Planet Earth Explorers: Get Out & Get Dirty! Tectonic plates traverse the planet's surface, underwater Fissures, and violent Volcanoes erupt with explosive power. Taking a closer look at the physical sciences and our dynamic planet during this week, we will time travel through geologic history. Why is San Francisco a hot spot for earthquakes? How did Hawaii form in the middle of the ocean? Are the ocean floors expanding? Earth science includes everything from moving magma to graceful gasses, and encompasses all forms of science. This week we will do chemistry, biology, physics, meteorology, seismology and more.