Answer:
This question contains a lot of subsections. Please find the variables to each question below
Explanation:
Hypothesis is a testable explanation to a scientific question. It aims at proffering a testable solution to an observed problem. It usually goes in an IF, THEN format.
Dependent variable is the variable being measured in an experiment, while the independent variable is the variable that is manipulated or changed by the experimenter.
The control group is the group that does not receive the experimental treatment while constant is the variable that is kept unchanged for all groups in the experiment.
Based on this explanation, find the answers to the hypothesis, independent variable, dependent variable, constant, and control groups to each question.
2. Dependent variable: How easy it is to remember
Independent variable: Color of the text
Control: Group given Black and White text to read
Constants: Same text
3. Hypothesis: If the temperature is increased, THEN the speed of ants increases or move faster
Independent variable: TEMPERATURE
Dependent variable: SPEED OF ANTS
Control: Ants placed in room temperature
Constants: SAME KIND OF ANTS
4. Hypothesis: IF the pH of the soil is acidic or alkaline, THEN the growth of strawberries will be inhibited
Independent variable: pH of soil
Dependent variable: Growth of strawberries
Control: Strawberries grown in a Neutral pH soil
Constants: Same type of plants (strawberries)
5. Hypothesis: IF caffeine is taken, then the blood pressure will be increased or raised.
Independent variable: CAFFEINE
Dependent variable: BLOOD PRESSURE
Control: Group given no caffeine
Constants: Same amount of caffeine
6. Hypothesis: IF music is played, THEN the heart rate increases
Independent variable: MUSIC
Dependent variable: HEART RATE
Control: Groups placed where no music is played
Constants: Same type of music, same time music runs for etc.
7. Hypothesis: IF bleach is present/used, THEN bacteria will die
Independent variable: Bleach
Dependent variable: Death of bacteria
Control: Bacteria given no bleach
Constants: Same species of bacteria, Same type of bleach
