Ionly need the top checked in not the bottom.

Personal opinions-no, Text from a science article-yes, Personal experiences-yes, Data from a data table-yes, Observations from another student made-no, Measurements-yes, A prediction-no, Notes you took from class-yes, Something you saw in a movie- no, An interview with an expert-yes, A hypothesis-no, A chart or graph-yes, a photograph-yes, a drawing-yes, an observation your wrote in a book-no,  a model-yes, results from an experiment you conducted

Explanation:The work really depends on how you choose to work out the problems.

they it depends on if one believes about radioactivity, they make a geiger counter beep but maybe it was going to beep anyway electronics do wierd things all the time or it was programmed to beep near certain metals.