Direction: Based from the problem/situation about the growth of plants. Identify the independent, dependent and extraneous variable using the given clues in the box below. Scientific Problem: Does sunlight affects the growth of plants? CLUES : Independent Variable: Sunlight plant height soil temperature water Dependent Variable: Extraneous Variables:
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Answer:
Answer:
1. If plants get sunlight, then they will grow
Independent variable: Amount of sunlight received by the plants
Dependent variables: Plant growth (in centimeters)
2. If I sleep 8-10 hours at night, then I will be mentally ready for the next day
Independent variable: Number of sleep at night
Dependent variables: Mental alertness (can be measure using tests like reflex tests or a standardized academic test)
3. If you put good brand of fertilizer on plants, then they will produce more fruits.
Independent variable: Fertilizer brands used on plants
Dependent variables: Number of fruits produced by the plant per season
4. If I'll brush my teeth everyday, then I will not get cavities
Independent variable: Frequency of brushing of teeth
Dependent variables: Number of cavities observed on teeth after a month
5. If I eat more vegetables and fruits, then I will not get sick easily
Independent variable: Frequency of meals with vegetables and fruit included
Dependent variables: Frequency of getting sick for the entire year.
Explanation:
Dependent variables are factors being affected by the independent variables.
Independent variables are variables that don’t change and are not affected by factors or other variables acting on it. These are the variables that are changed in an experiment.
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