03.27.2020 - Friday -
Science Notes and reading - Left side of science notebooks -
- Current Events: Two notes on Nicaragua.
- (link to CNN 10) https://www.cnn.com/cnn10
II. Today’s “One minute science” video from home.
A. (link). https://www.youtube.com/watch?v=dtd4-R7vnFo
III. Life and the carbon and rock cycles:
A. We’ve seen that the rocks and carbon cycle interact to make an environment on this planet that can support life. When we had a unit on ENERGY we learned about heat transfer.
1. Conduction: Heat transfer when things are in contact.
2. Convection: Circular flow in a liquid that transfers heat. Hot fluid rises while relatively cold fluid sinks.
3. Radiation: Electromagnetic waves. We studied how, even though our sun in almost 100 million miles away the energy from hydrogen fusion reacher Earth by RADIATION.
IV. On yesterday’s “One minute science” we tapped glasses with a fork and noticed there was a different pitch to each glass. The glasses were the same size but were filled with varying amounts of water. The different frequencies of sound are a little like the different frequencies of light that reach Earth. There are many more frequencies than our human eyes can actually see!
A. Plants use colors other than green when carrying out PHOTOSYNTHESIS. The light energy helps plants, and other photosynthesizing organisms, convert water and carbon dioxide into sugar and oxygen.
V. If it wasn’t for the ROCK CYCLE, powered by CONVECTION CURRENTS inside our planet, there’s would be no new land for plants, animals, fungi, or bacteria to inhabit. But, as we’ve seen by checking out pictures of places like Yosemite, bare rock can be made habitable by lichens and other processes that break down the rock and make soil.
VI. Early life that photosynthesized didn’t have to “worry” too much about water as they were living in an ocean or lake. As life moved on land, however, obtaining water became a problem.
VII. Based on your observations of the tree (you sketched) and the celery stalk (from today’s One-minute science video) how do you think life ADAPTED to land?
A. In other words, how to trees and plants get - and hold on to - WATER?
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