SCIENCE TA on pages Name 201-244 in your textbook. Student Number City Zip State
ID: 294928 • Letter: S
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SCIENCE TA on pages Name 201-244 in your textbook. Student Number City Zip State Code T if the statement is true. If the statement is false, circle F: then write the word or phrase the blank line that makes the statement true when substituted for the word or phrase in boldface type Absolute age only indicates that one rock layer is younger or older than another rock layer. I. T F 2TF During James Hutton's lifetime, the consensus was that the Earth was about 6000 years old. 3, T The boundary between 2 layers of sedimentary rock is a transition zone. 4. T F An unconformity is the interface between rock layers where there is a break in the geologic record because of erosion. 5. T F A break in the geologic record that represents an interval of missing time is called a gap. 6. T F A fault is a break or crack in Earth's crust along which rocks shift their position. 7. T F Isotopes of the same element have the same number of protons but different numbers of electrons. The study of fossils is archeology. Fossils that form in hardened tree sap are examples of 9. T F amber. 10. T F from Evolution is a process by which new preexisting species by means of naturaseleionExplanation / Answer
1. F - Absolute age is the true age of a rock or fossil. Absolute age tells scientists the number of years ago a rock layer formed.
2. F - Henry M Morris - 6000 yrs old.
3. F - Boundary between the upper mantle and lower mantle is called Transition Zone.
4. T
5. F - A gap is a low area between two higher-elevation landmasses, such as mountains.
6. T
7. F - Isotopes have different no. of neutrons.
8. F - Archeology is the study of human activity through the recovery and analysis of material culture.
9. F - Amber is the fossilized resin from ancient forests.
10. T
11. Alpha Decay
12. Angular Unconformity -
An angular unconformity is an unconformity where horizontally parallel strata of sedimentary rock are deposited on tilted and eroded layers, producing an angular discordance with the overlying horizontal layers.
Disconformity -
A disconformity is an unconformity between parallel layers of sedimentary rocks which represents a period of erosion or non-deposition This type of erosion can leave channels and paleosols in the rock record.
Nonconformity -
It is an unconformity that separates crystalline rocks, either igneous or metamorphic, from sedimentary rocks.A nonconformity is also referred to as a defect which is a deviation from a particular specification.
13. For being fossilized, an organism must be buried quickly before it is destroyed by erosion or eaten by other organisms. Thus they are exclusively found in sedimentary rocks.While Igneous rocks, which form from cooling magma or lava, and metamorphic rocks, which have been altered by heat and pressure, are unlikely to contain fossils.
14. A
15. B
16. A
17. D
18. C
19. A
20. C
21. A
22. D
23. F
24.T
25.T
26.T
27.F
28.F
29.T
30.T
31. Uniformitarianism is the theory about the changes in the earth's crust during geological history which have resulted from the action of continuous and uniform processes.
Significance -Uniformitarianism is a geological doctrine. It states that current geologic processes, occurring at the same rates observed today, in the same manner, account for all of Earth's geological features. Thus, it assumes that geological processes are essentially unchanged today from those of the unobservable past, and that there have been no cataclysmic events in earth's history. As present processes are thought to explain all past events, the Uniformitarian slogan is, "the present is the key to the past."
35. C
36. A
37. B
38. F
39. A
40. E
41. Middle Cretaceous Period
42. Triassic Period
43.Late Triassic Period.
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