Quiz on 'Dark Oxygen' on Ocean Floor

What is the recent discovery that may change our understanding of Earth's origins of life?

• Underwater plants

• Deep-sea algae

• Dark oxygen

• Submarine volcanoes

Tags

NGSS.MS-ESS2-1

Polymetallic nodules can be found (a)  

• In deserts
• On mountain tops
• At the bottom of the ocean
• In rainforests

Tags

NGSS.MS-ESS3-1

What elements do polymetallic nodules contain?

• Iron and nickel

• Zinc and lead

• Gold and silver

• Cobalt, copper, lithium, and manganese

Tags

NGSS.MS-ESS3-1

How deep can polymetallic nodules be found below the ocean's surface?

• 5,000 feet

• 10,000 feet

• 15,000 feet

• 20,000 feet

Match the following processes with their descriptions:

• A process by which green plants make their own food using sunlight

• Filtration

• A process of separating solids from liquids

• Combustion

• A process of using electricity to cause a chemical change

• Photosynthesis

• A process of burning something

• Electrolysis

Tags

NGSS.MS-LS1-6

What did Sweetman initially think about the strange oxygen readings?

• They were normal

• They were caused by fish

• They were due to sunlight

• The sensors were faulty

The term used to describe the natural formations that generate oxygen without light is (a)  

• Hydro plants
• Wind turbines
• Solar cells
• Geobatteries

What is a potential consequence of mining polymetallic nodules?

• Creation of dead zones

• Cleaner ocean water

• Increased fish population

• More sunlight reaching the ocean floor

Tags

NGSS.MS-ESS3-4

NGSS.MS-LS2-4

What did marine biologists find in areas mined during the 1980s?

• New species of fish

• More algae growth

• Total dead zones

• Increased biodiversity

Tags

NGSS.MS-LS2-1

What is the main concern about mining polymetallic nodules?

• It will deplete the oxygen source for deep-sea life

• It will reduce the amount of sunlight

• It will increase ocean temperatures

• It will cause more earthquakes

Tags

NGSS.MS-ESS3-4

NGSS.MS-LS2-4