6: Erosion, Weathering by Laura Duggan https://padlet.com/lduggan15/6Erosion Make observations and/or measurements to provide evidence of the effects of weathering or the rate of erosion by water, ice, wind, or vegetation. [Clarification Statement: Examples of variables to test could include angle of slope in the downhill movement of water, amount of vegetation, speed of wind, relative rate of deposition, cycles of freezing and thawing of water, cycles of heating and cooling, and volume of water flow.] [Assessment Boundary: Assessment is limited to a single form of weathering or erosion.] en-us 2013-07-07 05:41:16 UTC 2025-09-28 09:29:10 UTC hello@padlet.com http://www.nextgenscience.org/sites/all/themes/science/logo.png RAFT idea lduggan15 https://padlet.com/lduggan15/6Erosion/wish/11100905
Landslide

During a landslide or an avalanche, materials sort according to grain-size and density, creating layers. This activity models this sorting phenomenon using simple RAFT materials, including a CD jewel case and masking tape.

]]> 2013-07-07 05:42:39 UTC https://padlet.com/lduggan15/6Erosion/wish/11100905 Video lduggan15 https://padlet.com/lduggan15/6Erosion/wish/11193804

Mercury in the Bay Part 1 Did you know that mercury extracts gold out of rock? In this video from QUEST produced by KQED, explore how mercury mined during the gold rush has left a toxic legacy in California.

]]> 2013-07-13 23:33:45 UTC https://padlet.com/lduggan15/6Erosion/wish/11193804 Salmon Video lduggan15 https://padlet.com/lduggan15/6Erosion/wish/11193807

Saving California's Salmon In this video from QUEST produced by KQED, learn how local biologists and volunteers are working to bring back the native salmon habitat after decades of human influence.

]]> 2013-07-13 23:36:17 UTC https://padlet.com/lduggan15/6Erosion/wish/11193807 Video lduggan15 https://padlet.com/lduggan15/6Erosion/wish/11193808

Decreasing California Snowpack Approximately 40 percent of California's surface water supply originates from the snowpack in the Sierra Nevada Mountains. However, climate change is significantly altering this precious water source.

]]> 2013-07-13 23:37:27 UTC https://padlet.com/lduggan15/6Erosion/wish/11193808 RAFT Idea lduggan15 https://padlet.com/lduggan15/6Erosion/wish/11196925
Patterns in the Sand

In this activity, students observe patterns created in baking soda, modeling patterns created by sand and other substances in nature.

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