(HIGH RETRIEVAL) Sedimentary Rocks 1. What happens when the earth’s surface is eroded? _________________________________________________________ 2. Sediments can harden into sedimentary rock in two ways. They are: A. ____________________________________________________ B. ____________________________________________________ 3. Fill in the blanks: Some examples of sedimentary rocks are __________, __________, __________, and __________. Sandstone is formed from grains of sand pressed tightly together. Sandstones are very common rocks. They are formed from the sand on beaches, in riverbeds, and sand dunes. Sandstones are usually made of the __________. Limestone is formed from tiny pieces of shells of __________animals that have been cemented together. Conglomerate contains sand and rounded pebbles that have also been cemented together. Shale is formed from __________or __________ that has been pressed together. Shale forms in quiet waters such as swamps and bogs. Sedimentary rocks are easy to identify because you can actually see the __________. 4. Fill in the missing pieces of information on this chart. Some Common Sedimentary Rocks Name Image Color Composition _______ Red or Gray Sand grains cemented together Limestone White to _______ Calcite and sometimes fossils _______ Dark Gray Compacted mud Conglomerate Different Colors Rounded _______ and _______ cemented together Homework: Write a paragraph using 8 new vocabulary words from the Sedimentary Rock lesson. http://library.thinkquest.org/J002289/sed.html