As a tie in to the lessons presented Umbi cut out a black line master of The Clock of Eras and colored in the Cosmic Era as well as labeled it, he also completed some drawings giving his interpretation of the lesson presented yesterday and the events involved during this period of time, including the burst of energy, particles. and the eruption of volcanoes. It is worth noting that while we did not sit down and "do vocabulary" we did manage to introduce, particles, eruption, eras, formation, solar flares, protons, nuetrons and electrons, spiral galaxies ( evidently these are the only kind of galaxies rich in the metals we need to survive)... So yes! we didn't do vocabulary. We are a radical bunch! The more I do this the more I realize how much learning occurs in spite of teaching ;-)
I followed up with Telling time in the Math Mammoth series ( funny how it just happened to be where we left off during summer). And math wrap-ups.
Umbi worked on his own doing random spelling, this was not part of any work I had set out to present today, it was just one of those happy moments that homeschool mom's pray for and are at times graced with. Below is a sample of today's presentation. Enjoy
Presentation
A. Formative Era (Also called Azoic)
The first four hours are colored black. During this time, the Earth transformed itself from a mass of flaming gases into a planet with a cool, hard crust. The sun and earth were more alike then, but the sun did not cool like the earth. Its great size and heat brought about changes within our star, making light and heat stream out in all directions.
The Earth, much smaller, did not give off light. As it cooled, however, hot gases rose and fell on its surface. This was the cosmic dance.
Slowly the crust was formed, but it was very thin. Inside, the earth still held flaming gases, which needed space to expand. Where weak spots in the crust broke open, the gases escaped and volcanoes were formed. The volcanoes we have today are very few compared to the number then.
They threw out such ash and smoke that a thick cloud formed and the earth grew dark and colder. At some point, we don't know when, water was formed in these clouds and rain began to fall.
At first this rain turned to steam and rose again, but there was so much water that it finally cooled the earth and stayed. The valleys and lower parts of the Earth were covered. Afterwards, the clouds thinned and the sun began to shine.
On our Clock, we have now come to 4:00, and this long era is finished. How many years have passed? Even today, though the Earth's crust has thickened, it is still thin compared to the inside layers of our planet. There is still much heat and some of those layers are not solid.
In cooling, the earth's crust formed huge plates, which rode upon the surface and rubbed against one another. Where they collided, great mountains arose and sank, earthquakes spread out, or volcanoes brought forth matter kept hot by pressure. This action continues today.
Slowly the crust was formed, but it was very thin. Inside, the earth still held flaming gases, which needed space to expand. Where weak spots in the crust broke open, the gases escaped and volcanoes were formed. The volcanoes we have today are very few compared to the number then.
They threw out such ash and smoke that a thick cloud formed and the earth grew dark and colder. At some point, we don't know when, water was formed in these clouds and rain began to fall.
At first this rain turned to steam and rose again, but there was so much water that it finally cooled the earth and stayed. The valleys and lower parts of the Earth were covered. Afterwards, the clouds thinned and the sun began to shine.
On our Clock, we have now come to 4:00, and this long era is finished. How many years have passed? Even today, though the Earth's crust has thickened, it is still thin compared to the inside layers of our planet. There is still much heat and some of those layers are not solid.
In cooling, the earth's crust formed huge plates, which rode upon the surface and rubbed against one another. Where they collided, great mountains arose and sank, earthquakes spread out, or volcanoes brought forth matter kept hot by pressure. This action continues today.
Humans have only seen the center of the earth with computer images. No hole has ever been drilled so deep. It is believed the center is formed of nickel and iron. The symbols for these elements are Ni and Fe. Some scientists have named the center of the Earth NIFE because of this. The layers around the center form the mantle. The crust, also called the lithosphere, is outside. Look closely on the chart and you will see the thin layer of water called the hydrosphere. Surrounding it, invisible but essential to life, is the atmosphere we breathe.
