What must happen first for a sedimentary rock to begin forming?, Layers of sediment are deposited on top of each other, The rock melts deep underground, Why are fossils more likely to form in places with lots of mud or sand?, Organisms get buried quickly before they decay, The heat turns them into fossils, Which situation is MOST likely to create a fossil?, A fish quickly buried in mud at the bottom of a lake, A bird staying on the surface of the ground, If Layer A is below Layer B, and Layer B is below Layer C, which is the oldest?, Layer A, Layer C, A fault cuts through Layers A and B, but not Layer C above them. What does this show?, The fault happened after Layer C formed, The fault happened before Layer C formed, Why are index fossils only useful if they lived for a short time?, Because they help identify a specific time period, Because they are easier to find, Which method tells the exact age of a rock in years?, Absolute dating, Relative dating, If two rocks have the same index fossils but are in different places, what can you conclude?, They formed at about the same time, They formed at very different times, Why can’t most sedimentary rocks be dated directly using radiometric dating?, They are made from pieces of older rocks, They are always too soft to test

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