Timeline DIrections

PART 1: Timeline

1. In groups of 1-3... REQUIREMENTS VARY BASED ON NUMBERS IN THE GROUP -- see the rubric below.

  • Place the dates of the major contributions toward the modern atomic theory on their timeline while maintaining the proper spacing. The timeline should be scaled like the axis on a graph.
    • At each required philosopher/scientist on the timeline, label each date with…

a) the philosopher/scientist’s name

b) a brief description of his contribution

c) a picture/drawing of the philosopher

d) a picture/drawing of his model of the atom or his contribution to the modern atomic theory

e) labels should be neatly typed, cut out, and glued onto the poster board

    • All timelines should have a title.

Include (at least) the following philosophers:

NEATNESS AND CREATIVITY COUNT.

*Einstein info --- The third Einstein paper of 1905 concerned the movements of tiny particles floating in a liquid or gas. This effect has been seen earlier by the Scottish plant expert Robert Brown. It was known as Brownian motion. Einstein’s paper on Brownian Motion confirmed the atomic theory of matter. This is viewed by many as the first proof that atoms actually exist.

To Meet the Standards:

*** Groups of 1: Include the bold (red) people above.

*** Groups of 2: Include the italicized (red and blue) people above

*** Groups of 3: You must research an additional 4 people (from the green) that were instrumental in developing the atomic theory.

PART 2: Atomic Theory Essay

Write a 3-5 paragraph essay discussing the atomic theory and how it has changed over time. Include specific supporting data with names and dates to highlight key changes. Explain how scientific theories, specifically the atomic theory, have evolved over time.