Question

which circumstances could be sources of error within the experiments? check all that apply.
□ not fully submerging the object when doing the fluid displacement procedure
□ water that is left behind in the collection container when it is transferred for measurement
□ water that soaks into the materials of the balls, affecting the mass in repeated trials
□ the time of day when the measurements are recorded
□ water in the bucket, approximated to the closest 10 ml due to surface tension at the top of the bucket
□ the air pressure in the room and its affect on the scales that measure the mass of each object

Explanation:

• Not fully submerging the object in the fluid displacement procedure can lead to inaccurate volume - and thus mass - measurements as the displaced water volume is not the true volume of the object.
• Water left behind in the collection container during transfer can change the measured volume of displaced water, affecting mass calculations.
• Water soaking into materials of the balls can change their effective mass during repeated trials.
• Air pressure in the room and surface tension in the bucket can affect the scale readings when measuring mass. The time of day when measurements are recorded is generally not a direct source of error for these types of measurements.

Answer:

• not fully submerging the object when doing the fluid displacement procedure
• water that is left behind in the collection container when it is transferred for measurement
• water that soaks into the materials of the balls, affecting the mass in repeated trials
• the air pressure in the room and its affect on the scales that measure the mass of each object