Nicky and I finished the lesson on microchips! We discussed the creation of microchips, how they are distributed on the global market, and how microchips have affected the global political landscape. Nicky and I finished with a quick video on Taiwan.
I had promised to Nicky that if we got through our material, he could chose a lesson about anything! He chose microchips and we began our first lesson with a video and guided questions from me.
Lesson 2: The Geosphere - Structure of the Geosphere: We learned that the geosphere has three main layers, which differ by their densities. Density is a measure of the mass of the material divided by its volume. The outermost layer of the geosphere is called the crust and is formed of brittle rocks. Oceanic crust is formed mainly of the dense igneous rock basalt and gabbro, which have high levels of iron and magnesium. Then we learned that the continental crust is made of igneous, metamorphic, and sedimentary rocks that are rich in silicon and oxygen. These elements that have a fairly low density therefore the continental crust is less dense than oceanic crust.
Earth’s core is the dense, metallic center of Earth.
Discussion Question: How do Earth systems interact to cause the formation of soil?
The rocks of the geosphere interact with the hydrosphere and the biosphere as the rocks are subject to chemical and physical weathering at and beneath Earth’s surface. As the rock material breaks down into finer sediments, it mixes with organic material from the decay of plants and animals; closer to the surface, the movement of plants and animals through the soil creates open spaces for air from the atmosphere to enter and mix with the soil. The soil also serves as a reservoir for different materials, including carbon, phosphorus, and water, which cycle through the geosphere.
Today he learned about the celebrations in Latin America, such as Christmas, the Three Kings, and the New Year, how these days are celebrated and the traditions in Mexico and Spain. He completed one activity from StudySpanish.com.
Lesson 2: The Geosphere - We learned that rocks form from minerals and other materials. There are three main kinds of rocks: igneous, metamorphic, and sedimentary rock. Igneous rocks form when molten rock cools and hardens. Metamorphic rock forms when any kind of rock is subject to high heat and pressure. Sedimentary rock forms from layers of tiny rock fragments cemented together. Physical and chemical weathering causes rocks to break apart involving all Earth systems.
We learned that soil is the loose, weathered material in which plants grow. Soil forms mainly from sediments from rock that get mixed with organic matter. It takes hundreds or thousands of years to build up thick layers of soil. Interactions among all Earth systems occur in soil, and the soil plays important roles in the phosphorus cycle and the carbon cycle.
Today we talked about all the countries that have Spanish as their official language, then we watched a video about the different accents and the difference in grammar in Spanish-speaking countries. At the end of the class, he completed one activity from StudySpanish.com to review grammar.