Understanding Sea Level Rise

The video explains the causes and measurement of sea level rise. Local sea level is measured at specific locations, while NASA measures global sea level from space. The global sea level has risen due to Earth's warming, causing glaciers to melt and water to expand. This rise impacts coastal communities. NASA uses satellites to monitor these changes.

What is the term used to describe the average height of the ocean in a specific location?

• Global sea level

• Local sea level

• Tidal average

• Oceanic baseline

How does NASA measure the average sea level of the entire ocean?

• With underwater sensors

• By measuring waves

• Using coastal tide gauges

• From space

What has been the observed change in global sea level over the past century?

• It has increased by 7 to 8 inches

• It has remained the same

• It has increased by 1 to 2 inches

• It has decreased by 7 to 8 inches

What is one major reason for the rise in sea levels?

• Increased volcanic activity

• Decreased ocean salinity

• Melting of glaciers and ice sheets

• Increased rainfall

How does warming of the ocean contribute to rising sea levels?

• It leads to more rainfall

• It increases ocean salinity

• It causes more evaporation

• Water expands as it warms

What is a potential impact of rising sea levels on human communities?

• Increased agricultural land

• More freshwater availability

• Flooding in coastal areas

• Decreased fish populations

Which satellites does NASA use to measure global sea level?

• Voyager

• Galileo

• Jason

• Hubble

How long does it take for NASA's satellites to complete one sea level measurement?

• 1 day

• 1 year

• 10 days

• 1 month

What happens after NASA's satellites complete a sea level measurement?

• They stop measuring

• They start measuring all over again

• They measure atmospheric pressure

• They move to a different planet

Why is it important to monitor sea level rise?

• To understand ocean currents

• To predict weather patterns

• To measure fish populations

• To assess the impact on coastal communities