Amass of cold, dry air is a mass of warm, humid air. consequently, warmer (lighter) air is often forced to rise above the sloping frontal surface overlying colder (denser) air.

According to the law of conservation of mass, in a chemical reaction the total starting mass of all the reactants equal the total final mass of all the products. true or false?

The transfer of heat through the movement of a gas or liquid a. convection b. conduction c. radiation

Sawyer is studying diffraction. he draws a diagram of a plane wave to show how light waves travel. which best describes sawyer’s error? the wave fronts should be perpendicular to the direction in which the waves move. the arrow showing the direction of movement of the waves should be pointing to the left. the arrow showing the direction of movement of the waves should be pointing downward. the wave fronts should be both parallel and perpendicular to the direction in which the waves move.