- A sinuous valley.
- Widespread lowlands.
Van Allen, James A.
- American physicist. Van Allen discovered the Earth's radiation belts, which now bear his name, with an instrument aboard the first successful American satellite, Explorer 1.
- The opening in the crust through which volcanic material erupts.
Verne, Jules 1828-1905
- French writer. Verne is considered to be the founder of modern
science fiction. His novels include "Journey to the Center of the
Earth" and "From the Earth to the Moon".
- Compounds with low melting temperatures, such as
hydrogen, helium, water, ammonia, carbon dioxide and methane.
- (1) A vent in the planetary surface through which magma and associated
gases and ash erupt. (2) The form or structure produced by the erupted