Anomalous Results - G.Science Grade 8

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This topic is about anomalous results and suitable for grade 8 students. They must choose the exact answer for each questions

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novica rahmadhani

Indonesia

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Anomalous Results - G.Science Grade 8


Froggy Jumps Anomalous Results - G.Science Grade 8Versión en línea This topic is about anomalous results and suitable for grade 8 students. They must choose the exact answer for each questions por novica rahmadhani 1 What is an anomalous result? a A measurement that does not fit the pattern or is significantly different from what is expected. b A measurement that perfectly aligns with a scientific law or a line of best fit. c 2 What is another common term used in science for an anomalous result? a Range b Outlier c 3 How should you handle an obvious anomalous result when drawing a line of best fit on a graph? a Stop the line entirely before reaching the x-coordinate of the anomalous point. b Ignore the anomalous point and draw the line through the remaining points that fit the pattern. c 4 What can the presence of anomalous results affect? a The average and the range of a set of results. b The independent variable chosen before the experiment started. c 5 What type of error typically causes an anomalous result that affects only one reading? a A random error b A historical error c 6 Which of the following is an example of a random error caused by human observation difficulties? a Using electronic sensors that log data automatically at exact intervals. b Reading a measuring cylinder scale from different angles each time. c 7 If someone forgets to start or stop a stopwatch promptly, what kind of experimental problem arises? a A source of random error that can cause an anomalous result. b . A change in the true atomic mass of the chemicals involved. c 8 What is a valid reason to safely ignore an anomalous result when analyzing a pattern? a b You should ignore any data point that you personally dislike or find difficult to graph. c 9 Which of the following equipment issues represents a source of error mentioned in the text? a The apparatus is faulty or a balance is not being set at zero. b The apparatus is too clean and lacks dust particles. c 10 A student performs the experiment but forgets step D entirely, leaving the crucible lid tightly sealed the entire time after the magnesium starts to burn. What is the most likely outcome regarding the mass change? a The mass change will remain perfectly accurate because the lid keeps the system completely isolated. b The mass will increase less than expected because the magnesium will run out of oxygen to react with c 11 Why is it chemically important to 'clean' the magnesium ribbon with an abrasive material (like sandpaper) before measuring its initial mass in step A? a To remove any pre existing layer of magnesium oxide that would skew the initial mass data b To coat the magnesium with carbon particles to catalyze the thermal combustion process c 12 Which of the following modifications would best improve the reliability of the results if you suspect some magnesium oxide was lost as smoke? a Repeat the experiment multiple times and intentionally minimize the time the lid is lifted b Perform the heating process over a shorter duration at a significantly lower temperature. c 13 The range is the ........ between the ............ and the lowest values. a difference, highest b total, greatest c 14 The temperature of the liquid stays the same as it ....... a evaporates b boils c

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Anomalous Results - G.Science Grade 8

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Anomalous Results - G.Science Grade 8Versión en línea

por novica rahmadhani

What is an anomalous result?

What is another common term used in science for an anomalous result?

How should you handle an obvious anomalous result when drawing a line of best fit on a graph?

What can the presence of anomalous results affect?

What type of error typically causes an anomalous result that affects only one reading?

Which of the following is an example of a random error caused by human observation difficulties?

If someone forgets to start or stop a stopwatch promptly, what kind of experimental problem arises?

What is a valid reason to safely ignore an anomalous result when analyzing a pattern?

Which of the following equipment issues represents a source of error mentioned in the text?

A student performs the experiment but forgets step D entirely, leaving the crucible lid tightly sealed the entire time after the magnesium starts to burn. What is the most likely outcome regarding the mass change?

Why is it chemically important to 'clean' the magnesium ribbon with an abrasive material (like sandpaper) before measuring its initial mass in step A?

Which of the following modifications would best improve the reliability of the results if you suspect some magnesium oxide was lost as smoke?

The range is the ........ between the ............ and the lowest values.

The temperature of the liquid stays the same as it .......