Relative Ages of Rocks - Page 2
Questions
- What information about the earth can rocks provide?
- What two elements make up the largest percentage of Earth's crust?
- What is the geologic time scale?
- What information does relative dating provide to paleontologists?
- The expected remaining lifespan of the Sun is thought to be about how many years?
- How many years of the history of Earth do geologists study?
- What is the relative age of a fault that cuts across many rock layers?
- How can older rocks be found on top of younger rocks in a cross-section?
- How are the laws of superposition and crosscutting relationships used to determine the relative ages of rocks?
- Why is uniformitarianism considered to be the foundation of modern geology?
- Does the law of crosscutting relationships involve sedimentary rock only?
- How does evidence that rocks farther from a ridge are older rocks closer to the support the idea of spreading?
- How can you tell if an older rock is above a younger one?
- How do geologists use the idea of superposition ?
- Science tells us that the Ice Age began how long ago?
- How is the geologic column used in relative dating?
- Before the development of isotopic dating methods, how did scientists estimate the age of the earth?