3: A student adds different amounts of ice to four samples of water and records the change in temperature after 30 minutes. What is the independent variable in this investigation?(1 point)
1) initial temperature
2) final temperature
3) amount of time
4) ice cubes added
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4: A student conducts an investigation to show the relationship between temperature and kinetic energy. What would the graph of this relationship look like? (1 point)
1) a diagonal line
2) an S-shaped curve
3) a horizontal line
4) a U-shaped curve
1) The independent variable in this investigation is the amount of ice cubes added. The student is intentionally manipulating the amount of ice added to observe its effect on the change in temperature.
3) The graph of the relationship between temperature and kinetic energy would be a diagonal line. As temperature increases, kinetic energy also increases.