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by BlastRoom
Review rock dating, geologic time, seismic waves, and Earth's interior.
#matatag_science_9
40 questions
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A geologist reports that one rock formed before another without assigning ages in years. Which approach was used?
These beds have not been overturned or disturbed. Which labeled layer formed first?
Which labeled feature formed last in this rock sequence?
A sandstone bed contains fragments of granite. How do the fragments compare in age with the bed that contains them?
Which history best explains the curved sedimentary beds shown?
What kind of boundary is marked X?
An eroded granite surface is covered by sandstone. What type of boundary separates these rocks?
Two distant sedimentary layers contain the same short-lived, widespread fossil species. What is the best inference?
Which measurement is most useful for estimating when an igneous mineral crystallized?
What term names the time needed for 50% of an isotope's original unstable nuclei to decay?
Use the graph. How long does one half-life last for this isotope?
A closed sample starts with 60 micrograms of a radioactive parent isotope. How much remains after three half-lives?
Which sample is most suitable for radiocarbon dating?
Why can a mineral age from sandstone differ from the age of its deposition?
Which method matches annual growth patterns in wood samples to establish a calendar date?
What name is used for lake-sediment layers deposited in an annual cycle?
Why do scientists use a geologic time scale?
Which sequence lists geologic time units from the broadest subdivision to the finest?
Approximately what percentage of Earth's history occurred before the Cambrian Period?
Which eon includes Earth's initial formation?
Which era belongs in the blank cell on this time scale?
During which era did mammals diversify greatly after the extinction of non-avian dinosaurs?
Use the time scale. Which period includes 420 million years ago?
Arrange these periods from earliest to latest.
What is the name of the current formally recognized epoch?
Which boundary marks the mass extinction that eliminated non-avian dinosaurs?
Which seismic wave normally reaches a distant recording station first?
How do particles move as an S-wave passes through a material?
Through which materials can S-waves propagate?
The absence of direct S-waves across a broad region on Earth's far side provides evidence for what condition beneath the mantle?
At about 2,900 km depth, seismic behavior changes at the mantle's lower edge. Which boundary is this?
At a scale of 1 cm for every 100 km, how thick should a 2,200 km layer be drawn?
Read the seismogram. What is the time interval between the P-wave and S-wave arrivals?
Use the curves. As epicentral distance increases, what generally happens to the gap between P-wave and S-wave arrival times?
Movement of conductive metal in which region produces most of Earth's magnetic field?
Why does Earth's inner core remain solid despite its high temperature?
Which materials together make up the lithosphere?
Which behavior of the asthenosphere helps plates move over it?
Which pair of layers is separated by the Moho?
In this scale model, which labeled layer has the greatest radial thickness?
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Term 2 Review
40 questions
