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Showing results - 61 to 70 of 135
Its in the Water: Ocean and Carbon Dioxide, The
07:02

Its in the Water: Ocean and Carbon Dioxide, The

The exchange of gasses, like carbon dioxide, is a critical aspect of the ongoing and dynamic interaction between the ocean and the atmosphere
Subject: ocean
Transcript: [narrator:] the exchange of gasses, like carbon dioxide, is a critical aspect of the ongoing and dynamic interaction between the ocean and the

Life Goes On: Vertebrates: Marine and Terrestrial
04:43

Life Goes On: Vertebrates: Marine and Terrestrial

invertebrates do not. There are far more invertebrates than vertebrates in the ocean, but the vertebrates-which include fishes, reptiles, birds and whales
Subject: ocean
Transcript: greater commercial value than any other ocean creatures. and their brains are large and active. marine biologists informally classify marine animals into

Its in the Water: Water's Chemical Structure
04:09

Its in the Water: Water's Chemical Structure

Water's unique chemical structure gives it much higher freezing and boiling points than would otherwise be the case. This has a great deal to do with Earth being as hospitable to life as it is. That same chemical structure also gives water exception...
Subject: ocean
Transcript: required to maintain the very basic process Of biology on the earth, photosynthesis, Can be transported from one part of the ocean to another, And this

Its in the Water: Thermohaline Circulation
01:11

Its in the Water: Thermohaline Circulation

Thermohaline circulation is driven by differences in temperature and salinity, as opposed to circulation driven by wind. Understanding patterns of water movement may be crucial to better understanding global climate and climate change.
Subject: ocean
Transcript: around, Or it can be differences in density. All these different types Of water have different origins and, Especially in the southern ocean, It becomes

Its in the Water: Salinity, Density, and Temperature
03:51

Its in the Water: Salinity, Density, and Temperature

seawater. And this, in turn, greatly affects ocean structure and circulation.
Subject: ocean
Transcript: density of sea water. and this, in turn, greatly affects ocean structure and circulation. Density is measured in terms of mass per unit volume, And the

Its in the Water: Seawater, Freshwater and Salt
02:37

Its in the Water: Seawater, Freshwater and Salt

While both seawater and freshwater contain a wide array of minerals and other constituents, the amount of salt in seawater is generally greater than in any other large body of standing water. There are a number of ways in which salt is added to seaw...
Subject: ocean
Transcript: generally greater than in any other large body of standing water. [coale:] the oceans are billions of years old. And, if you can imagine the water cycle

Life Goes On: Fishes: Sensory Mechanisms
01:06

Life Goes On: Fishes: Sensory Mechanisms

Fishes survive in the ocean in part due to their sensory mechanisms. They utilize both sight and smell in this regard, as well as what's called a
Subject: ocean
Transcript: discussing how fishes survive In the ocean is their sensory mechanisms. Vision comes to mind. Smell or chemoreception comes to mind. But fishes have a fairly

What You Don't Know...: Ocean Pollution
03:19

What You Don't Know...: Ocean Pollution

The ocean has historically been treated as a vast dumping ground. For example, the beaches south of San Diego are closed during much of the year
Subject: ocean
Transcript: [goldberg:] the ocean has historically been treated As so vast that we can do anything to it And it doesn't matter. Cities have pumped vast

The Water Planet: Water: Earth's Distinguishing Characteristic
03:49

The Water Planet: Water: Earth's Distinguishing Characteristic

The third planet out from the sun, Earth is unique in many ways. But perhaps the most significant is that seventy percent of Earth's surface is covered with water.
Subject: ocean
Transcript: have the highest waterfalls, we have the largest lakes, The largest oceans, the solar system record for rainfall. In cherrapunji, india, in 1891, 26 and

Treasure Trove: Commercial Uses of Sediment
03:00

Treasure Trove: Commercial Uses of Sediment

Marine sediments are enormously important economically. Gravel and sand are obtained from the ocean for use as construction materials. In addition to
Subject: ocean
Transcript: [yett:] marine sediments are enormously Important economically. There are certain kinds of deposits that have been found In ocean sediments that are