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Math + Science Challenge 1
Math + Science Challenge 1
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1
What is the measure of
<AOB if t
he length of
AO
is 4 meters, and the area of the shaded sector is 6\pi?
120
105
135
160
2
A fan has 5 identical blades, equally spaced. What is the measure of the angle of rotation that would move Blade M to N?
36
72
45
60
3
Equilateral triangle ABC is shown below with each side length given in meters. What is the value of
k
?
4
6
1
8
4
In the studies, which wetland served as the control for the effect of plants on Se removal?
Wetland 3
Wetland 4
Wetland 1
Wetland 2
5
What is the value of \sqrt{a^2+b^2} where a = \sqrt{5} and b = \sqrt{10}
\sqrt{5}+\sqrt{10}
15
\sqrt{15}
\sqrt{50}
6
Based on Figure 2, the relationship between P
L
(in kPa) and (D in m) can be represented by which equation?
PL = \frac{D}{9.8}
PL = 19.6 x D
PL = \frac{D}{19.6}
PL = 9.8 x D
7
Turning on more light will increase the # of electrons emitted/second is supported by which figure(s)?
Figures 2 and 3 only
Figure 3 only
Figure 1 only
Figure 2 only
8
Tien has 30 students. 15 students do ACT, 10 do SAT and 5 do both. How many students are NOT in ACT or SAT prep?
0
5
15
10
9
Tomas has a circular pond with a diameter of 9 ft.Which of the following is closest to the length of the fence around it
18
81
28
9
10
Which of the following inequalities is an equivalent algebraic expression for the statement below?
28-4n > 5
4n < 23
5-4n > 28
4n-5 > 28
11
Is the statement "The maximum energy of electrons increases with intensity" supported by the data in Figure 3 ?
No, because the line does not slope downward from left to right.
No, the same value for maximum energy is given for all values of intensity.
Yes, because the graph line moves right as the value of intensity increases
Yes, the maximum energy of electrons increases as the intensity increases.
12
Figure 2 indicates that the average SE concentration of organic detritus, averaged across all 5 wetlands is
8 mg/kg dw
2 mg/kg dw
11 mg/kg dw
5 mg/kg dw
13
If it is July this month, what month was it 250 months ago?
May
September
August
June
14
\frac{3x-y}{x+y}=\frac{2}{5}then\frac{x}{y}=?
\frac{7}{13}
\frac{2}{5}
\frac{7}{4}
\frac{2}{13}
15
In a regular pentagon, all 5 interior angles are congruent. How large is each interior angle of a regular pentagon?
108
120
60
72
16
The only factor that is common to 200 and an integer
n
is 1.
2
3
5
1
17
According to Figure 2, on October 15, 2000, the O
3
partial pressure was zero for all altitudes in which range?
21-23km
19-21km
20-22km
18-20km
18
In Trial 4, approximately how long did it take the pendulum to complete 20 cycles?
14 sec
0.70 sec
70 sec
1.4 sec
19
Given that
3x
+
5y
=17 and
2x
+
3y
=11, what is the value of
x
+
y
?
4
5
3 \frac{1}{2}
3
20
In the standard (x,y) coordinate plane, what is the slope of the line through (3,7) and (-2,4)?
\frac{5}{3}
\frac{1}{2}
\frac{3}{5}
\frac{4}{2}
21
Each time an atom undergoes the beta decay that is listed in Table 1, the number of protons in the atom will
decrease by 2
stay the same
increase by 1
decrease by 1
