ICSE Class 7 Answered

The four main characteristics of sedimentary rocks are:

1. Sedimentary rocks are also known as secondary rocks as they are formed by the sediments of other rocks, denuded and deposited by the agents of gradation.
2. Sedimentary rocks are largely found on the Earth’s surface and cover 75% of the Earth’s area.
3. These rocks are generally not crystalline in nature. They are soft and have many layers as they are formed due to the deposition of sediments.
4. These rocks may have the remains of plants and animals in between the various layers.