Download Study Guide Geo Time Test

Survey
yes no Was this document useful for you?
   Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Document related concepts

Spherical Earth wikipedia, lookup

Nature wikipedia, lookup

Geobiology wikipedia, lookup

Schiehallion experiment wikipedia, lookup

History of geomagnetism wikipedia, lookup

TaskForceMajella wikipedia, lookup

Evolutionary history of life wikipedia, lookup

Geophysics wikipedia, lookup

History of Earth wikipedia, lookup

Paleontology wikipedia, lookup

Geology wikipedia, lookup

History of geology wikipedia, lookup

Age of the Earth wikipedia, lookup

Transcript
Study Guide - Geological Time
Name _________________________ Core 1 2 3
_____/ 50 pts.
Part A Geological Time Vocabulary: Add the geological term to match the definitions.
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
20.
system of chronological measurement that uses both stratigraphy and radiometric
dating to describe the timing and relationships between events that have occurred
throughout Earth’s history is called
a method of dating geological or archeological specimens by determining the relative
proportions of particular radioactive isotopes present in a sample.
The study of rock layers (strata), especially the distribution, deposition, and age of
sedimentary rocks.
a long and distinct period of history with a particular feature or characteristic; several
hundred million years
subdivision of an era
subdivision of a period
extinct marine arthropod that occurred abundantly during the Paleozoic era, with a
carapace over the forepart, and a segmented hind part divided longitudinally into three
lobes.
the remains or impression of a prehistoric organism preserved in petrified form or as a
mold or cast in rock.
external skeleton
internal skeleton
a theory explaining the structure of the earth's crust and many associated phenomena
resulting from lithospheric plates that move over the underlying mantle.
blue-green algae a group of photosynthetic bacteria which release oxygen into the
atmosphere
a cold-blooded vertebrate animal that has an aquatic gill-breathing larval stage
followed by a terrestrial lung-breathing adult stage. Egg layers in water.
a cold-blooded vertebrate of a class that includes snakes, lizards, crocodiles, turtles,
and tortoises. They are distinguished by having a dry scaly skin, and typically laying
soft-shelled eggs on land.
the state or process of a species becoming extinct, no longer existing on the Earth.
a continent which included all the landmass of the earth prior to the Triassic period
a plant, such as a pine tree, whose seeds are not enclosed within an ovary, fruit.
a plant having its seeds enclosed in an ovary; a flowering plant.
a warm-blooded vertebrate animal of a class that is distinguished by the possession of
hair or fur, the secretion of milk by females for the nourishment of the young, and the
birth of live young.
a mammal of an order whose members are born incompletely developed and are
typically carried and suckled in a pouch on the mother's belly.
21. Which type of skeleton do our classroom pets have? Include at least 2 in each category.
Endoskeleton
Exoskeleton
Both
22. What is the key difference between angiosperms and endosperms? ____________________________
23. What is the key difference between amphibians, mammals and reptiles? _______________________
1
Part B Using a Geological Timelscale Chart: Use Handout I to complete questions 24 24. Create a timeline showing the 4 major eras in chronological order including time spans.
Eras
Time Span:
_________________
________________
_________________
_________________
25. Complete the following table:
Key Organisms
Homo sapiens sapiens
Time Period
Trilobites
Dinosaurs
Mammals are dominant life forms
Fish were dominant life forms
Invertebrates , marine plants
Part C Characteristics of Key Geological Eras – Complete the following chart.
Geological Era
Key Characteristics
26. Precambrian
26. Paleozoic
27. Mesozoic
28. Cenozoic
29. Why are cyanobacteria important? _________________________________________________________________
30. Why are trilobites such good index fossils? ________________________________________________________
31. Why is there such a scarcity of fossils from the Pre-cambrian? __________________________________
2
_______________________________________________________________________________________________________________
Part D Relative Dating – Complete the following table to summarize the key relative dating
principles.
Principle
Description in Your Own Words
32.
Diagram demonstrating the
principle.
33.
34.
35.
36.
37.
38.
39.
Superposition
Cross-cutting
Inclusions
Original Horizontality
39. Use relative dating principles to create a relative
timeline.
_________________________________________________
40. Which principles did you use in # 39?
_______________________________________________________________________________________________________
41.
Use relative dating principles to create a
relative timeline.
_______________________________________________
42. Which principles did you use in #41?
3
_____________________________________________________________________
Part D Absolute Dating:
43. Can you use relative dating principles to determine actual dates? Yes ____ No _____
44. What technique do geologists use to determine absolute dates for fossils and strata?
r_____________________________ t________________________
45. How long does it take a 100.00g sample of Arsenic to decay to 50g? (The half-life or
Arsenic = 33 seconds)
46. How many half-lives does it take a 200 g sample of Arsenic to decay to 25 g? (The halflife or Arsenic = 33 seconds)
Use the following table of commonly used isotopes for problems # 47– 49.
Radioactive Parent
Stable Daughter
Product
Half Life Values
U-238
Pb-206
45 Billion Years
U-235
Pb-207
713 Million Years
K - 40
Ar-40
1.3 Billion Years
C -14
N-14
5730 Years
47. How long would it take for a 50 g sample of K-40 to decay to 50% K-40 and 50% Ar-40?
48. How many half lives does it take a 500 mg sample of U-238 to decay to 125 mg ?
49. How long would it take for 4 half lives to occur for the isotope U-235?
50. How old do geologists estimate the Earth to be? ________________________________ What evidence
do they use to support this date? _________________________________________________________________________
4
5