ACT Science

SAT Question of the Day

The SAT question of the day is an Identifying Sentence Errors question that has already been addressed on this blog: click here to see an explanation.

ACT Question of the Day

The ACT question of the day is a Science question that tests your ability to understand constants in experiments.  You don't need any of the information in the charts to answer this question; all you need is the descriptive paragraphs about each experiment.

In the first experiment, the student stuck a stick into the ground so that one meter was exposed.  Then he measured the shadow cast by the stick at different times of the day and recorded the direction of each shadow.  He did this on three different days.

The second experiment was the same as the first, but it occurred a year later in a different location.  What was the constant?  In order to compare the shadows on different days and at different times, the thing making the shadow would have to stay the same: the stick.  Look down at your answer choices.

(F)  This answer concerns the length of the stick.  It matches your prediction exactly!  Quickly check the other choices.

(G)  The shadow direction changed multiple times a day, as well as from day to day, and was not something that the student could control.  Eliminate this choice.

(H)  This answer is a good distraction.  You might assume that the student did this experiment exactly one year later so that the days were the same, but the dates are not recorded.  Remember, the days are changing and resulting in changing data.  You want a constant that stays the same.  Eliminate this choice.

(H)  The shadow length also changed multiple times a day and was not something that the student could control.  Eliminate this choice.

The correct answer is (F).

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