There are two weeks left to this quarter, so let’s finish strong! Note: On Wednesday we will have significantly reduced time together due to the special bell schedule associated with the administration of the PSAT.
This Week in Physics
We will finish assignment 1 together in class, and then on the day after we finish that assignment we will take a quiz over everything from goal set 1 except for vector resolution. Also for the day after we finish assignment 1, please take notes on PODCAST 2: Vector Resolution. We will do a short assignment (assignment 2) followed by a quiz on the day after that assignment is due. When announced please take notes on PODCAST 3: A Conceptual Look at Projectile Motion. Reality check: With all of the challenges to our schedule in the past few weeks due to testing, assemblies, and field trips, it is highly unlikely that we will have our unit 2 test before the end of the quarter. Therefore please be sure to study well for the quizzes described above.
Cool Science of the Week
Recently one of our classes was talking about nature’s toughest critter, the 1mm long tardigrade. Fun fact: It can be almost completely dehydrated so that it is, in essence, a non-functioning life form, yet it can later be re-hydrated, at which time it reassembles itself and goes on with living! Fun fact: It can go into outerspace and not only survive completely exposed to the low temperatures, vacuum, and extreme radiation of space living, but it can even lay eggs in outerspace…and the eggs hatch, and the babies live! Fun fact: Some research on the tardigrade genome map suggest that up to 17% of its DNA is foreign, meaning it does not match any potential evolutionary ancestors! All of this has led some true believers to conclude that tardigrades are an alien species brought to Earth on a meteor. Admittedly they certainly look unlike any other critter, but truth or fiction? You decide! 🙂
Animation credit: Science Alert, November 25, 2015