topography
![Photo of person pouring water on soil and sand to demonstrate erosion](https://nisenet.org/sites/default/files/styles/curated_list_large_cropped/public/land_activity.jpg?h=dd99b896&itok=we6abGF7)
Exploring Earth: Land Cover
In this activity, learners model some of the ways natural processes affect Earth’s landscape through erosion and sediment pollution.
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![Caregiver and two children using the paper mountains activity](https://nisenet.org/sites/default/files/styles/curated_list_large_cropped/public/2021-06/ExiSci_Space_20180219_1106.jpg?h=2f5fb273&itok=gEMn32ZZ)
Exploring Earth: Paper Mountains
In this activity, learners make unique mountain models from crumpled paper and watching how water moves across them.
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![Blue logo for online workshop recordings](https://nisenet.org/sites/default/files/styles/curated_list_large/public/2020-12/online-workshop-recordings-logo.jpg?itok=9FGQyoMy)
Online Workshop Recording: The Science Behind the Earth and Space Toolkit: The Changing Earth
Online professional development workshop recording (2017).
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![Family traces water line on clear piece of plastic](https://nisenet.org/sites/default/files/styles/curated_list_large_cropped/public/2022-02/ExSci_Space_20180929_1598.jpg?h=f25c14f9&itok=iupUTYMP)
Exploring Earth: Rising Sea
In this activity, learners explore how to use topographical mapping techniques to track changes in sea level and have discussions about the effects of rising sea levels on the environment and coastal communities.
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