MS-PS2-2
Plan an investigation to provide evidence that the change in an object's motion depends on the sum of the forces on the object and the mass of the object.
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Tech
A new device uses atoms’ quantum weirdness to peer underground
Quantum sensors like this one could monitor magma beneath volcanoes or uncover archaeological artifacts.
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Physics
Explainer: Gravity and microgravity
The force of gravity holds us on the ground, keeps planets in orbit and extends throughout space. A very weak gravitational pull is called microgravity.
By Trisha Muro -
Earth
Volcanic avalanches may be more destructive than previously thought
Pressures within these pyroclastic flows may be as much as three times as high as observations had suggested.
By Nikk Ogasa -
Physics
Here’s why ducklings swim in a row behind mom
Baby ducks save energy by surfing their mother’s waves, but only if they do it in an orderly line.
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Physics
Scientists Say: Mass
Mass shows how much an object resists speeding up or slowing down when force is applied — a measure of how much matter is in it.
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Tech
Mantis shrimp inspires somersaults of new soft robot
Its rolling acrobatics allow this robot to move especially swiftly — much as a fictional new Disney character can.
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Physics
Why big nuts always rise to the top
X-rays scans of a box of mixed nuts now reveal why large Brazil nuts rise to the top.
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Physics
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.
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Physics
Scientists Say: Acceleration
Acceleration is a change in velocity. That could mean a change in speed or in direction.
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Physics
Butterflies use jet propulsion for quick getaways
If you have ever tried to catch a resting butterfly, you know they are surprisingly difficult to nab. A new study helps explain why.
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Physics
Researchers reveal the secret to the perfect football throw
The tip of a spiraling football follows the ball’s path. If you know a thing or two about gyroscopes, this is not what you’d expect.
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Physics
How physics lets a toy boat float upside down
Buoyancy’s upward force keeps objects afloat even in unusual conditions.