Segments in this Video

Importance of Metals (02:13)

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The great majority of elements known to humankind are metals. Metals are so important to our society, that history has been split into the Stone Age, the Bronze Age, and the Iron Age.

History (02:48)

The first metals that humans used were copper and gold. The Egyptians developed bronze by mixing copper with tin. Ancient civilizations had access to iron, though it was rare until the Hittites learned to extract it from ore.

Characteristics of Metals (02:01)

Metals generally come from mineral ore. They are good conductors of heat and electricity; they are malleable and ductile. Pure metals are mixed with other materials to make alloys that are more durable.

Iron (03:11)

The Earth’s core mainly consists of iron and nickel; its movement creates the planet’s magnetic field. Iron represents 95% of worldwide metal production, and is vital to oxygenating our cells.

Aluminum (01:35)

Aluminum is the most abundant metal in Earth’s crust. In 1886, Charles Martin Hall and Paul Héroult discovered methods for extracting aluminum from bauxite.

Metal in Our Lives (03:11)

The need for metal increased exponentially during the Industrial Revolution and with the spread of machines. Its use is so varied that it has become essential to modern society.

Summary (02:37)

This segment reviews the concepts of metals discussed in this video.

Credits: Metals (02:16)

Credits: Metals

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Metals

Part of the Series : Just the Facts Physics Facts Series
3-Year Streaming Price: $99.95

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Description

Metals have had such an impact on civilization that we name some eras for the discovery of specific metals: the Bronze Age and the Iron Age. In this program, learn about the characteristic and properties of metals, as well as the appearance of metals throughout history. We’ll explore prehistory; metals and tools; the first metals to be discovered; advantages of metal as compared to stone, wood, and bone; pure metals; alloys; heavy metals; iron; aluminum; and bronze. Most importantly, we’ll explore how metals have impacted technology, machines, engines, vehicles, and the survival of our species.

Length: 22 minutes

Item#: FMK155089

Copyright date: ©2013

Closed Captioned

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