Heat : blacksmith of the Earth

Genre: Television

Year Published: 1958

Creator: Mary Lela Grimes Robert Larsen Betty Sears WGBH-TV Lowell Institute Cooperative Broadcasting Council Massachusetts Audubon Society Children's Museum of Boston

Format: 16mm

Description: This program will introduce volcanism and the rocks (igneous) which result from heat. Igneous rocks are formed from molten rock and can befound either beneath the earth’s surface or on the surface. Identification of them is made by texture. this dependson where they cooled, and how fast the cooling took place. You will examine the texture and characteristics of someof the common igneous rocks. Granite is one of these and has many different forms. Basalt is another, a dense rock with small crystals, but having a different chemical make-up from that of granite. You’ll find out too about the formations in which igneous rocks are frequently found; dikes, sheets, sills, and laccoliths. Finally you will see a miniature volcano erupt to introduce the most catastrophic form of volcanism, and the rocks formed from this kind of heat; obsidian, pumice, and scoria.

Complete Record: This program will introduce volcanism and the rocks (igneous) which result from heat. Igneous rocks are formed from molten rock and can befound either beneath the earth’s surface or on the surface. Identification of them is made by texture. this dependson where they cooled, and how fast the cooling took place. You will examine the texture and characteristics of someof the common igneous rocks. Granite is one of these and has many different forms. Basalt is another, a dense rock with small crystals, but having a different chemical make-up from that of granite. You’ll find out too about the formations in which igneous rocks are frequently found; dikes, sheets, sills, and laccoliths. Finally you will see a miniature volcano erupt to introduce the most catastrophic form of volcanism, and the rocks formed from this kind of heat; obsidian, pumice, and scoria., This program will introduce volcanism and the rocks (igneous) which result from heat. Igneous rocks are formed from molten rock and can befound either beneath the earth’s surface or on the surface. Identification of them is made by texture. this dependson where they cooled, and how fast the cooling took place. You will examine the texture and characteristics of someof the common igneous rocks. Granite is one of these and has many different forms. Basalt is another, a dense rock with small crystals, but having a different chemical make-up from that of granite. You’ll find out too about the formations in which igneous rocks are frequently found; dikes, sheets, sills, and laccoliths. Finally you will see a miniature volcano erupt to introduce the most catastrophic form of volcanism, and the rocks formed from this kind of heat; obsidian, pumice, and scoria.NOTE: Two (or more) records have been merged together to create this data.