Indirect observation

Significant surface features of the Earth

Global surface relief - GEBCO map

Larger image  [32.5 MB]


Global surface relief - NOAA map
Easiest to see mountain ranges under the oceans (oceanic)

Larger image  [6.3 MB]


Mars surface relief - NASA map

Larger image  [3.5 MB]


Global surface relief - GLOBE map
Easiest to see mountain ranges on land (terrestrial)

Larger image  [3.5 MB]



Questions for thought
  1. What is the

  2. First-order - Continents vs. ocean. Continents are defined by their elevation and rock type, not the relatively coincidental shoreline.