Today’s ACT question of the day involves a sort of homemade sundial. A student (who must not have internet access or who has broken his iPhone) has placed a stick in the ground and measured the length of its shadow at certain times of the day.
Category Archives: Science
ACT Question of the Day Explained – January 20, 2014 – Science
Today’s ACT question of the day is a science question about reading charts. We have a pretty cool chart this time, though it’s a bit unconventional:
Image copyright ACT
The question wants to know what we would find at year 80. We can see that this chart is a sort of timeline, so we need to find where year 80 would fall and then see what trees would be growing. Continue reading
ACT Question of the Day Explained – January 16, 2014 – Science
Today’s ACT question of the day is a science question about a bottom-dwelling organism. (Now you have a new name to call your best friend when s/he makes you mad! Not responsible if you try that on your parents.)
We have a table that describes the concentrations of certain ions in the sediment at the bottom of an ocean. Does it matter, for the ACT, if you know what all of those symbols (Fe, O, CO, etc.) stand for? Do you need to know what pH is? Nope. Just make sure you look at the right symbols when it comes time to answer the question.
Speaking of the question, our bottom-dwelling organism is a little picky and it wants a sediment depth that provides the following conditions:
- a neutral pH (which, according to the given text, is 7)
- low Fe2+
- high concentrations of O2
Time to read the chart! Continue reading