1. The Structure of the Earth The Structure of the Earth By the end of the lesson you should be able to: • Identify the four main layers which make up the structure of the Earth. • Explain why a hard boiled egg is similar to the structure of the Earth. Key Terms Crust The outer layer of the Earth made up of solidified rocky plates. Mantle The layer of molten rock on which the crust floats. Outer core made of very hot molten metal. Inner core made of solid metal The Earth’s Structure Can you think what this image has to do with the Earth’s structure? Get Involved 1. Take a hard boiled Egg and tap it gently with a spoon. 2. Carefully peel the cracked shell from the egg. 3. Cut egg in two. Q: What does the surface of the egg look like? Q: What does the inside of the egg look like? Understanding the Earth’s layers The Earth is made up of many layers like the egg Tectonic plates Show what you have learned 1. Draw a cross section of the earth using different sized circles for each layer. 2. Label each layer using the correct term 3. Use a different colour to shade each layer of the Earth’s structure. 4. Explain why the structure of the earth is similar to an egg.