Oceans and Climate Change Impact

The video discusses the critical role oceans play in regulating Earth's climate by absorbing excess heat and carbon dioxide. It highlights the increasing frequency of marine heat waves due to rising global temperatures, which stress marine life and disrupt ecosystems. The warming oceans contribute to more intense hurricanes and rising sea levels through thermal expansion. These changes threaten coastal communities, tourism, and jobs. The video emphasizes the importance of collective action to mitigate climate change and protect ocean health.

What percentage of the Earth's surface is covered by ocean waters?

• 90%

• 50%

• 85%

• 71%

What percentage of excess heat is stored below the ocean surface?

• 70%

• 90%

• 50%

• 10%

How much more common have marine heat waves become due to climate change?

• 20 times

• 5 times

• 10 times

• 15 times

What is a marine heat wave?

• A period of unusually cold water temperatures

• A period of water temperature above the 90th percentile for 3 to 5 days

• A period of increased ocean salinity

• A period of decreased ocean currents

What ecological role do coral reefs play?

• They decrease ocean temperatures

• They act as a natural defense against storm surges

• They increase ocean salinity

• They increase ocean currents

What is one consequence of coral bleaching?

• Decreased ocean salinity

• Increased ocean currents

• Damage to coral habitats

• Increased fish population

How do warm ocean waters affect hurricanes?

• They weaken hurricanes

• They have no effect on hurricanes

• They decrease hurricane frequency

• They strengthen hurricanes

What process contributes to sea level rise as ocean waters warm?

• Thermal expansion

• Ocean contraction

• Salinity increase

• Ocean evaporation

What role do oceans play in climate regulation?

• They decrease atmospheric moisture

• They are a sink for carbon dioxide and heat

• They are a source of carbon dioxide

• They increase atmospheric temperatures

What is necessary to mitigate the impacts of climate change on oceans?

• Decreased ocean usage

• Increased ocean exploration

• Collective global efforts

• Individual efforts alone