Unit 4 oceanography

Sediments with an extraterrestrial origin are called?

• Lithogenous

• Biogenous

• Cosmogenous

• Volcanogenic

• Hydrogenous

Examine the five words and/or phrases and determine the relationship among the majority of words/phrases. Choose the one option that does not fit the pattern.

• Lithogenous

• Biogenous

• Hydrogenous

• Calcareous

• Cosmogenous

Demand for which of the following resources has skyrocketed in recent years?

• Manganese nodules and crusts

• Gas hydrates

• Sand and gravel

• Phosphorite

• Rare-earth elements

Oolites are an example of which of the following sediment types?

• Hydrogenous Sediment

• Cosmogenous Sediment

• Terrigenous Sediment

• Biogenous Sediment

• Lithogenous Sediment

In which year was manganese nodules discovered during the voyage of HMS challenger?

• 1850

• 1863

• 1872

• 1880

• 1894

Which of the following resources found in ocean sediments has the greatest economic value?

• Petroleum

• Gas hydrates

• Rare-earth elements

• Sand and gravel

• Manganese nodules and crusts

Calcium carbonate is most likely to dissolve in water with which characteristics?

• Low pressure and warmer temperatures

• Low carbon dioxide and warmer temperatures

• Lots of carbon dioxide and colder temperatures

• Lots of carbon dioxide and warmer temperatures

• Low pressure and colder temperatures

Volcanic ash is considered to be which type of marine sediment?

• Biogenous

• Cosmogenous

• Lithogenous

• Hydrogenous

Siliceous ooze is an example of which of the following sediment types?

• Biogenous Sediment

• Terrigenous Sediment

• Cosmogenous Sediment

• Hydrogenous Sediment

• Lithogenous Sediment

Which of the following contains calcium carbonate (CaCO3)?

• Diatoms

• Foraminiferans

• Glauconite

• Radiolarians

• Phosphorites