8.E.1.2 -- Earth's Oceans
8.E.1.2 -- Earth's Oceans
Summarize evidence that Earth’s oceans are a reservoir of nutrients, minerals, dissolved gases, and life forms:
Estuaries Marine ecosystems Upwelling
Behavior of gases/marine environment Sustainability of marine resources Deep ocean technology and understandings gained
Students need to know
Students need to know
- ... that the ocean is a dynamic system in which many chemical, biological, and physical changes are taking place.
- ... that estuaries are areas where fresh and saltwater mix, producing variations in salinity and high biological activity.
- ... that from the seashore to the deepest depths, oceans are home to some of the most diverse life on Earth.
- ... in the ocean there are many individual food chains overlapping and intersecting to form complex food webs.
- ... how winds have a powerful effect on the oceans and are an important force in creating ocean currents.
- ... that seawater has many different gases dissolved in it, especially nitrogen, oxygen and carbon dioxide.
- ... why carbon dioxide is one of the most important gases that dissolve in the ocean.
- ... that the ocean is one of Earth's most valuable natural resources.
- ... hat the deep ocean has long been of interest to scientists.
Ocean Resources
Ocean Resources