Running Water: From Rain to River to Ocean

An introduction to water and the hydrologic processes. Investigates laminar, turbulent and shooting flow; waterfalls, V-shaped canyons and washes. Also includes the relationship between velocity, gradient, discharge and the type of stream that occurs.

20 mins. | IV24D $32.95 DVD

20 mins. | IV24V $29.95 VHS

Running Water: Erosion, Deposition and Transportation

Running water changes the surface of the earth by cutting away rock in one place, carrying this load and then depositing it in another place. This program explores the relationship of running water to the land. Concepts investigated include suspension, solution, load, rapids, potholes, meanders, braided streams, deltas, alluvial fans, waterfalls and flood plains. Also explores characteristics found in youthful, mature and old streams.

21 mins. | IV26D $32.95 DVD

21 mins. | IV26V $29.95 VHS

Weathering and Erosion

This program explores how the surface of the earth is in constant struggle with the elements. Wind, running water, gravity and temperature changes break down rock formations and carry away material to build up deltas, beaches, geosynclines and dunes. This program was filmed all over America.

Subjects covered include: the difference between weathering and erosion; how wind, water and gravity work to destroy and carry away eroded material to change the surface of the earth; how running water acts to carry away all rock materials and deposit in the world's oceans; a visit Bryce Canyon National Park in Utah to see a living laboratory of weathering and erosion; how the forces of nature work to level the surface of the land.

24 mins. | IVWE94D $32.95 DVD

24 mins. | IVWE94V $29.95 VHS

Wetlands, Marches and Swamps

This DVD explores the watery world of the wetlands. The student will learn their origins, the plant and animal life within them and why marches are important to the food chain ? and to us. The program brings the Florida Everglades into the classroom, leading students on a tour of the ?River of Grass?. The various types of wetlands, such as bogs and marshes are discussed, as are the many natural habitats they provide. Your students will gain a new appreciation for drinking water when the wetlands? role in filtering water pollution is revealed.

15 mins. | IVWCM94D $32.95 DVD

15 mins. | IVWCM94 $29.95 VHS

Destruction of the Earth's Crust

Since the formation of the earth some 4.5 billion years ago there have been many physical forces at work to wear down the surface of the earth. This video uses many diagrams and computer animation to show these many complicated processes. The processes of weathering is explored and students see first hand the results of the many forces which break down rocks.

18 mins. | IVDEC94D $32.95 DVD

18 mins. | IVDEC94V $29.95 VHS

Transporation & Deposition of Earth Materials

After rocks have been weathered or broken down into their components they are moved by wind, running water and glaciers and eventually are transported far from their source. This new video looks at the various processes by which rock is moved and later deposited. Rivers carry earth materials and eventually deposit them in lakes, deltas and oceans; glaciers erode mountain and later drop their material in the form of outwash plains, kames and eskers; wind carries material and deposits it in loess fields and dunes.

7 mins. | IVTDEM94D $32.95 DVD

7 mins. | IVTDEM94V $29.95 VHS

Geomorphology: A Study of the Shape of the Land

A new concept in learning, this 21 minute program introduces the student to the various forces which have shaped our earth. These include wind, running water, glaciers, volcanoes, temperature changes, gravity, ocean currents, faulting and folding.

The first part of the program introduces each of these concepts to the student and shows various examples. The student is then shown 50 land formations and is expected to tell the cause. After this has been done the student can rewind the DVD, turn up the sound and the narrator tells a little about each formation.

Following this section the student is asked to respond to 20 questions about landforms and their origin. The program is designed for large class instruction or for independent study. Teachers can also use the DVD as a practical examination on landforms.

21 mins. | SPL01D $32.95 DVD

21 mins. | SPL01V $29.95 VHS

A Journey to the Desert

This is an exciting 30 minute DVD on all aspects of deserts. All major deserts are located on the globe and an explanation is given as to why they exist. The desert insects and reptiles are studied as well as the large amount of different plant life. The different uses of the desert are shown with an exciting look at recreation in the desert.

