Apply the scientific method to environmental investigation. THE EXPERIMENTResear

Question

Apply the scientific method to environmental investigation. THE EXPERIMENTResearchers wanted to determine if a new organic pesticide Z was effective at killing grasshoppers that typically invade cornfields. The effect of the grasshoppers in the fields is a decrease in yield which has economic consequences on the farmers. For the study two ten-acre cornfields located 1 mile apart were chosen. The cornfield to the west was sprayed only with water. The cornfield on the east received the same amount of water with a 10% solution of organic pesticide Z. Samples of the numbers of grasshoppers in the field were made every week for 10 weeks. RESULTSWest field treated only with waterThe number of grasshoppers in the west field doubled after ten weeks. East field treated with pesticide ZThe number of grasshoppers in the east field declined by 50% after 10 weeks.

7).Which of the following is the most accurate conclusion about these results?

A. Pesticide Z is a good way to control most insect infestations on fields of corn, wheat, or oats.

B. East fields are more likely than west fields to have problems with grasshoppers eating corn crops.

C. If a cornfield is sprayed with pesticide Z, it will have fewer grasshoppers 10 weeks later.

D. Pesticide Z is unable to kill grasshoppers and is not suitable for the use in modern agriculture.

8) Based on the results of the experiment what will be your recommendation to the farmer in order to decrease the number of grasshoppers in the cornfield.

9) Arrange the stages of the scientific method listed below in order from first to last. Analyze data Formulate hypothesis Make observation about nature Reject or accept hypothesis Conduct experiments

10) You have noticed that after you forget to water your houseplant it wilts. This is an example of which part of the scientific method: a. Hypothesis b. Observations c. Experiment

Explanation / Answer

7) Since, the number of grasshoppers in the east field declined by 50% after 10 weeks(which was sprayed with a 10% solution of organic pesticide Z) hence option "C" that is If a cornfield is sprayed with pesticide Z, it will have fewer grasshoppers 10 weeks later is correct.

8) Based on the results of the experiment I'll be recommending the farmer to water the filed by mixing solution of organic pesticide "Z" to decrease the number of grasshoppers in the cornfield.

9) The order is:

Conduct experiments

Analyze data

Formulate hypothesis

Make observation about nature

Reject or accept hypothesis

10) Since we are forgetting to water the plant and then it becomes dried this is an example of observation, hence "b" is correct answer.

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