Wind (DVD) glasswear-plasticware Contains 15 representative specimens of

Contains 15 representative specimens of intrusive and extrusive igneous rocks

Students learn about energy transfer through food chains while observing skeletal features which identify prey animals consumed

Heat-resistant glass funnel

1 drying tube one bulb

Crowd Control: Essential for security personnel to manage crowds during special events

Wind (DVD) glasswear-plasticware Contains 15 representative specimens ofThis program explores the mechanics of measuring wind speed and direction as well as the use of wind as an energy source. Students will also learn how wind occurs by finding out about the roles of temperature, air pressure and the sun. Graphics and animation will clearly illustrate these patterns. Students will also learn how hot air balloons work in this exciting look at weather's invisible force. One of six volumes in the Weather Fundamentals DVD