Lesson Worksheet: Scientific Investigations Science
In this worksheet, we will practice formulating a measurable question and conducting a reliable investigation.
Q1:
Students in class B are measuring which will dissolve faster in water: salt or sugar. They have written a list of steps to carry out a reliable investigation.
- Put a cup of water in two beakers.
- Label the beakers cup A and cup B.
- Measure a tablespoon of salt and a tablespoon of sugar.
- Measure the time taken for sugar to dissolve in cup A and salt to dissolve in cup B.
- Measure the time taken for each substance to dissolve.
What should the next step be?
- ARepeat the steps.
- BForm a conclusion.
- CMake a prediction.
Q2:
Below is a table of types of questions in an investigation.
| Measurable Questions | How long does it take for ice to melt? |
|---|---|
| Nonmeasurable Questions | What is the color of ice? |
Is the following question measurable or nonmeasurable?
What is the temperature of ice?
- ANonmeasurable
- BMeasurable
Is the following question measurable or nonmeasurable?
How does ice taste?
- AMeasurable
- BNonmeasurable
Q3:
A class is investigating the amount of time it takes for sugar and salt to dissolve in water. Below are their results.
| Amount of Salt Used (Teaspoons) | 2 | 2 | 2 |
|---|---|---|---|
| Time Taken to Dissolve Salt (Seconds) | 3 | 3 | 3 |
| Amount of Sugar Used (Teaspoons) | 3 | 4 | 5 |
|---|---|---|---|
| Time Taken to Dissolve Sugar (Seconds) | 5 | 6 | 7 |
Are the results reliable or unreliable?
- AThey are unreliable.
- BThey are reliable.
Why are the above results unreliable?
- ADifferent amounts of sugar have been used.
- BThe same amount of sugar has been used.
- CThe investigation has not been repeated.
- DDifferent stopwatches were used.
Q4:
What does the term reliable mean in a scientific investigation?
- AThe investigation is the same throughout.
- BThe investigation is accurate.
- CThe investigation is repeatable.
- DAll of the answers are correct.
Q5:
Natalie and Amelia carry out an experiment to investigate how long it takes for salt and sugar to dissolve in water.
Natalie recorded her results as follows.
| Time Taken to Dissolve Salt (Seconds) | 3 | 3 | 3 |
|---|---|---|---|
| Time Taken to Dissolve Sugar (Seconds) | 5 | 4 | 5 |
Amelia recorded her results as follows.
| Time Taken to Dissolve Salt (Seconds) | 3 |
|---|---|
| Time Taken to Dissolve Sugar (Seconds) | 6 |
Fill in the blank to explain why Natalie’s investigation is more reliable than Amelia’s: The results are .
- Arepeated
- Bmeasured inaccurately
- Cin a table
Q6:
Jennifer wanted to see how far the students in her classroom could jump.
She asked the measurable question below:
How far can students jump?
Which of the following describes how an investigation can answer this question?
- AA conclusion is made that shows how far students can jump.
- BStudents’ jumps are measured.
- CA prediction is made on how far the students can jump.
- DAll of the answers are correct.
Q7:
Look at the image.
Which of these is a measurable question for what you observe in this image?
- AWhat type of shoes is the athlete wearing?
- BHow far did the athlete jump?
- CWhat color is the athlete’s hair?
- DWhat material did the athlete jump on?
Q8:
Chloe wanted to use this question in an investigation.
What data does she need to collect?
- ASpeed
- BDistance
- CTemperature
Q9:
Fady and Engy are investigating the masses of different vegetables.
What is the clearest way to record their investigation data?
- AIn a table
- BIn sentences using words
- CIn video or audio recordings
- DIn diagrams and pictures
Q10:
Students in class A want to find out which student can jump the highest.
An investigation is carried out with two students of different heights jumping the high jump.
Which of the following is a likely prediction of the investigation?
- AStudent 1 will jump higher because he is shorter.
- BStudent 1 will not jump as high as student 2.
- CStudent 2 will jump higher because he is shorter.
- DStudent 1 will jump higher because he is taller.
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