30 mins. | IV103D $32.95 DVD

30 mins. | IV103V $29.95 VHS

Forces That Shape Our Earth

This program looks at the major causes of landforms on the Earth. Videotaped all over North America, this spectacular program reveals at the various forces which shape our land, namely: glaciers, volcanoes, temperature changes, gravity, the work of the wind, movement in the Earth; and rivers, lakes and oceans. This is an excellent introduction to all of these forces working together to shape the planet on which we live.

30 mins. | IV106D $32.95 DVD

30 mins. | IV106V $29.95 VHS

Waves, Coastlines and Beaches

Rugged Coastlines... Barrier Islands Splits... Tombolos... Wave Cut Terraces... Sea Stacks... Beaches. These are some of the many erosional and depositional features which are covered in this live action video program dealing with the geological processes which take place where ocean meets land. In addition, graphics and animation take you below the water?s surface to show you what is taking place just offshore under water.

18 mins. | IV107D $32.95 DVD

18 mins. | IV107V $29.95 VHS

The Formation of Natural Arches and Bridges

This program visits Arches National Park and Natural Bridges National Park in Utah. Spectacular photography of these exiting parks show geologic formation of arches and bridges including chemical processes, weathering, wind and water erosion.

11 mins. | IV113D $32.95 DVD

11 mins. | IV113V $29.95 VHS

The Work of the Wind

The Great Sand Dunes, almost 700 feet high in central Colorado, is the site for the earth science program. The student will learn how a dune is formed, the various kinds of dunes (barchan, transverse and longitudinal) as well as the origin of these sand dunes near the Sangre de Christo range.

20 mins. | IV116D $32.95 DVD

20 mins. | IV116V $29.95 VHS

Volcanoes: Our Restless Earth

The topics explored in the this program include the types of volcanoes: cinder cone, composite volcanoes, shield volcanoes, lava domes and other volcanic features such as plugs, necks and maars along with crytovolcanic structures. Types of volcanic eruptions featured are submarine volcanoes, geysers, fumaroles and hot springs. Students learn where volcanoes can be found with an explanation of Plate-Tectonic theory. Also covered are extra-terrestrial volcanoes, volcano monitoring and research; how volcanoes affect people.

45 mins. | IV123D $32.95 DVD

45 mins. | IV123V $29.95 VHS

Volcanoes

This program investigates the mechanisms of a volcano; types of volcanoes and why and how they erupt. Excellent animation explains what is taking place underground. It also introduces the student to volcanic terms such as magma, batholith, sills, dikes, cinder cones, composite cones, shield volcanoes and pahoehoe lavas.

21 mins. | IV124D $32.95 DVD

21 mins. | IV124V $29.95 VHS

The Geology of Caves and Caverns

This DVD illustrates what water can do below the earth?s surface over long periods of time. Using animated and real life sequences, the program explores some important caves and their formations. The objective is to acquaint the student with underground water, and how it dissolves limestone to form caves and caverns, stalagmites, stalactites and boxfork formations.

This program examines how water moves through pores in underground rock. If the water collects small amounts of carbon dioxide as it falls through the air it becomes slightly acidic which in turn dissolves limestone. Eventually these small openings will become enlarged to form caves and caverns. This program investigates cave deposits such as stalagmites and helectites, and shows the formation of caves.

30 mins. | IV155D $32.95 DVD

30 mins. | IV155V $29.95 VHS

Geologic Succession

The various sedimentary and igneous rocks that underlie a particular area, described in the order of their ages of deposition or intrusion constitute what is called GEOLOGICAL SUCCESSION. See how geologists determine the oldest rocks and those which have been deposited later. Learn about the role that fossils play in trying to determine succession; Also explore the concept of geologic time, unconformities, beds, formations, groups and systems.

14 mins. | IVGS95D $32.95 DVD

14 mins. | IVGS95V $29.95 VHS