Jordan Kivitz retweeted
Gravity propagates at the speed of light. So if the sun suddenly exploded or disappeared, we would continue orbiting it for 8 minutes even though it's no longer there.
Jordan Kivitz retweeted
Total living biomass on Earth is 550 billion metric tons. Humans account for 0.01% of that.
There are 10^21 living organisms for every 1 human. Earth is teeming with life.
PS: 90% of life by biomass is on land, only 10% in the ocean.
Jordan Kivitz retweeted
You wouldn’t believe what I just saw.
More images and video to come...
#MarsHelicopter
go.nasa.gov/ingenuity
Jordan Kivitz retweeted
NoVA teachers, you're invited! Join us for the 2nd CSTA NoVA Coded Camp, Thurs. 4/22 from 6:30-8:00 pm via Zoom. Get/share ideas w/ K-12 #CompSci Ts at this edcamp-style virtual PD event. Session topics for ES-MS-HS! Signups: bit.ly/CodedCamp4-22 @csteachersorg @codevirginia
Jordan Kivitz retweeted
"What matters most is how well you walk through the fire." - Charles Bukowski
Jordan Kivitz retweeted
U.S. Mint Introduces New Seven-Cent Coin To Bolster Citizens’ Math Skills bit.ly/3u6CfK2
Jordan Kivitz retweeted
First 3D Printed House for Sale on Long Island | NBC New York youtu.be/vwjk7xsgYbo via @YouTube @mrjonesteaches @antrimtech @BitsNBolts @Rosielivenlearn @APS_STEM
Jordan Kivitz retweeted
What an awesome field trip to the Grand Canyon with
@MsSplan and our amazing 5th graders. What a great way to study Weathering, Erosion, and Deposition... @AbingdonGIFT @APSVirginia @APSscience
Jordan Kivitz retweeted
Top speed of various animals:
75 mph - Cheetah
50 mph - Lion
35 mph - Grizzly bear
30 mph - Domestic cat
28 mph - Humans
We humans are a lucky, inventive bunch.
Jordan Kivitz retweeted
“I can’t trust science because science has been wrong” <- That’s ... actually how science works. It gets better over time. And it’ll continue getting better with the hard work of scientists and experts. That’s THE POINT of science. That is all.
Jordan Kivitz retweeted
Most people ignore opportunities because they see only danger. Entrepreneurs ignore danger because they see only opportunities.
Jordan Kivitz retweeted
"Science can amuse and fascinate us all, but it is engineering that changes the world." - Isaac Asimov
Jordan Kivitz retweeted
In 1678, Newton published in Principia a demonstration that the planets' orbits are ellipses (r₁+r₂=c) with the Sun at one of the foci. 7 years earlier, Cassini proposed that the orbits follow the curve with r₁r₂=c².
Jordan Kivitz retweeted
In remembrance of the precious lives taken on 12/14/12. #NeverForget
#SandyHookPromise was founded and led by several family members whose loved ones were killed at Sandy Hook Elementary School. Our mission is to #EndGunViolence and #ProtectOurKids.
