Jonathan started his lesson by studying a vocabulary quiz about Earth's crust and volcanos. Jonathan downloaded a page with 15 definitions. He also was sent a word bank. Jonathan read each question and considered choosing the correct word from the word bank. Jonathan practiced the test wiseness skill of checking off words that he already used. Jonathan read definitions where the word was unfamiliar. He read about a seismograph. Jonathan also consulted a diagram of a volcano on his screen in order to answer the question about the "vent" being the place in a volcano where steam and gas are released. Jonathan reviewed web sites we studied to remember the vocabulary words: hypocenter, epicenter, and fault line. Jonathan referred to his notes made last week on the Earth'c core to answer the questions on the inner core, outer core, and mantle. Jonathan also referred to the diagram of the volcano to answer the quetions about magma and lava, distinguishing one meaning from the other, magma being molten rock within the volcano, and lava being the molten rock that cascades out of the volcano and down the side of the mountain. Jonathan participated in a virtual lab titled: Which type of Earth Change (earthquake, erosion, flood, weathering) will cause the greatest impact? Jonathan saw three large lasagna pans of dirt with the dirt heaped up on one side. On the first pan, he visualized and explained to me what would happen if you gave that dirt 6 squeezes out of a spray bottle. Jonathan told me that this test simulated rain. The second test we reviewed involved two icecubes on top of the dirt pile. We discussed what would happen if the spring weather suddenly became very warm. Jonathan drew a parallel to the concept of floods as a way of weathering soil caused by spring floods. On the third tray of dirt, Jonathan visualized blowing six times through a straw. Jonathan correctly made the parallel to the straw blowing as being wind blowing. He explained to me that the wind would move the dirt to another side. The last type of weathering we talked about was simulated by rocking the whole pan of dirt back and forth six times. Jonathan then told me that this was a simulation for an earthquake. That would be the method of the greatest weathering of soil. Jonathan began to watch a video about the horizons of soil. We will continue the study of soil tomorrow.