https://learn360.infobase.com/p_ViewVideo.aspx?xtid=115369
Circus ringmaster Howie introduces the fabulous juggler Baboo, who juggles more and more balls until… back to reality and the balls drop, breaking a glass. They wonder, “How is glass made?” and visit glassblower Minna at her glass-making studio. They learn about the ingredients used to make glass, how the hot oven heats the ingredients, and Howie helps Minna blow the glass into a drinking glass.
Discover how rocks break down into soil and how slow, natural forces can actually change the shape of Earth’s surface. You’ll learn the four causes of mechanical weathering, as well as the difference between mechanical and chemical weathering.
You can also find out about some of the cool natural phenomena that chemical weathering can cause — like caves!
You'll be introduced to the types of forces that can cause erosion; show you the many kinds of features that erosion can form on the landscape; and explain how weathering and sandblasting leave their mark on both natural and man-made monuments. You’ll also learn about the important role that plants play in the erosion process and discover how a few waves can reshape an entire continent.
