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