In the isentropic coordinate system (see section 4.6), potential temperature is used as the vertical coordinate. because potential temperature in adiabatic flow is conserved following the motion, isentropic coordinates are useful for tracing the actual paths of travel of individual air parcels. show that the transformation of the horizontal pressure gradient force from z to θ coordinates is given by

Animals respond in various ways to stimuli detected through their senses. some of these responses are stimulated by the presence of danger. which of these animal responses is the best example of a response to an immediate threat? a) a rooster crows every morning at the first sign of light. b) as something approaches an octopus, it shoots a cloud of ink. c) from late fall until spring, bears hibernate to preserve energy. reactivate d) a dog is getting hot in the sunlight, so he moves to a shaded area.

Which of the following are considered noble gases? a. bromine b. neon c. argon d. chlorine

How is sound energy produced a. vibrating objects b. objects being heated c. temperature differences d. stationary objects