This webquest has 4 parts & students navigate through multiple different websites to gather information to answer the questions. In part 1 students learn about the different layers of the Earth. For parts 2 & 3 students can choose which one of the two to complete. In part 2 students learn about the convection currents and the mantle. In part 3 students learn how we know about the Earth's interior. Part 4 is a bonus fill in the blank for a crust and mantle song.