Here are the solutions to the worksheet based on the scenarios provided.
Step-by-Step Reasoning:
1.
Scenario 2 (Bug Repellent):
* *Scenario:* A bug repellent is sprayed on one arm and not the other. The number of bug bites is recorded.
* *Independent Variable (The Cause):* What is being changed or tested? The presence of bug repellent.
* *Dependent Variable (The Effect):* What is being measured? The number of bug bites.
2.
Scenario 3 (Sleep & Exam):
* *Scenario:* Javier sleeps 9 hours, his sister sleeps 6 hours. They compare scores.
* *Independent Variable:* What is different between the two? The amount of sleep.
* *Dependent Variable:* What result are they looking at? The exam scores.
3.
Scenario 4 (Exercise & Weight):
* *Scenario:* Group A exercises, Group B does not. They measure weight gained.
* *Independent Variable:* What is the difference in their routine? Exercising.
* *Dependent Variable:* What is being measured? The amount of weight gained.
4.
Scenario 5 (Math Class & Assessment):
* *Scenario:* One class studies, the other does not. Scores are compared.
* *Independent Variable:* What is the difference between the groups? Studying.
* *Dependent Variable:* What is the result being measured? The assessment scores.
5.
Scenario 6 (Sunlight & Plant Height):
* *Scenario:* One plant gets sunlight, one does not. We measure height.
* *Independent Variable:* What is the condition being changed? Sunlight.
* *Dependent Variable:* What is being measured? The height of the plant.
6.
Scenario 7 (Sunlight & Plant Color):
* *Scenario:* One plant gets 12 hours of sun, one gets none. We compare greenness.
* *Independent Variable:* What is the condition being changed? Sunlight (duration).
* *Dependent Variable:* What is being observed/measured? How green the plant looks.
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Final Answer:
Row 2:
* Independent: Bug repellent
* Dependent: Number of bug bites
Row 3:
* Independent: Amount of sleep
* Dependent: Exam scores
Row 4:
* Independent: Exercising
* Dependent: Weight gained
Row 5:
* Independent: Studying
* Dependent: Assessment scores
Row 6:
* Independent: Sunlight
* Dependent: Height of the plant
Row 7:
* Independent: Sunlight
* Dependent: How green the plant looks
Parent Tip: Review the logic above to help your child master the concept of variable science worksheet.
