How are sedimentary rocks formed step by step?, Layers of sediment build up, get compacted, and then cemented into rock., What conditions are needed for a fossil to form?, An organism is quickly buried by sediment and protected from decay, Why are fossils usually found in sedimentary rocks and not in other types of rocks?, Sedimentary rocks form in layers without extreme heat, which helps preserve fossils., True or False? Sedimentary rock layers are oldest at the bottom and youngest at the top., True, True or False? Relative age tells the exact number of years a rock is., False, True or False? Absolute age tells the exact age of a rock in years., True, True or False? Relative age and absolute age give the same type of information., False, What is one example of geologic change on Earth?, Earthquakes, volcanoes, erosion, or plate movement., What do scientists use to learn about Earth’s past?, Fossils and rock layers., What is the geologic time scale used for?, To organize Earth’s history into time periods., True or False? Fossils can be used to help determine the relative age of rock layers., True

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