Planet Earth: Hidden Earth

Year Published: 1960

Creator: National Academy of Sciences

Complete Record: From WorldCat: “Traces the history of man's endeavors to study the earth's interior and describes modern instruments and techniques. Explains the significance of volcanic eruptions and earthquakes. Discusses theories regarding the origin of the solar system, the changes in the surface of the earth, the earth's heat flow, Operation Mohole, and the value of seismic exploration of the moon.” Sad faced crowd. Falling buildings. A lot of different shots of seismographs in operation, scientists studying and measuring seismographs and other scientific equipment. Decent sized mountains - mine shaft inside, man doing measurements. Lava. Greek ruins with VO mentioning Mount Vesuvius and Pompeii. Early earthquake devices. P and S wavce description, graphics, etc. Ships rocking from waves in harbor. Andrija Mohorovicic black and white still. Graphics of Earth’s core/mantle. Canyons. Triangular shaped boat in lake drops bombs, geophones buried in ground. Medium sized explosion in lake. Dropping charges and microphoes in the sea from boat - explosions. Antarctica. Man pulling raft on ice. Man digging into ice. Explosion. Saudi Arabia desert with trucks. Digging into ground with shovels. Explosion. Gravitometer being used. Lava flowing, flows off small cliff into ocean. Graphics of volcanoes and liquid rock. Shots with large volcanoes in background and farmers in foreground. Steam coming out of ground in Yosemite National Park. World map graphic with earthquake zones. Thermometers dropped in ocean to measure temperature at the bottom of the sea. Oil rig, workers. Quart seismograph.