Leaven Plate Tectonics Geologic Time And Fossils
Exam One Questions.
- 1.The scientific method commonly begins with
- A.
Unproven beliefs
- B.
A hypothesis
- C.
A question
- D.
Scientific laws
- E.
Observations
- 2.The term half-life is related most closely to ___________.
- A.
Relative age dating
- B.
Absolute age dating
- C.
Deformation of the asthenosphere
- D.
Formation of the lithosphere
- E.
Organic evolution
- 3.Plate boundaries where plates move past one another are called __________.
- A.
Divergent
- B.
Lithospheric
- C.
Convergent
- D.
Organic
- E.
Transform
- 4.The age of the Earth is _____________.
- A.
4,600,000 years
- B.
5.5 million years
- C.
150,000 to 300,000 years
- D.
4.6 billion years
- E.
704 million years
- 5.The radioactive process creates stable ____________.
- A.
Particles that are expelled
- B.
Daughter atoms
- C.
Rock outcrops in Canada
- D.
Divergent boundaries
- E.
Natural selection
- 6.A mineral with a ratio of 1:1 among parent and daughter atoms must
- A.
Have formed only days ago
- B.
Be at the age corresponding to the second half-life
- C.
Have passed the age of the second half-life
- D.
Be at the age corresponding to the first half-life
- E.
Be worthless for age dating
- 7.Such time units as eons, eras, periods, and epochs in the geologic time scale correspond to _______.
- A.
Seconds, minutes, hours and days
- B.
Days, hours, minutes and seconds
- C.
Seconds, hours, minutes and days
- D.
Months, days, years and hours
- E.
Hours, minutes, days and months
- 8.An example of part of the structure of the ocean floor __________.
- A.
Glacial lake
- B.
River channel
- C.
Continental shelf
- D.
Wind-blown dune
- E.
Alluvial fan
- 9.Fossils that are abundant, widely dispersed and that lived during a relatively shore span of geologic time are _______________.
- A.
Reworked fossils
- B.
Haploid
- C.
Index fossils
- D.
Trace fossils
- E.
Unaltered fossils
- 10.Select the item below most closely associated with a convergent boundary.
- A.
Lateral faults
- B.
Subduction zone
- C.
Hot spots
- D.
Midoceanic ridge
- E.
Continental rifting
- 11.Continental mountain ranges are formed by __________.
- A.
Continental-continental crustal convergence
- B.
Oceanic-oceanic crustal convergence
- C.
Transform boundaries
- D.
Divergent boundaries in oceans
- E.
Divergent boundaries under continents
- 12.Trace fossils are ___________.
- A.
Fossilized imprints of soft-bodied animals or plants
- B.
Segmented worms that existed during the late Precambrian
- C.
Fossilized tracks, trails, burrows and nests made by ancient animals
- D.
Small bits or remnants of the hard body parts of ancient marine animals
- E.
The thin layer of carbon left behind from plant material
- 13.Filling in of many small pores in a fossil by minerals is called ___________.
- A.
Replacement
- B.
Carbonization
- C.
Permineralization
- D.
Mold making
- E.
Cast making
- 14.What is the difference between the relative scale and the absolute scale of geologic time?
- A.
The relative scale of geologic time is based on superposition and fossil succession, whereas radiometric dating provides an absolute scale in which events are measured in years.
- B.
The relative scale of geologic time is based on absolute scale in which events are measured in years, whereas absolute dating provides superposition and fossil succession.
- C.
The relative scale of geologic time is based on sedimentary archives, whereas absolute dating provides a final comparison between two geological entities.
- D.
The relative scale of geologic time is based on event stratigraphy and marker beds, whereas absolute dating provides a numeric scale in which events are measured by isotopes and fossils.
- E.
There is no difference between the relative scale and the absolute scale of geologic time.
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