Hydrothermal Vents and Deep Sea Discoveries

In 1977, a deep-sea expedition discovered hydrothermal vents on the ocean floor, revealing a unique ecosystem thriving without sunlight. These vents, spewing mineral-rich hot water, support life through chemosynthesis, a process where bacteria convert chemicals into energy. This discovery challenged traditional views on life's origins, suggesting that life could exist in extreme environments. The vents are part of a global mid-ocean ridge system, and their study has implications for understanding life's beginnings on Earth and the potential for life on other planets, such as Jupiter's moon Europa.

What was the primary mission of the deep-sea submarine in 1977?

• To capture images of marine life

• To investigate hydrothermal activity

• To explore the Galapagos Islands

• To measure ocean salinity

What was the temperature around the hydrothermal vents?

• 80°F

• 70°F

• 60°F

• 50°F

What was unusual about the tube worms discovered near the vents?

• They had eyes

• They were transparent

• They bled humanlike blood

• They were bioluminescent

What did scientists find inside the clams near the vents?

• Coral

• Pearls

• Hydrogen sulfur

• Sand

What process allows bacteria near hydrothermal vents to produce energy?

• Respiration

• Fermentation

• Chemosynthesis

• Photosynthesis

What is the significance of the bacterium found in the clams?

• It is bioluminescent

• It is harmful to humans

• It can photosynthesize in the dark

• It is a new species

What is the largest feature on Earth related to hydrothermal vents?

• The mid-ocean ridge

• The Mariana Trench

• The Great Barrier Reef

• The Pacific Ocean

What did the discovery of hydrothermal vents challenge?

• The temperature of ocean water

• The size of the Pacific Ocean

• The role of sunlight in sustaining life

• The existence of deep-sea life

Where do scientists now think life on Earth might have originated?

• In the ocean surface

• In the atmosphere

• In hydrothermal vents

• In the polar ice caps

Which moon of Jupiter is being studied for potential life due to its underwater volcanoes?

• Callisto

• Io

• Europa

• Ganymede