How do we determine the age of the water?
How do we determine the age of the water? Carbon-14 or radiocarbon is the most common method used to determine groundwater ages between 1,000 and 30,000 years.
Why is the ocean blue?
The ocean is blue because water absorbs colors in the red part of the light spectrum. Like a filter, this leaves behind colors in the blue part of the light spectrum for us to see. The ocean may also take on green, red, or other hues as light bounces off of floating sediments and particles in the water.