Let’s go through each question one by one and think about the right answer.
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Question 1: One way scientists analyze data is by using ________________.
Scientists collect numbers or observations, and to make sense of them, they often organize the info in charts (like bar graphs) or tables. That helps them see patterns.
- Theory? That’s an explanation, not a tool for analyzing raw data.
- Variable? That’s something that changes in an experiment — not how you analyze.
- Law? That’s a rule that describes nature — again, not for organizing data.
✔ Charts and tables — yes! That’s how you visually sort and compare data.
→ Answer:
C
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Question 2: What is the first thing you should do if an accident occurs in your classroom?
Safety first! If something goes wrong — spill, breakage, injury — the very first step is to tell the teacher. They know what to do next.
- Start first aid? Maybe later — but only if trained and safe.
- Find emergency equipment? Teacher will guide that.
- Go to hospital? Too soon — let the adult decide.
✔ Notify your teacher — always step one.
→ Answer:
B
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Question 3: These kind of observations are made using instruments such as rulers, balances and thermometers.
Rulers measure length (numbers), balances measure mass (numbers), thermometers measure temperature (numbers). So these give you numerical data.
- Qualitative = descriptive (color, smell, texture)
- Quantitative = number-based measurements
✔ Quantitative fits perfectly.
→ Answer:
B
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Question 4: These kind of observation use your senses to observe results.
Your senses = sight, touch, smell, taste, hearing. You’re describing things without numbers — like “it’s blue,” “it smells sweet,” “it feels rough.”
That’s qualitative observation.
- Scientific? Too vague.
- Data? Could be either type.
- Quantitative? Needs numbers — not just senses.
✔ Qualitative — yes!
→ Answer:
C
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Question 5: This variable in an experiment is the one being changed by the scientist.
In experiments:
- Independent variable = what YOU change on purpose.
- Dependent variable = what you measure because of the change.
- Control group = the “normal” group for comparison.
- Data = the results you collect.
So the one *being changed* by the scientist → independent variable.
→ Answer:
D
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Question 6: If scientists cannot obtain exact numbers, they should rely on a(n) ________________.
Sometimes you can’t get perfect measurements — maybe your ruler isn’t precise, or the scale wobbles. In those cases, scientists make educated guesses based on what they know — called estimates.
- Inferences? Those are conclusions from evidence — not approximations of numbers.
- Guess? Too random — scientists don’t just guess.
- Assumptions? Things taken as true without proof — not helpful here.
✔ Estimates — reasonable approximations when exact values aren’t possible.
→ Answer:
C
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Final Answer:
1. C
2. B
3. B
4. C
5. D
6. C
Parent Tip: Review the logic above to help your child master the concept of science worksheet for 8th grade.
