Jacques Cousteau: Bringing the Ocean to Light
For most of human history, the deep ocean was a hidden kingdom. People could stand on a sunny beach or sail across rolling waves, but they could only imagine what lay beneath the surface. Looking down into the sea from above was like staring into a dark, shadowy mirror. While creatures on land moved freely through warm sunlight and fresh air, the marine world remained cold, silent, and mysterious.
Jacques-Yves Cousteau, born in France on June 11, 1910, wanted to change how people saw that hidden world. Cousteau was fascinated by the sea, but he faced a major obstacle. Humans are land animals. Our eyes are adapted to focus light through the air. Beneath the waves, water bends light differently, making human vision blurry and dim. Even worse, normal sunlight fades quickly as you travel deeper into the water. Red and yellow wavelengths disappear first, leaving behind only deep shades of blue and gray.
- marine:
- Relating to or found in the sea or ocean.
- obstacle:
- Something that stands in the way or makes progress difficult.
- wavelengths:
- The different patterns of light energy that determine what colors we see.
- pressure:
- The continuous physical force or weight pressing against an object.
- housings:
- Sturdy outer casings designed to cover and protect delicate equipment.
- trenches:
- Deep, steep-sided valleys on the ocean floor.
- astonished:
- Filled with great surprise or wonder.
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Preview questions from this passageShowHide
- 1Where and when was Jacques-Yves Cousteau born?
- 2Why does human vision become blurry and dim underwater according to the passage?
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About this biography passage for 4th Grade
“Jacques Cousteau: Bringing the Ocean to Light” is a biography reading passage about Jacques Cousteau and Underwater Exploration, written for 4th Grade. It takes about 3 minutes to read (451 words) and comes with an interactive quiz and a printable worksheet with comprehension questions and an answer key.