Question

scientific inquiry. select the part of the passage that describes testing the hypothesis. hint: to test the hypothesis, you use experiments or observations to collect data. after walking by some rusted cars parked in the street, lindsey wondered whether all metals are equally susceptible to corrosion. lindsey could not recall ever seeing rusted aluminum objects, and she reasoned that aluminum must be less susceptible to corrosion than other metals, like iron. lindsey gathered some iron nails and aluminum foil. she prepared a saline solution by mixing salt into water. she then poured equal amounts of the solution into four separate cups. next, she placed an iron nail in two of the cups and a piece of aluminum foil in the other two. by the end of the week, lindsey noticed that the iron nails had rusted significantly, while the aluminum foil showed almost no signs of corrosion. she determined that iron is highly susceptible to corrosion in saline conditions, while aluminum is much more resistant.

Explanation:

Lindsey prepared a saline solution, placed iron nails and aluminum foil in separate cups with the solution, and observed the corrosion after a week. This is the part where she uses an experiment to collect data to test her hypothesis about metal corrosion.

Answer:

She prepared a saline solution by mixing salt into water. She then poured equal amounts of the solution into four separate cups. Next, she placed an iron nail in two of the cups and a piece of aluminum foil in the other two. By the end of the week, Lindsey noticed that the iron nails had rusted significantly, while the aluminum foil showed almost no signs of corrosion.