New York State Chemistry RegentsNew York State Earth Science Regents

 
Laboratory Skills: Scientific Inquiry and Techniqu
Living Environment Regents June 2006 Question 32 PDF Print E-mail
Laboratory Skills: Scientific Inquiry and Techniqu

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Correct Answer: Option 3 it contains conclusions not explains by the evidence given.

Conclusions are the findings based on the results and observations of the researcher. If the evidences and the conclusions are different then the research is invalid.

In a research, the higher the sample size, the better. This is because more data will be used to prove or disprove a hypothesis. Hence, option 1 is invalid.

Hypothesis is statement of what most likely be the result of a research. If after the research the hypothesis was not supported, then it is ok. It means that the hypothesis was incorrect. Option 4 is incorrect.

If other individuals are able to duplicate the results then the research is proven to be correct. Option 2 is also incorrect.

 
Living Environment Regents June 2006 Question 33 PDF Print E-mail
Laboratory Skills: Scientific Inquiry and Techniqu

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Correct Answer: Option 1 Future ecosystems will be stressed and many animal habitats may be destroyed.

Since there would be higher demand for resources coming from the ecosystem, there might be depletion of resources leading to unsustainable environment.

Option 2 is incorrect. Global warming will further increase because high population would mean more demand fossil fuels.

Option 3 is incorrect. When all the resources have been used up, the human population will be wiped out due to absence of resources to sustain them.

Option 4 is incorrect. All living things are interconnected with each other. If the human population increases more than the carrying capacity of the ecosystems, the environment will greatly suffer.

 
Living Environment Regents June 2006 Question 39 PDF Print E-mail
Laboratory Skills: Scientific Inquiry and Techniqu

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Correct Answer: Option 1 Green water plants release a gas in the presence of light.

By comparing the two illustrations, we can see that there are bubbles creating an air space on the test tube in the setup with light. This is because light from the bulb aided photosynthesis to take place. Oxygen is one of the products of photosynthesis. The bubbles formed represent oxygen. In the setup without light, there are no bubbles formed because photosynthesis cannot take place in the absence of light.

 
Living Environment Regents June 2006 Question 44 PDF Print E-mail
Laboratory Skills: Scientific Inquiry and Techniqu
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Living Environment Regents June 2006 Question 45 PDF Print E-mail
Laboratory Skills: Scientific Inquiry and Techniqu
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Living Environment Regents June 2006 Question 46 PDF Print E-mail
Laboratory Skills: Scientific Inquiry and Techniqu
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Living Environment Regents June 2006 Question 57 PDF Print E-mail
Laboratory Skills: Scientific Inquiry and Techniqu

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Setup A should have a highest salt concentration than the rest; Setup B will be the control having moderate salt concentration; and Setup C will have low salt concentration.

All setups should have the same amount of brine shrimp eggs, same sizes of glass containers and at the same temperature (room temp).

The number or hatched eggs should be counted every day at the same time frame.

The most number of eggs developed after n number of days will indicate the best concentration for the hatching of brine shrimp eggs.

 
Living Environment Regents June 2006 Question 66 PDF Print E-mail
Laboratory Skills: Scientific Inquiry and Techniqu

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Correct Answer: Option 2 Plant Y has large purple flowers that open at night.

Observations are the things experienced through the use of our senses. The student just used his sense of sight to observe that the large purple flowers open at night. He did not use any instruments or methods to arrive at this statement.

Option 1 is not a mere observation because an instrument has been used for measurement.

Options 3 and 4 are inferences, which are statements involved in drawing a conclusion or making a logical judgment on the basis of circumstantial evidence and prior conclusions rather than on the basis of direct observation. He cannot observe the finches and the household pets because they are not present in the classroom and these may have just come from what he have previously read.

 
Living Environment Regents June 2006 Question 67 PDF Print E-mail
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There are 60 seconds in one minute. To get the pulse/min count, we have to multiply the 20-second pulse counts with 3.

trial 1, 23*3= 69 pulse/min

trial 2, 26*3= 78 pulse/min

trial 3, 21*3=63 pulse/min

To get the average pulse count per minute, we have to get the sum of all the pulse/min and divide them by the number of trials.

69 (t1) + 78 (t2) + 63 (t3)= 210

210/ 3 trials= 70 pulse/min (average)

 
Living Environment Regents June 2006 Question 68 PDF Print E-mail
Laboratory Skills: Scientific Inquiry and Techniqu

lejun06q68

The student should have counted the number of squeezes he was able to make in 20 seconds. This could also have an effect on his pulse rate. For instance, he feels pain as he squeezes more, this would cause the heart to beat faster, thus, increase the pulse rate.

 
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