Earth
Scientists Say: Fjord
These dramatic, steep-sided sea inlets form when glaciers carve deep channels from the terrain.
HS-ESS2-5
Plan and conduct an investigation of the properties of water and its effects on Earth materials and surface processes.
More Stories in HS-ESS2-5
- Earth
Let’s learn about rivers
Rivers vary a lot in size and terrain, but all share a few basic features.
- Environment
Watch out: Hail can get really big!
New data from hailstones suggest most of these icy chunks may not form the way scientists long thought.
- Planets
Mars’ rust suggests it was once wet — and its seas frigid
Mars may once have held enough water to fill oceans and form coastlines. And the planet’s red dust hints that its seas would have been quite frigid.
- Earth
Scientists Say: Frost Quake
When wet soil abruptly freezes, it creates high pressure underground. When the pressure releases, it can trigger a mini-earthquake called a frost quake.
- Earth
Many natural underground stores of freshwater are shrinking
A lot of these aquifers are quickly disappearing due to climate change and overuse. Fortunately, there is growth in some of the world’s major aquifers.
- Physics
Before the ancient Egyptians, nature may have carved sphinxes
Steady ‘winds’ can carve clay blobs into lion-shaped landforms called yardangs, a new study suggests. One such yardang may have inspired the Great Sphinx of Giza.
- Earth
A natural ‘cathedral’ lurks deep under Antarctic ice
By drilling into this cavern, scientists have opened a window into the mysterious world of hidden lakes, their occupants — and rivers that run uphill.
- Earth
Under the ice, a hidden lake hints at its origin — and coming end
Lake Mercer may serve as a model for better understanding the birth and life of Antarctica’s hundreds of subglacial lakes.
- Earth
Analyze This: Salt may quash lightning over the sea
Bits of airborne salt may help raindrops form, removing water from clouds before it can freeze as part of the process that makes lightning.
