Pbs Learning Media: Density and Buoyancy: Mixing Hot and Cold Water

ZOOM cast members mix different amounts of baking soda and vinegar to see which combination produces the most carbon dioxide for launching a film-canister rocket. [3:23]

This video segment, adapted from ZOOM, explores how sound waves travel differently through air than through solids like a yardstick, a baseball bat, and a golf club. [1:46]

This video segment from ZOOM compares and contrasts the habitat and life forms found in Death Valley with those found in the temperate rain forest of the Pacific Northwest. [3:46]

Water can exist in three different phases. This still collage produced for Teachers' Domain features examples of water in liquid, solid, and gas states.

In this video segment produced for Teachers' Domain, observe frozen water in winter and liquid water in summer, at the same location. [0:31]

Explore landforms and water bodies in this animated video [8:49] from PEEP and the Big Wide World. Three adventurous friends -- Peep, Chirp, and Quack -- have a firsthand encounter with a very big rock stuck on the steep slope of a hill....

In this video segment, the ZOOM cast relies on the surface tension of water to make paper clips float. [2:20]

Through the Ready To Learn (RTL) Initiative, the Corporation for Public Broadcasting (CPB), PBS, and local PBS stations provide free, evidence-based educational resources that help teachers, caregivers, and parents build early science...

Learn about root systems of trees in the Congaree Swamp National Park in this video segment from NatureScene. [2:50]

In this video, students learn a variety of fitness activities in which they depict the water cycle though movement.