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Down sides to using an aneroid barometer
less exact, more mechanically complex than a mercury barometer
How does the finger over the straw thing work?
Before you put your finger on it pressure inside and outside are equal, you cover it and lift it up, some water falls out and the gas in the top part of the straw expands making the pressure inside the straw higher until the inside pressure + weight of the water = outside pressure.
Local winds are caused by
bodies of water/land, mountains, elevation differences, vegetation differences (forests, deserts).
the ratio of actual water content to possible water capacity at a given temperature. (Content/Capacity)100%
prevailing winds come over water, becoming moist- it hits a mountain- it rises up over the mountain- it cools and condenses into clouds/rain- it comes over the mountain and warms up, but it has lost all of its moisture, so it's dry and hot = desert.
Air masses are identified by...
the surface they're over (Continental, Maritime, Arctic, Polar, Tropical)
When a heavier nucleus is split into two or more pieces. Doesn't happen naturally, must be induced.
Right hand rule #1- current carrying wires.
Thumb=direction of current, fingers wrap around wire in the direction the field goes.
Right hand rule #2- current carrying loops.
fingers point in direction of loop, thumb points in the direction of the field INSIDE the loop.
Right hand rule #3- moving charges in a magnetic field.
thumb= direction of current or velocity, fingers=direction of field, direction of palm=force in particles are positive.
exerting a force on a charged particle in a magnetic field creates a current (or potential difference).
the direction of an induced current (or voltage), will be such that it opposes whatever caused it/change.
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