Verified Document

Geology You Are Watching Friends On TV Essay

Geology You are watching Friends on TV and Ross, a paleontologist, mentions he found a dinosaur bone that was trapped in lava 120 million years ago. Your little sister asks you how Ross knows that the dinosaur bone is 120 million years old. Answer her question using the information you learned about isotopic dating in this course.

Isotopic dating uses radioactive material to date rocks. It generally compares the presence of a radioactive isotope with the presence of its decay products. Then, using the known decay rates, this process can lead to a determination of the absolute age of the rocks being. There are different types of isotopic dating, including radiocarbon dating, potassium-argon dating, and uranium-lead dating. Therefore, Ross can compare the level of radioactive isotopes and decay products in the bone or lava to determine that it is 120 million years old.

The tour guide asks how fossils can help scientists date sedimentary rocks. Tell her what you've learned about this topic from this unit course.
Certain fossils are limited to different periods of time. These fossils are known as index fossils. If an animal is known to have only lived 50-65 million years ago, then a sedimentary rock formation that contains those fossils must have been formed during that time period. Therefore, by examining the fossils in a rock formation, one can estimate when the rocks were formed. By examining several fossils, one may further narrow down the creation period by

3. On a northward trip on highway 395 on your way to Mammoth for some skiing, you pass by a sign saying that you have entered the Long Valley Caldera. Explain to your…

Cite this Document:
Copy Bibliography Citation

Related Documents

Volcanoes Generally Preserved Geologic Rock Record Eroded
Words: 646 Length: 2 Document Type: Essay

Volcanoes generally preserved geologic rock record eroded . However, materials erupted volcanoes found preserved rock record. From learned types volcanoes, infer type volcano erupted an area-based type volcanic deposits found layers rock? Give specific examples, briefly discuss materials linked types volcanoes. Volcanoes are some of the most interesting and at the same time intriguing manifestations of nature. They have been the object of study for decades and all types of technologies

Volcanoes Are Often Associated With Fire, Earthquakes,
Words: 1160 Length: 4 Document Type: Term Paper

Volcanoes are often associated with fire, earthquakes, victims and damage. The activity of nature often turns peaceful mountains with smoky tops into fire vents with lava and smoke getting out and turning everything into fire and burning it. Why do volcanoes erupt and where does such an incredible energy get from inside the earth? After the radioactivity phenomenon was discovered, especially one of uranium and thorium, scientists began to understand that the

Volcanoes Many People Make the Assumption That
Words: 679 Length: 2 Document Type: Essay

Volcanoes Many people make the assumption that the most severe damage done by volcanoes results from the hot lava that flows from some volcanoes. For example, the lava that flows from Hawaiian volcanoes -- called "Hawaiian volcanism" -- are quite striking and make incredibly beautiful yet dangerous-looking videos and still photos. But that volcanic eruption is not nearly as hazardous as the eruption from a volcano like Mount St. Helens. This

Volcanoes Are One of the
Words: 1525 Length: 5 Document Type: Term Paper

In the United States this strategy is handled by that United States Geographical Survey. The survey has a color coded plan for handling such threats this includes: Green-No immediate threat, Yellow-Watch; Orange- Warning and Red- Eruption in progress. There are certain measures that are taken at each threat level. Conclusion Indeed there are active volcanoes around the world that make many people vulnerable. In most cases scientist can now predict when

Science Volcanoes and Earthquakes Pinatubo
Words: 1519 Length: 4 Document Type: Term Paper

S., with an estimated magnitude of 8.0 on the Richter scale. They formed new lakes, changed the course of the Mississippi River, and could be felt at least a little in a 50,000 square mile area. In contract, the San Francisco 1906 earthquake could be felt moderately in a 60,000 square mile area, even though it was a smaller quake. Kobe earthquake - Occurred in 1995 and measured 7.3 on the

Malcolm Lowry's Under the Volcano:
Words: 1465 Length: 5 Document Type: Term Paper

They still feel the pangs of territorial appropriation, the constraints of being a victim of the colonial project: "You are no a de writer," the Chief responds, "you are de espider, and we shoota de espiders in Mejico" (Lowry 371). Thus, the police in the cafe are not merely symbolic of fascism - they are fascists themselves. The logic of state-based nationalism, as depicted by Lowry in this scene

Sign Up for Unlimited Study Help

Our semester plans gives you unlimited, unrestricted access to our entire library of resources —writing tools, guides, example essays, tutorials, class notes, and more.

Get Started Now