Key questions to ask:
- What are they layers of the earth? (Core, mantle, crust)
- What are the three types of rocks and how are they formed? (Igneous rock is rocked formed from the cooling of the mantle. Sedimentary rock is rock formed when bits of other rock are pressed together. Metamorphic rock is rock formed from heat and pressure.)
- What processes are important in the rock cycle? (Weathering, melting, heat and pressure are important ways that rocks can, over a long time, be changed into a different type of rock.)
5th Grade: Last week, we looked at how the energy from the sun heats water and soil. We took containers of water and soil outside and measured the temperatures over time in the sun and the shade. Students found that the soil heated and cooled much more quickly than water, which maintained a pretty even temperature throughout. On Monday, we practiced line graphing with our results. This activity will provide a basis for how the sun's energy affects the heating and cooling of the earth, weather, and atmospheric conditions. On Wednesday, students where officially introduced to the earth's atmosphere through a writing activity about photos of the earth. We then observed and discussed atmospheric pressure by putting various objects (balloon, marshmallow, bubble wrap, water) in a vacuum chamber. Kids LOVED watching the objects expand and the water change phase. It was so much fun! Next week, we're on to weather.
Key questions:
- What where the results of your heating soil/water experiment? (Soil heated and cooled much more quickly than water.)
- What happened to objects in the vacuum chamber? Why? (The objects expanded due to decreased atmospheric pressure on them. The balloon and bubble wrap stretched and then popped. The water started to change to a gas because of the decreased pressure as well.)
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