To understand the interplay of observations and models you must first be able to distinguish between things that we observe and things that we infer from models. Consider the following statements about the Sun. Classify each statement as an observation or as an inference based on the current, accepted model for the Sun.
a. Sun emits neutrinos
b. The photosphere emits mostly visible light
c. Convection zone cooler than radiation zone
d. Core temp 10M Kelvin
e. Corona is hotter than the photosphere
f. The composition of the photosphere is the same as that of the gas cloud that gave birth to our solar system
j. Photosphere made mostly out of H and He
h. Sun generates energy by fusing H-->He at its core

as a general rule, scissors have blades less than 6 in (15 cm) long and usually have handles with finger holes of the same size. shears have blades scissors used to cut hair or fabric must be much sharper.

answer: the exterior temperature of commercial jet planes as they leave the stratosphere and return to the ground increases steadily.

explanation:

the lower most layer of atmosphere is troposphere which extends from 0 to 12 km above the surface of the earth. the temperature initially decreases as distance is increased from the earth's surface. commercial jets fly in lower part of the stratosphere. the stratosphere extends upto 50 km. the temperature in stratosphere starts rising again due to presence of ozone which traps the uv rays.

thus, when the planes leave the stratosphere and return to the ground, the exterior temperature increases steadily.

battery with hi vtge high val resist in series