Fossils
What is a fossil?
What is preserved remains or evidence of ancient living things?
What is relative age?
What is the age of rocks and geologic features compared with other rocks and features nearby?
What is absolute age?
What is the numerical age in years of a rock or object?
What is the longest unit of geologic time?
What is an eon?
What is the Earth's estimated age?
What is 4.6 billion years ago?
What is a cast fossil?
What is a fossil copy of an organism made when a mold of an organism is filled with sediment or mineral deposits?
What is superposition?
What is the principle of undisturbed rock layers, the oldest rocks are on the bottom?
What is an isotope?
What are atoms of the same element that have different numbers of neutrons?
What is the smallest unit of geologic time?
What is an epoch?
What are the characteristics of a good index fossil?
What is a widespread, easily recognizable, found in large numbers, well preserved, and short-lived fossil?
What is a trace fossil?
What is preserved evidence of the activity of an organism?
What is lateral continuity?
What is the principle in which layers are deposited in continuous sheets horizontally until hit or a barrier is reached?
What is radioactive decay?
What is the process that unstable elements naturally change into another element that is stable?
What era is most of Earth's history located in?
What is the Precambrian era?
What is the law of cross-cutting relationships?
What is a geologic feature that cuts across another older feature?
What is a mold fossil?
What is an impression in a rock left by an ancient organism?
What is an unconformity?
What is part of the surface where rock has eroded away, producing a break, or gap, in the rock record?
What is a half-life?
What is a mass extinction?
What is the death of many species on Earth within a short period of time?
What is correlation when referring to rock layers?
What is matching rocks from different locations?
What is a carbon film?
What is the fossilized carbon outline of an organism or part of an organism?
What is an inclusion?
What is a piece of an older rock that becomes part of the new rock?
Why is carbon - 14 the most used element for radioactive dating?
What element is used in every living thing?
What creates the divisions of Earth's history?
What is the connection between climate change, geographical change, and evolution and the effect on Earth's history?
Order the following events in chronological order origin of earth, humans first appear, Cambrian explosion, KT extinction, and the Permian extinction.
What is the origin of earth, Cambrian explosion, Permian extinction, KT extinction, humans first appear?