Astudent conducts an experiment with a steel wool pad, which is comprised of iron. the student washes the steel wool in vinegar and then leaves the wool out in the open air for 15 minutes. the student notices that the wool is changing color (turning brownish-orange) and when the student touches the steel wool, it feels warm to the touch. which of the follow changes occured during this experiment? a. a physical changed occured and energy was given off b. a chemical change occured and energy was given off c. a chemical change occured and energy was absorbed. d. a physical change occured and energy was absorbed

Hannah is writing a report on how albedo affects the global climate. she’s proofreading her passage for any factual errors. which sentence must hannah correct before submitting her report? earth receives energy from the sun. this energy drives many of the processes on earth, including its climate. some part of this energy is reflected by earth’s surface. we use the term albedo to describe the reflected energy. albedo of an object is the ratio of the reflected radiation to the total radiation reaching the object. a value of 0 means no energy is absorbed by the object, whereas a value of 1 means that all of the energy is absorbed. in this way, the albedo of an object can influence earth’s atmospheric temperature.

Why do cells appear different in distilled water than they do in 10% salt water?

How does the viscosity of magma change as magma cools?