J
james91091
Guest
a)isothermal lapse rates
b)stable air
c)all polar air masses
d)unstable air
e)all warm fronts
why do most tornadoes in the central US occur during the spring months?
a)surface air is most humid
b)air-mass contrasts are greatest
c)divergence of air aloft is greatest
d)solar energy is a maximum
e)upper-air temperatures are warmest
tornadoes and midlatitude cyclones are similar in that
a)both form in the trade wind belt
b)both are most common and well developed in the winter season
c)both are areas of low pressure
d)both have conspicuous surface fronts
why is strong heating of the ground by the sun associated with t-storms?
a)increase the pressure gradient
b)increase the wind speed
c)leads to greater instability
d)reduces the dew pt
e)reduces the rel humidity
why is very humid air near the surface a necessary ingredient for severe t-storms?
a)more latent heat is then available as energy for the storm
b)high humidity makes the air more dense
c)high humidity strengthens the cold front
d)high humidity makes the rising air cool more rapidly
e)lapse rates are larger in humid air
b)stable air
c)all polar air masses
d)unstable air
e)all warm fronts
why do most tornadoes in the central US occur during the spring months?
a)surface air is most humid
b)air-mass contrasts are greatest
c)divergence of air aloft is greatest
d)solar energy is a maximum
e)upper-air temperatures are warmest
tornadoes and midlatitude cyclones are similar in that
a)both form in the trade wind belt
b)both are most common and well developed in the winter season
c)both are areas of low pressure
d)both have conspicuous surface fronts
why is strong heating of the ground by the sun associated with t-storms?
a)increase the pressure gradient
b)increase the wind speed
c)leads to greater instability
d)reduces the dew pt
e)reduces the rel humidity
why is very humid air near the surface a necessary ingredient for severe t-storms?
a)more latent heat is then available as energy for the storm
b)high humidity makes the air more dense
c)high humidity strengthens the cold front
d)high humidity makes the rising air cool more rapidly
e)lapse rates are larger in humid air