Grade Level: 6-8,
9-12
Learn about volcanic ash and watch a visualization of the Calbuco volcano to see how ash travels around the world.
Learn about volcanic ash and watch a visualization of the Calbuco volcano to see how ash travels around the world.
For over 20 years, satellite instruments have measured the sea surface height of our ever-changing oceans. This video of images shows the complicated patterns of rising and falling ocean levels across the globe from 1993 to 2015.