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What do scientists use to mark boundaries in the geologic time scale?
Wiki User
∙ 6y ago
I'm thinking it's index fossils because index fossils tell when or how old the layer it was found in. If that's what your asking.
Wiki User
∙ 12y ago
Anonymous
fossils
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How do scientists know the consistency?
we know by sticking a ruler into whatever and checking the millimeter mark and however many millimeters there are multiply them by 7.
Where is 0.4 cm on a cm ruler?
If you want to convert 4.3 cm to inches, then divide 4.3 by 2.54.
Why is the degree mark not used in Fahrenheit?
Originally the unit was referred to as a "degree absolute" and written oK. In the late 1960s it was decided to specify precisely what scale was being referred to (there's another absolute temperature scale called the Rankine scale which is based on the Fahrenheit degree). So, the unit was changed from "degree absolute" to "kelvin" and the abbreviation was changed to drop the degree mark. This brought the fundamental SI temperature unit in line with the other fundamental SI units.
Why fixed points are needed before a temperature scale is marked on a thermometer?
Generally two fixes points,Tof pure melting ice and T of steam of water boiling at one atomospheric pressure.are needed to build a standard degree of coldness and hotness. So that there will be a range of T to set the scale.
The kelvin scale is used to measure what?
The Kelvin scale is used to measure absolute temperature, i.e., temperature from absolute zero. The way it is defined, there are no negative temperatures on the Kelvin scale.The Kelvin scale is used to measure absolute temperature, i.e., temperature from absolute zero. The way it is defined, there are no negative temperatures on the Kelvin scale.The Kelvin scale is used to measure absolute temperature, i.e., temperature from absolute zero. The way it is defined, there are no negative temperatures on the Kelvin scale.The Kelvin scale is used to measure absolute temperature, i.e., temperature from absolute zero. The way it is defined, there are no negative temperatures on the Kelvin scale.
Earthquake foci can be used to mark the boundaries of what earth features?
Earthquake foci can be used to mark the earths plate boundaries . The movement along the plate boundary causes the earthquake. Knowing where the foci is can help predict future earthquakes in that scientists can monitor the area for shifts in the plates.
What event might mark the end of a period?
A major geologic change is an event that might mark the end of a period.
Do Transition zones mark the places where geographic realms meet?
True where geographic realms meet tranistion zones, not sharp boundaries
When geographic realms meet mark their contacts.?
Boundaries or Borders
What are chemicals used to mark territorial boundaries called?
Pheromones.
Do lions mark their territory by peeing on the boundaries?
Yes.
What has the author Mark Cantley written?
Mark Cantley has written: '' Problems of scale''
How did the Brontosaurus mark its boundaries?
As it turns out, there is no such thing as a Brontosaurus. It was merely a misidentified Apatosaurus. But there is
What do the distance between the zero mark and scale marks represent?
the distance between the zero mark and scale marks represent how much it weight from nothing or empty.
What is advantage of taking the lowest mark on the main scale as the zero mark over the centere- zero?
The advantage of taking the lowest mark on the main scale as the zero mark over the centre-zero is that it covers for all the errors that may happen.
What is the advantage of taking the lowest mark on the main scale as the zero mark over the center-zero?
The advantage of taking the lowest mark on the main scale as the zero mark over the centre-zero is that it covers for all the errors that may happen.
What do you do to use a table to mark a scale correctly?
calibration
