please answer
DIRECTIONS:
Identify the variables in each problem (independent variable, dependent variable, and controlled variable). Read each
problem carefully.
GUIDE QUESTIONS:
1. Problem: How does the amount of water affect the height of bean plants over two weeks?
IV –
DV –
CV –
2. Problem: What is the effect of different light durations on the number of leaves produced by sunflowers within a month?
IV –
DV –
CV –
3. Problem: How does the duration of exercise impact the heart rate of individuals aged 12–14?
IV –
DV –
CV –
4. Problem: What is the relationship between the type of insulation and the time it takes for ice to melt in different environments?
IV –
DV –
CV –
5. Problem: How do different types of fertilizers affect the growth of tomato plants over four weeks?
IV –
DV –
CV -
6. Problem: What is the impact of listening to different genres of music on the concentration levels of students during a 30-
minute study session?
IV –
DV –
CV –
7. Problem: How does the salinity of water influence the growth of lettuce plants over three weeks?
IV –
DV –
CV –
8. Problem: What factors affect the distance traveled by paper airplanes when launched indoors?
IV –
DV –
CV –
9. Problem: How does the type of surface impact the bounce height of rubber balls when dropped from the same height (control
variable)?
IV –
DV –
CV –
10. Problem: How does varying the cooking time affect the texture of chocolate cakes using the same recipe?
IV –
DV –
CV –
11. Problem: What is the relationship between the strength of magnets and the number of paper clips attracted in a controlled
environment?
IV –
DV –
CV –
12. Problem: How does the amount of salt added affect the boiling point of water during a cooking experiment?
IV –
DV –
CV –
13. Problem: What is the impact of different brands of paper towels on their absorbency when cleaning up a fixed amount of
liquid?
IV –
DV –
CV –
14. Problem: How does the type of soil influence the height of marigold plants over a month?
IV –
DV –
CV –
15. Problem: What is the effect of temperature on the rate of crystallization in a saturated solution?
IV –
DV –
CV –
16. Problem: How does the distance from a sound source affect the intensity of the sound measured using a sound meter?
IV –
DV –
CV –
17. Problem: What is the impact of different types of soap on the surface tension of water using identical containers?
IV –
DV –
CV –
18. Problem: How does the length of a pendulum influence the time it takes to complete one full swing in a controlled
environment?
IV –
DV –
CV –

19. Problem: What is the correlation between the pH level of soil and the health of cucumber plants over a growth period?
IV –
DV –
CV –
20. Problem: How do different liquids impact the rate of evaporation when exposed to the same environmental conditions?
IV –
DV –
CV –
21. Problem: How does the time spent reading affect the memory retention of middle school students?
IV –
DV –
CV –
22. Problem: What is the relationship between air pressure and the size of balloons when inflated in a controlled setting?
IV –
DV –
CV –
23. Problem: How does the type of paper affect the absorption of ink when using different writing instruments?
IV –
DV –
CV –
24. Problem: How does the water temperature influence the diffusion rate of food coloring in a controlled environment?
IV –
DV –
CV –
25. Problem: What is the impact of humidity levels on the longevity of curls produced using a curling iron?
IV –
DV –
CV –
26. Problem: How does the wind speed affect the duration and height of kite flight using the same type of kite?
IV –
DV –
CV –
27. Problem: What is the effect of different brands of soap on the size of soap bubbles produced using identical bubble wands?
IV –
DV –
CV –
28. Problem: How does the amount of water influence the germination rate of sunflower seeds in a controlled environment?
IV –
DV –
CV –
29. Problem: What is the correlation between the type of battery and the brightness of a flashlight during a fixed time period?
IV –
DV –
CV –
30. Problem: How does the surface type affect the speed of toy cars when released from the same height?
IV –
DV –
CV –