroscopic photosynthetic pond organisms; and identify microscopic and macroscopic pond consumers and incorporate them, along with producers and decomposers, into a pond food web.
Wetlands
Provide examples of different types of wetlands; describe various wetland functions including why it is challenging to rebuild a wetland; and list characteristics of amphibian species including the frog life cycle.
Long-Term Product Page
Look ahead to the products (quiz & media piece) you will be making after completing this guide’s four activity pages.
Long-Term Resource Page
Would you like to learn more than what is covered in this course? Visit these extra resources for a lifetime of learning.
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