7th Class (CBSE) Social Science: Inside Our Earth – Quiz
17 Multiple Choice Questions related to 7th Class (CBSE) Social Science: State Government:
- The Earth is made of three layers – the crust, the mantle and the core.
- The crust (5-70 km thick) is the outermost and thinnest layer. The mantle (2900 km thick) is made of the upper mantle and semi-solid inner mantle.
- The crust and the outer part of the upper mantle form lithosphere.