Year 8 Science · Unit 3 · Lesson 12
Foundation Worksheet
Learning Goals
Fill the gap
Choose the correct word from the word bank to complete each sentence. Two words will not be used.
When scientists carry out experiments, they collect — measurements and observations recorded during the investigation. A results organises data into rows and columns, making it easier to compare values from different trials. To reduce the impact of random errors, scientists calculate an from their repeat trials. A is a general pattern in the data, such as "as temperature increases, reaction rate also increases." A result that does not fit the overall pattern is called an , and scientists should investigate it rather than simply delete it. A is used to display results visually, and a summarises what the data shows and links back to the original question.
True or False? Fix the false ones
Circle T or F for each statement. If the statement is false, rewrite it correctly on the line below.
An anomalous result should always be deleted from your data table to make your graph look cleaner.
Correct it:
Calculating an average from multiple trials reduces the impact of random errors on your results.
Correct it:
A line graph is always the best type of graph for displaying chemical reaction data, even when comparing named categories.
Correct it:
Just because two things are correlated does not mean one causes the other.
Correct it:
1. A student doing a reaction experiment notices one result is much higher than all the others. Describe two things they should do before deciding whether to include this result in their average.
2. A student writes: "My results prove that higher temperature causes faster reactions." Identify two problems with this conclusion statement and explain how it could be improved.
Wrap Up
In one sentence, what was the main idea of this lesson?