Earth
Scientists Say: Cave Popcorn
This type of cave formation can occur as glossy, soaplike bubbles or as a bristly, cauliflower-like clusters.
HS-ESS2-1
Develop a model to illustrate how Earth's internal and surface processes operate at different spatial and temporal scales to form continental and ocean-floor features.
More Stories in HS-ESS2-1
- Archaeology
Analyze This: Stonehenge’s ‘Altar Stone’ has mysterious origins
After a century of searching for the source of the Altar Stone, scientists have yet to figure out where ancient people got the rock.
- Earth
Scientists Say: Tectonic Plate
Tectonic plates are giant slabs of rock that make up Earth’s outer layer.
- 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
Scientists Say: Seismology
Seismology is the branch of science focused on seismic waves — vibrations that run through or around Earth.
- Physics
Explainer: What is friction?
The force of friction always acts to slow things down. It depends on just two factors: the surfaces and how hard they press together.
- Earth
Uplifting Antarctic shores point to accelerating loss of glaciers
It appears the Pine Island and “Doomsday” Thwaites glaciers are losing ice — and shrinking faster — than at any time in the past 5,500 years.
- Chemistry
Let’s learn about diamond
Diamond is born under extreme heat and pressure inside Earth and elsewhere in the universe.
- Earth
Scientists Say: Fault
A fault is a crack in Earth’s crust where pieces of rock scrape past each other.
- Earth
Tiny gemstones show when Earth’s crust first started moving
Chemical hints observed in zircons suggest when the important process of plate tectonics first took off.
