Question

1. write, using complete sentences, about how you could use the scientific method if you received an error message when you tried to go to a website that you need to use. include at least four steps of the scientific method after stating the problem. be clear about the steps you are using and specifically explain what you would do during each step.
2. nathan is experimenting with snow to find the temperature at which snow melts. he collects samples of snow throughout the winter and measures the melting point. in three tests, he recorded the melting point at -11.9°c, -11.7°c, and -12.1°c. the actual melting point for snow is 0°c. nathan also noticed that the snow was dirty and left behind a salt residue after melting and evaporating.

a. identify one qualitative observation that nathan made about the snow.
b. identify one quantitative observation that nathan made about the snow.
c. are nathans results accurate? why or why not?
d. are nathans results precise? why or why not?
e. what is one inference nathan could make about his results?

Explanation:

Step1: Define scientific - method steps for website error

The problem is receiving an error message on a website. First, make an observation: note the error message details. Second, form a hypothesis: for example, it could be due to a network issue or incorrect URL. Third, test the hypothesis: try accessing other websites (to check network) or re - enter the URL correctly. Fourth, draw a conclusion: based on the test results, determine if the hypothesis was correct.

Step2: Identify qualitative observation for snow

A qualitative observation is non - numerical. Nathan noticed the snow was dirty and left a salt residue after melting and evaporating. So, "The snow was dirty" is a qualitative observation.

Step3: Identify quantitative observation for snow

A quantitative observation is numerical. Nathan recorded melting points of - 11.9°C, - 11.7°C, and - 12.1°C. So, "The melting points of snow samples were - 11.9°C, - 11.7°C, and - 12.1°C" is a quantitative observation.

Step4: Evaluate accuracy of results

Accuracy refers to how close a measurement is to the true value. The true melting point of snow is 0°C, and Nathan's measurements are around - 12°C. So, his results are not accurate because they are far from the actual melting point of 0°C.

Step5: Evaluate precision of results

Precision refers to how close repeated measurements are to each other. Nathan's measurements are - 11.9°C, - 11.7°C, and - 12.1°C. They are relatively close to each other, so his results are precise.

Step6: Make an inference about results

Nathan could infer that the impurities (the salt residue) in the dirty snow lowered its melting point, causing the measured melting points to be lower than the actual melting point of pure snow (0°C).

Answer:

1. For the website error: Observe the error message details. Hypothesize it could be a network or URL issue. Test by accessing other sites or re - entering the URL. Conclude based on test results.
2. a. The snow was dirty.

b. The melting points of snow samples were - 11.9°C, - 11.7°C, and - 12.1°C.
c. No, because they are far from the actual melting point of 0°C.
d. Yes, because the repeated measurements are relatively close to each other.
e. The impurities in the dirty snow lowered its melting point.