National Geographic
National Geographic: Encyclopedia: Ocean Trench
Comprehensive information about deep-ocean trenches. Includes maps, a video [1:29], and a vocabulary list.
Extreme Science
Extreme Science: Challenger Deep
A short description of the world's deepest ocean trench. Includes diagram and map.
Read Works
Read Works: A Club for Explorers
[Free Registration/Login Required] An informational text about scientists who explore the ocean. A question sheet is available to help students build skills in reading comprehension.
Curated OER
Xenotran.com
A short description of the world's deepest ocean trench. Includes diagram and map.