<p>Rock Worksheet II—Sedimentary Rocks Name: ______</p><p>I. Most of the rocks on the surface of the earth are ______</p><p> rocks. They are made from ______which are small pieces of rock </p><p> and organic material. These were formed by ______of larger rocks </p><p> and the remains of plants and animals. These sediments were then carried by the </p><p> process of ______and deposited. After many layers accumulated, </p><p> the pressure caused the bottom layers to compress and form rock, a process called</p><p>______. Another process, ______, used the </p><p> evaporation of the fluids present in the sediments to glue them together.</p><p>II. Sediments are grouped according to ______and </p><p>______. The smallest sediments are called ______, the </p><p> next smallest are ______, then ______, and the largest are </p><p>______. Different rocks are formed from different sizes of </p><p> sediments. One group of sedimentary rocks, the ______rocks, is </p><p> made up of broken fragments of rock. These rocks are named based on the </p><p>______of the sediments and the roundness of the grains. </p><p>Clastic Rocks Rock Sediment 1. sandstone</p><p>2. shale</p><p>3. siltstone</p><p>4. conglomerate</p><p>III. A second group of sedimentary rocks is called ______because these rocks are formed from ______of fluid which </p><p> leaves the chemicals behind that form the rock. An example is </p><p>______. It contains a lot of the mineral ______.</p><p>IV. Orgainc sedimentary rock is made up mostly of ______(material </p><p> from once living things). ______is also an example of this type of</p><p> rock formed from shells of marine organisms. Coquina is an example of </p><p> limestone with ______shell fragments. Microscopic shell remains </p><p> make up ______which forms the White Cliffs of Dover.</p><p>MOST OF THE TIME ONLY SEDIMENTARY ROCK WILL CONTAIN ______.</p>