Vocabulary
What does Fossil mean?
What is The preserved remains or traces of an organism that lived in the past?
What method do geologists use to find the absolute age of rocks?
Radioactive Dating
What is the Geologic Time Scale?
What is the geologic time scale is a chronological system—or calendar—used by scientists to organize Earth’s 4.6 billion-year history into structured, hierarchical units based on major geological and biological events recorded in rock layers.
How old is the Earth?
What is 4.6 billion years old?
How do you spell my name?
What is Genevieve?
One of the three long units of geologic time between the Precambrian and the present.
What is an era?
What is the difference between relative age and absolute age?
What is Relative age is the age of a rock compared to the ages of other rocks. Absolute age is the number of years since the rock formed?
What was the first step in developing the scale?
What is scientists began by studying rock layers and index fossils worldwide to place rocks in order of relative age?
What is The Mesozoic Era?
What are my siblings' names?
Who are Gavin, Joel, Charlotte, and Henry?
What does a Vertebrate mean?
What is an animal with a backbone?
What is an unconformity?
What is a gap in the geologic record where rock layers have been lost due to erosion?
What are the major divisions of time from longest to shortest?
What is Eons to Eras to Periods to Epochs?
What does Reptile mean?
What is A vertebrate whose temperature is determined by the temperature of it's eviornment?
What are index fossils?
What are fossils of organisms that were widely distributed but existed for only a short period of time?
What is an event during which many types of living things become extinct at the same time?
What does the Law of Superstition mean?
What is the geologic principle that states horizontal layers of sedimentary rock?
How do index fossils help geologists determine rock ages?
What is their help match and date rock layers in different areas? If different rock layers contain the same index fossil, do they form at roughly the same time?
What is it combined with iron in the oceans and forms iron oxides (rust)?