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Some bugs can walk on the surface of a lake, stream, river, pond or ocean. In this activity, learners will investigate surface tension of and how it prevents these bugs from sinking under the water’s surface. Learners will test how different substances affect surface tension using paper clips "bugs". Step-by-step instructions are included with photos along with safety recommendations. Activity guide includes a "What's going on?" explanation and relevant connections to water striders and the effects of pollution on aquatic life.
- Under 5 minutes
- 5 to 10 minutes
- $1 - $5 per group of students
- Ages 8 - adult
- Activity, Model
- English
Quick Guide
Materials List (per group of students)
- 4-6 small metal paper clips, 2.5-3.5 cm long (Do not use large or jumbo paper clips, or paper clips with ridges)
- 3 bowls or wide-mouthed containers
- Water
- 1 handful of dirt, sand, or coffee grounds
- Spoon
- Liquid dishwashing detergent or liquid hand soap
Subjects
-
Earth and Space Science
-
Earth Structure
- Oceans and Water
-
Earth Structure
-
Engineering and Technology
-
Technology
- Manufacturing
-
Technology
-
Life Sciences
-
Diversity of Life
- Animals
-
Ecology
- Ecosystems
- Human Impact
-
Diversity of Life
Informal Categories
- Nature and Environment
Audience
Learning styles supported:
- Uses STEM to solve real-world problems
- Involves hands-on or lab activities
Other
This resource is part of:
Access Rights:
- Free access
By:
Source Collection
- DIY Science Apps
Rights:
- , The Regents of the University of California, 2015
Funding Source:
- National Science Foundation, DRL1114663