Throughout the reflection, make sure you have a copy of the student guide and your data tables. use the drop-
down menus to complete the statements.
was intentionally manipulated. this was the independent
in part i of this experiment, the
i
variable. the dependent variable measured was the
in part ii of this experiment, the
variable. the dependent variable measured was the
was intentionally manipulated. this was the independent

answer : a model is often used to explain and make things easier to understand when any scientific topic needs to be demonstrated and explained.

as in this case where a scientist wants to use a model to present the results of his detailed scientific investigation. he should do it as it will him to make the audience understand the concept in a much better way. also, it can be changed according to new scientific understandings.