Part 3. true/false. 2 points each. ltfcrystals that grow next to one but do not share atoms are not considered to be twins. 2. t f the continuous side of bowen's reaction series starts with potassium feldspar and ends with na-rich plagioclase and has solid solution. 3. tfthe depth of formation of an intrusive rock has little effect on textures seen in 4. t fmetamorphism includes changes that occur to rocks under surface or near- 5. t f in dunham's classification, a limestone that is grain-supported and has mud the rock. surface conditions. matrix is called a packstone. 6. tfgranites found at the surface formed from volcanic eruptions. 7. tfbecause of the temperature at formation, sedimentary rock are more likely to metamorphose than igneous rocks.

i would expect light rain in pittsburgh throughout the following 24 to 48 hours. the lower/falling weights in urban areas toward the west demonstrate that a low weight framework is moving from west to east toward pittsburgh. low weight frameworks are ordinarily connected with precipitation. the way that you don't see a major drop in temperature in the more western urban areas demonstrates the low weight framework is moving with a warm front, so just light rain would be normal. substantial downpours or progressively vicious climate is just typically connected with chilly fronts, where the warm air is pushed up and over a cool front quickly. this quickly rising air (convection) is what gives you heavier torrential downpours, and other conceivably serious weather conditions.

a mid-ocean ridge or mid-oceanic ridge is an underwater mountain range, formed by plate tectonics. this uplifting of the ocean floor occurs when convection currents rise in the mantle beneath the oceanic crust and create magma where two tectonic plates meet at a divergent boundary.a geomagnetic reversal is a change in a planet's magnetic field such that the positions of magnetic north and magnetic south are interchanged.