04.23.2020 - Thursday - Science -
Remember to define CAPITALIZED terms with which you are unfamiliar. (Left side of notes.)
- Current Events: Please check out CNN 10 and get down two facts from the piece on how the environment has changes since the Covid 19 shelter-in-place orders. CNN 10 link … https://www.cnn.com/cnn10
- … (your first fact here.)
- … (your second fact here.)
II. We’ve been study CYCLES in nature and some of the cycles that occur in life, the Earth, and even the universe. Some of the examples are …
A. The rock cycle.
B. The cell cycle.
C. Te cycle of the stars forming, creating heavier elements, going supernova, and the creation of new solar systems.
III. There are many other cycles. Here’s your first challenge today. Write down TWO (2) more cycles that you can think of that are not, yet, on our list of cycles we’ve studied.
A. (First cycle here.)
B. (Next cycle here.)
IV. Math tends to be taught in a step-by-step, sequential way. Each skill builds on the last that was learned. While science does to, in science there is, often, not a clear “start” - instead, we jump in to a place on one of our cycles and start learning how it fits in the a bigger picture. That’s what we’ve been doing by learning a bit about atoms and molecules - and where they come from. Now we move into what happens when those atoms and molecules get together into the molecules that have the characteristics of LIFE.
V. DNA - The is one of the longest molecules known that carries GENETIC INFORMATION from one generation to the next. It’s a molecule, inside cells, that has the ability to make a copy of itself!
VI. The ATOMS that get together to make DNA are mainly Carbon, Nitrogen, Oxygen, and Hydrogen.
VII. How do we know the structure of DNA and how can we tell that these atoms are scattered all over the universe?
A. That’s where our study of RADIATION (LIGHT) comes in!
VIII. There are all kinds of radiation that we cannot see with our eyes. Some examples are …
IX. Some atoms, like Carbon - 14, or other RADIOACTIVE elements, release RADIATION as they, naturally, “fall apart.” When an atom breaks apart, we call this RADIOACTIVE DECAY. It happens in nature constantly.
X. This RADIOACTIVE DECAY releases a tiny amount of HEAT. That is one reason the inside of our Earth stays so hot!