WorksheetsACT-Science 3
Total questions: 20
Worksheet time: 20mins
decrease, because soil quality is likely to increase.
decrease, because soil quality is likely to decrease.
increase, because soil quality is likely to increase.
increase, because soil quality is likely to decrease.
Suppose a new crop rotation for Field B included legumes and other deep-rooted and high-residue crops. The SOM of this field will most likely change in which of the following ways? The SOM will:
Yes; based on SOM, Field B had a soil quality rating of fair and Field A had a soil quality rating of poor.
Yes; based on SOM, Field B had a soil quality rating of excellent and Field A had a soil quality rating of fair.
No; based on SOM, Field B had a soil quality rating of poor and Field A had a soil quality rating of fair.
No; based on SOM, Field B had a soil quality rating of fair and Field A had a soil quality rating of excellent.
As soil quality improves, the number of earthworms increases. Students hypothesized that more earthworms would be found in Field B. Are the data presented in
Table 2 consistent with this hypothesis?
Field A in Year 1
Field A in Year 3
Field B in Year 4
Field B in Year 5
If 8 tons or fewer in crop yields were considered a failed harvest, in which year and in which field would there have been a failed harvest?
Figure 1
Figure 2
Table 1
Table 2
Q: Which set of data best supports the claim that Field A has lower soil quality than Field B?
Field A Field A
Field B Field B
Field A Field B
Field B Field A
Based on Figures 1 and 2, consider the average bulk density and the average crop yields for Fields A and B over the study period. Which site had the lower average crop yield, and which site had the higher average bulk density?
Lower crop yield Higher bulk density
H2O was produced.
H2 was produced.
Fe was produced.
FeO was produced.
In the experiments shown in
Table 1 and Figure 1, by measuring the rate at which Fe2O3 was formed every day, the experimenters could also measure the rate at which:
less than 0.56 g
between 0.59 g and 0.72 g.
between 1.23 g and 1.84 g.
greater than 1.84 g.
Table 1, if the amount of Fe2O3 produced on Day 9 had been measured for the salt solution, it would most likely have been:
0.08 g
0.11 g
0.19 g
0.30 g
According to Table 1, what was the amount of Fe2O3 produced by the sugar solution from the time the amount was measured on Day 6 until the time the amount was measured on Day 8?
Day 10
Day 6
Day 3
Day 1
Consider the amount of Fe2O3 produced by the salt solution on Day 2. Based on Table 1 and Figure 1, the water buffered to pH = 10.0 produced approximately the same amount of Fe2O3 on which of the following days?
What is on the x axis?
intensity (Hz)
intensity (db)
frequency (Hz)
frequency (db)
What is on the yaxis?
intensity (Hz)
intensity (db)
frequency (Hz)
frequency (db)
What does the dotted line represent?
sound in air
sound in water
threshold of hearing
threshold of pain
Which of these would cause pain in human ears?
anything over 0 db
160 db
40 db
118 db
What is the lowest frequency humans can hear?
2 Hz
20 Hz
3 x 104 Hz
2 x 105 Hz
A certain dog whistle produces a frequency of 1 x 104 Hz. At 10 db, humans would not hear the sound because
humans don't hear frequencies below 20 Hz
humans don't hear frequencies above 1 x 104 Hz
1 x 104 Hz at 10 db is below the human threshold of hearing
humans don't hear frequencies above 2 x 104 Hz
What is the highest frequency humans can hear?
2 Hz
2 x 101 Hz
4 x 104 Hz
2 x 104 Hz
Based on the figure, sound intensity is greatest in
air for any value of S
water for any value of S
air at S = 10-8 % only
water at S = 10-8 % only
A certain bass violin produces a frequency of 1 x 102 Hz. In order for humans to hear this note, the intensity would have to be at least
0 db
20 db
40 db
118 db
Some ACT science questions do require prior knowledge. To use this graph, you would probably need to know
how sound waves are generated
how sound travels differently in air versus water
scientific notation (powers of ten)
how ears interpret sound
Based on this graph, pain is caused by
low frequencies of sound
high frequencies of sound
high intensities of sounds at various frequencies
high intensities of sounds at high frequencies
