Jet Stream and Weather

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jet stream cold north to south warm west to east wind current

In the US our weather is governed by the . The high-altitude, fast flowing that moves from . The jet stream separates cold Arctic air to the north from warmer air to the south. Usually, if you’re north of the jet stream, the weather will be ; and if you’re to the south, it will be . If the jet stream is passing above your location, it’s probably raining or snowing. The jet stream isn’t straight; it’s wavy in the direction, with peaks and troughs. The farther north and south these peaks and troughs extend, the more extreme the temperatures vary.

the answer is:  

line graphs show patterns in data with variables that change over time; whereas, circle graphs show data as parts out of a whole (such as out of 100%).

i think that the answer is c

it can be observed without changing the identity of the object.

it depends on what substance you're talking about as well as many other factors. in quantum mechanics, the observation of particles affects the observers ability to measure certain properties. for example: you can know the velocity of a particle, but you can't know it's position; or you can know it's position, but not it's velocity. it's like trying to find out where a grain of sand is by throwing other grains of sand at it. once you find out where it is, it's been moved. it's also like trying to find an answer to the question of whether or not a tree falling in a forest makes a sound if nobody is there to hear it. paradoxically, the only way to find out is to be there and hear it.

the seeing the electronic configuration we can say that the element is fluorine.

fluorine is the most electronegative element in the periodic table.

but by only seeing the configuration we cannot say about its reactivity because we don't know if its configuration after excitation or by addition of electrons.

but if not then, it is the lightest halogen and exists as a highly toxic pale yellow diatomic gas at standard conditions. as the most electronegative element, it is extremely reactive: almost all other elements, including some noble gases, form compounds with fluorine.