Matching Pairs Activity 2 - Social -Match sentencesOnline version Une con flechas. by Raquel Heras Almendros 1 The geosphere has 2 The Earth has three 3 The mantle is 4 The hydrosphere 5 The geosphere 6 The core is 7 The atmosphere 8 The crust is the three layers: core, mantle and crust. layers: geosphere, hydrosphere and atmosphere. the thickest part. land over which we live. is the layer made of water. is the layer made of rock. is the layer of air that surrounds the Earth. the hottest part.