Throughout the reflection, make sure you have a copy of the Student Guide and your data tables. Choose the terms that complete the paragraph. In this lab, you used the characteristics for classifying minerals and rocks to identify mineral and rock samples. To identify the relative hardness of minerals, you conducted a
test. To determine the color of the powder of a mineral, you conducted a
test. You also observed properties of minerals and rocks to identify them.

Acommon technique in analysis of scientific data is normalization. the purpose of normalizing data is to eliminate irrelevant constants that can obscure the salient features of the data. the goal of this experiment is to test the hypothesis that the flux of light decreases as the square of the distance from the source. in this case, the absolute value of the voltage measured by the photometer is irrelevant; only the relative value conveys useful information. suppose that in part 2.2.2 of the experiment, students obtain a signal value of 162 mv at a distance of 4 cm and a value of 86 mv at a distance of 5.7 cm. normalize the students' data to the value obtained at 4 cm. (divide the signal value by 162.) then calculate the theoretically expected (normalized) value at 5.7 cm.