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 Science Question of the Day
Science
Questions on the ACT are not about memorizing facts, they are about finding
information and being able to read charts.
They do not require you to know anything that is not given to you!
Passage II
The
Sun's path from sunrise to sunset varies with the time of year. A student
performed the following experiments on three clear, sunny days at three- or
four-month intervals throughout the course of a year to study the path of the
Sun through the sky.
Experiment 1
At
a chosen Northern Hemisphere location, the student placed a stick vertically
into the ground so that 1 meter of its length was left above ground. The
student knew that the length of the shadow was related to the height of the Sun
above the horizon and that the shadow would point away from the direction of
the Sun. The length in meters (m) and direction of the shadow cast by the stick
were measured one hour after sunrise (Shadow A), at mid-morning (B), at noon
(C), at mid-afternoon (D), and one hour before sunset (E) on each of the three
days. The direction of each shadow was determined by placing a magnetic compass
at the base of the stick and aligning the north arrow with the north mark on
the compass. The direction of each shadow was then determined by a comparison
with the compass face markings. The results are recorded in Table 1.
Table 1
|
||||||
Shadow
|
Day 1
|
Day 2
|
Day 3
|
|||
Length
(m) |
Shadow
direction |
Length
(m) |
Shadow
direction |
Length
(m) |
Shadow
direction |
|
A
|
5.0
|
SW
|
8.6
|
NW
|
6.8
|
W
|
B
|
1.2
|
W
|
2.9
|
NNW
|
1.7
|
NW
|
C
|
0.3
|
N
|
2.3
|
N
|
0.9
|
N
|
D
|
1.2
|
E
|
3.0
|
NNE
|
1.8
|
NE
|
E
|
5.0
|
SE
|
8.6
|
NE
|
6.9
|
E
|
Experiment 2
The
following year, the student repeated Experiment 1 at a chosen location in the
Southern Hemisphere. The results are in Table 2.
|
Table 2
|
||||||
Shadow
|
Day 1
|
Day 2
|
Day 3
|
|||
Length
(m) |
Shadow
direction |
Length
(m) |
Shadow
direction |
Length
(m) |
Shadow
direction |
|
A
|
9.0
|
SW
|
5.0
|
NW
|
6.9
|
W
|
B
|
3.2
|
SSW
|
1.1
|
W
|
1.8
|
SW
|
C
|
2.5
|
S
|
0.3
|
S
|
1.0
|
S
|
D
|
3.2
|
SSE
|
1.1
|
E
|
1.8
|
SE
|
E
|
9.1
|
SE
|
5.0
|
NE
|
6.9
|
E
|
When the Sun is at an altitude 45° above the
horizon, a vertical object will cast a shadow with a length equal to the
object’s height. Which of the following days included a measurement taken when
the Sun was at an altitude of 45°?
The first paragraph under
Experiment 1 tells you that the stick (the vertical object) has 1 meter above
the ground. You must find a shadow
length that is equal to the height in order to know that the Sun was at an
altitude of 45° at that moment. Check
the charts. There is only one shadow that
is 1 meter long. It is in the second
chart (Experiment 2) under Day 3, Shadow C.
Circle it and look down at your answer choices.
A. Day 1 in Experiment 1
B. Day 1 in Experiment 2
C. Day 2 in Experiment 1
D. Day 3 in Experiment 2
B. Day 1 in Experiment 2
C. Day 2 in Experiment 1
D. Day 3 in Experiment 2
The correct answer is
(D).
For the ACT
Question of the Day, visit http://www.act.org/qotd/.
To get help preparing for the SAT, PSAT, or ACT Exam, visit www.myknowsys.com!
To get help preparing for the SAT, PSAT, or ACT Exam, visit www.myknowsys.com!
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