What's the earth made of?
Título:
What's the earth made of?
Resumen:
Discusses rocks and minerals, p and s waves, volcanoes, rock cycle, mid-ocean ridge, and mountain formation. Explains how the Grand Canyon helps geologists to learn about the Earth, how meteorites and their formation help to explain how the Earth was formed, and how seismographs show that the Earth is constantly changing. BPN 3818 01.
Fecha de publicación como intervalo:
1995
Descripción física:
1 videocassette (25 min.) : col., VHS
Nota general:
18.00
Autor corporativo añadido:
Información de publicación:
National Geographic Society : 1995.
