Orographic uplift is best described as a. warm, moist air rising over cold, dense air b. two airflows colliding head on c. air being forced upward d. airflow confronting a mountain barrier, causing the air to rise

How does convection affect our atmosphere? our layers of earth? our oceans?

The percent efficiency of a machine can never be 100% (or greater), because in the real world some energy is always converted into a. heat b. work c. input force d. output force

I'm thinking it's 2 you are asked to explain the earth's magnetic field. which is the best reply? 1. the earth's magnetic south is similar to the north pole of a magnet. 2. the earth's core has a strong magnetic charge similar to the south pole of a magnet. 3. the earth's geomagnetic south is similar to the south pole of a magnet. 4. the earth's magnetic charge is not centered at either pole; it varies based on location.