Chemistry
Scientists finally know why ice is so slippery
It’s not because ice heats up and then partially melts. Rather, ice changes at the molecular level — a process scientists have finally modeled.
MS-PS2-5
Conduct an investigation and evaluate the experimental design to provide evidence that fields exist between objects exerting forces on each other even though the objects are not in contact.
More Stories in MS-PS2-5
- Earth
Scientists Say: Pole
A pole is either of two opposite ends of a molecule, magnet, battery, planet or other object.
- Earth
Explainer: How auroras light up the sky
The northern and southern lights are considered natural wonders of the world. Here’s how these and related splendid sky glows form.
- Physics
Staying grounded in space requires artificial gravity
On TV, people in space walk around like they’re on Earth. How can science give real astronauts artificial gravity? Spin right round, baby.
- Earth
Light levitation might help explore Earth’s ‘ignorosphere’
A toy called a light mill inspired researchers to invent a new way to fly. They’re using light to levitate small nanotube-coated discs.
- Environment
Batteries not included: This Game Boy look-alike doesn’t need them
Game Boy revolutionized the gaming industry. A newer version could help slow the rate of climate change.
- Physics
This high-tech sweeper is designed for super-clingy moon dust
An electron beam is the newest tool being developed to remove sticky and damaging lunar dust from surfaces.
- Materials Science
Self-powered surface may evaluate table-tennis play
Scientists at the Georgia Institute of Technology built a 'smart' surface on which to play table tennis. It can track the location, speed and direction of the ball.
- Physics
Glass beads help scientists puzzle out how baby planets grow
Researchers have mimicked the first stages of planet formation in the lab. All they needed were glass beads and a catapult.
- Health & Medicine
Therapeutic robots may soon swim within the body
Scientists are designing tiny robots that may one day do work inside the human body.
