In science class, harry and his classmates are performing a controlled scientific investigation. the teacher has already picked a topic and testable question for the class to study and has provided background research on the topic. before performing the investigation, the students must first a. form a hypothesis to predict the outcome of the investigation. b. analyze the data that results from the investigation. c. record data from the investigation in graphs and charts. d. communicate the results of the investigation with the teacher.

The steps of research follow the sequence as

a) make an observation

b) Propose a hypothesis for the observation made

c) Prediction of the correctness of hypothesis

d) Perform experiment

e) conclude the problem

So answer is

i) record data from the investigation in graphs and charts.

ii) form a hypothesis to predict the outcome of the investigation.

iii) analyze the data that results from the investigation

iv) communicate the results of the investigation with the teacher.

most historians agree that gabriel mouton, the vicar of st. paul’s church in lyons, france, is the “founding father” of the metric system. he proposed a decimal system of measurement in 1670. mouton based it on the length of one minute of arc of a great circle of the earth (now called a nautical mile, 1852 meters). he also proposed the swing-length of a pendulum with a frequency of one beat per second as the unit of length (about 25 cm). a pendulum beating with this length would have been fairly easy to produce, thus facilitating the widespread distribution of uniform standards. over the years, his work was revised, improved, and extended by a number of french scientists.

the political sponsor of weights and measures reform in the french revolutionary national assembly was the bishop of autun, better known as talleyrand. under his auspices, the french academy appointed several committees to carry out the work of developing a usable system of weights and measures for france. one of the committees recommended a decimalized measurement system based upon a length equal to one ten-millionth of the length of a quadrant of the earth’s meridian (i.e., one ten-millionth of the distance between the equator and the north pole).