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13 results for “microplastics in the ocean”
- The Perpetually Curious! › Canonical › Planet EarthArticle
🌊 Where the Salt Stays: Why the Ocean Is Salty but Rivers and Most Lakes Are Fresh
From section: 🌊 The ocean is where many water journeys meetRivers carry dissolved ions from the continents into the sea. Groundwater discharges along coasts, windblown material settles onto the ocean surface, and seawater circulates through hot rock beneath the seafloor, where chemical reactions can add some substances and remove others. …
- The Perpetually Curious! › Canonical › Planet EarthArticle
🌐 How SONAR Uses Sound to Map the Hidden Ocean Depths
From section: 🐋 Listening to life in the oceanThis biological perspective connects back to the earlier discussion of sound propagation. The same physical principles that guide SONAR pulses also shape how animal sounds travel through the ocean, which provides a natural path toward understanding how SONAR technology developed over time.
- The Perpetually Curious! › Archives › Planet EarthArticle
🌊 Harbor Wave, Ocean Pulse: The Science of Tsunamis from Seafloor to Shore
Some ocean hazards announce themselves with wind, foam, and a rising sky. A tsunami often does not. Far from shore, it may pass as a long, subtle lift, more like a slow breath than a breaking wave. Even the word “wave” can mislead, because a tsunami is not simply the surface…
- The Perpetually Curious! › Canonical › Planet EarthArticle
🌏 When the Pacific Breathes Warm: El Niño and the Changing Rhythms of Rain
How can a change in the tropical Pacific alter the prospects of rain thousands of miles away? El Niño begins when unusually warm surface waters spread across the central and eastern equatorial Pacific and the ocean and atmosphere reorganize together.
- The Perpetually Curious! › Canonical › Planet EarthArticle
🌌 Sky in Slow Layers: Understanding Earth’s Atmospheric Structure
From section: Did You Know🌊 Earth’s atmosphere experiences global-scale tides as well as smaller gravity waves. These are vast waves moving through the air, not movements of ocean water. …
- The Perpetually Curious! › Canonical › Planet EarthArticle
🏔️ Mount Kailash: A Summit Where Water, Story, and Sky Converge
From section: 💡 Did you know?🏔 The wider Himalayan and Tibetan Plateau region preserves evidence of the ancient Tethys Ocean and later continental collision, while the Kailash region records complex uplift, sedimentation, faulting, and erosion.
- The Perpetually Curious! › Canonical › Planet EarthArticle
🌊 Niagara Falls, Where Thundering Waters Shape Time
From section: 🧊 From ice and stone: How Niagara Falls was born… As the climate warmed approximately 12,500 years ago, the retreating ice carved basins that filled to become the Great Lakes. Meltwater from these lakes sought pathways toward the ocean, and one of those pathways became the Niagara River. …
- The Perpetually Curious! › Canonical › Planet EarthArticle
🌊 Where the Waves Leave Their Footprints: Why Beaches Carry Sand
From section: 🌬️ The Coastal Conveyor BeltReaders who wish to understand how extreme ocean waves differ from the everyday wave patterns that shape beaches may find additional insight in the behavior of tsunamis, where ocean energy reaches the shore under exceptional circumstances.
- The Perpetually Curious! › Archives › Planet EarthArticle
🌊 The Great Lakes: North America's Temporary Inland Seas
This blend will continue eastward, taking years to centuries more to reach the Atlantic Ocean.
- The Perpetually Curious! › Archives › Planet EarthArticle
❄️ Antarctica: Southernmost Continent’s Frozen Symphony of Silence and Light
From section: ❓ FAQWhat are the key differences between the Arctic and Antarctic? The Arctic is an ocean surrounded by continents, while Antarctica is a continent surrounded by oceans. Arctic sea ice averages 6-10 feet (2-3 meters) thick versus Antarctica's miles-thick ice sheet. …
