We are doing a project on electricity as year 8 students. We are going to attempt to make a light bulb in our own made up circuit light up with the power of some onions if possible. May someone please explain, in simple words and vocabulary, what an onion contains inside of it and how it manages to power a light bulb ?

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.

this is poiselle's equation from fluid mechanic in physics. mech eng