FACE OF THE EARTH (10 films)

Duration: 29 min

Year Published: 1957

Creator: KQED

Format: 16mm

Color: B&W

Sound: Sound

Description: Kinescopes. Titles are: 1. TIME & TOOLS: INTRODUCTION. Provides an introduction to the series. Explains the various tools used by the geologist and the importance of time in the study of the earth. Shows why the face of the earth is "unchanging" yet "ever-changing." Investigates and evaluates present day clues used to understand the changes in earth history. 2. PLAIN DIRT. Explains the physical and chemical processes of weathering. Shows how rock is converted into soil and then reconverted to rock. Discusses these processes as they relate to the changing nature of the earth's surface. 3. EROSION. Describes the work of water in forming the finer features of the earth. Explains the hydrologic cycle. Shows the mechanics of water as it erodes and moves materials over the surface eventually shaping valleys, canyons, plains, and deltas. 4. THE RIVER. Shows erosive characteristics of rivers. Explains where rivers are formed and how they differ in size, motion, and shape. Shows why rivers meander thus producing river cycles. Demonstrates the behavior characteristics of great rivers with a miniature laboratory river. 5. SCULPTURE OF THE LAND. Reviews early concepts concerning the formation of hills and valleys. Discusses the various factors which bring about erosion. Shows the evolution of a valley as it proceeds through the ages of youth, maturity, and old age. Explains the rate of land destruction and how the surface of the earth is continually lowered and raised again. 6. GLACIATION. Explains how glaciers are formed. Discusses three types of glaciers and their movement. Demonstrates how glaciers erode the surface of the earth. Points out areas on the earth's surface where glaciers are at work today and shows evidence of glacial work in the geologic past. 7. THE SEACOAST. Demonstrates how ocean waves shape the seacoast. Explains the action of ocean waves in forming beaches, spits, and sea cliffs. Outlines the development of a shoreline through its various stages of change from youth through maturity and finally old age. 8. SEDIMENTATION. Shows how nature makes a solid rock through the compaction of clays, sands, and silts under great pressure. Explains how age of rocks is determined through a knowledge of plant and animal fossils. Discusses changes in land mass of North America as a result of the rising and receding of the oceans. 9. BREAKING AND BENDING. Explains the factors involved in earth movement. Shows the mechanics whereby rock may be folded and bent. Points out the relationship of erosion to the breaking and bending of the earth's crust in forming land features. 10. MOUNTAIN BUILDING. Explains the origin of mountains. Discusses the formation of sedimentary rock, deformation, and the final uplifting. Concludes with a brief summary of the preceding programs.

Complete Record: Source: NET Interest level: jh-sh-ad Price: rent ea $4.75 Format: sd b&w

Metadata Source:Educational film guide. Supplements (1959-62)