Geochem Test 1

Geochem Test 1 - A bsolute Dating : specific dates for a...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Absolute Dating : specific dates for a unit of rock expressed as years before present Geothermometry : temperature at which rock formed Geobathemetry: pressure at which rock formed Doppler Effect: wavelength of waves emanating from a moving source appear longer or shorter, depending on whether the source is moving towards or away from observer If a galaxy is moving faster away it will appear red and have a large wavelength If our galaxy is moving toward the galaxy and we are moving faster, the galaxy will appear blue and have a smaller wave length Hydrosphere: consists of the combined mass of water on earth Atmosphere: a layer of gases that surround our earth Dalton’s Law (Partial Pressure): the total pressure of a mixture of gases is the sum of the pressures of individual components. P total = P 1 + P 2 + P 3 + …. Ideal Gas Law: PV=nRT; to manipulate a real gas through the equation to measure as an ideal gas Mole Fraction: the number of moles of n divided by the total number of moles in the solution X 1 = n 1 / n Σ 1 Le Chatelier’s Principle: if a system at equilibrium is perturbed, the system will react in such a way as to minimize the change; if a system at equilibrium is changed it will either shift towards the products or reactants to combat the change Steady State: a situation in which the sources and sinks of a component in a system are in a delicate balance, such that the concentration remains approximately constant; the “leaky” bucket analogy; amount going in is equal to the amount going out; F in = F out = A/ ; our atmosphere is is in a steady state and not equilibrium τ Residence Time ( ): τ a measure of average time an individual molecule stays in the atmosphere, assuming that the atmosphere is well mixed
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 4

Geochem Test 1 - A bsolute Dating : specific dates for a...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online