With this! if you've done this project then ! science 7b- reason for the seasons!

analyzing your data
1. use the data table below to record the number of lighted squares.
2. count the approximate number of squares inside each light outline. record your counts in the data table below. note: for partial squares, estimate how much of the square is included. for example, if it looks like one-fourth of the square is included, add 0.25 to your total. if it looks like half of the square is included, add 0.5 to your total. (use decimals, not fractions.)

data table: number of lighted squares

degree of tilt
0º
(green)
10º
(blue)
20º
(purple)
30º
(orange)
40º
(black)

# of squares in outline

questions & conclusions
answer the questions below:

1) identify the independent variable in this experiment.

2) identify the dependent variable in this experiment.

3) identify two constants in this experiment.

4) how did the number of squares inside the outline change as the degree of tilt increased?

5) how did the brightness or intensity of the light change as the degree of tilt increased?

6) explain how this demonstration models the way in which the intensity of sunlight shining on earth changes over the course of the year. be detailed in your explanation.

7) which degree of tilt (0-green, 10-blue, 20-purple, 30-orange or 40-black) produced light similar to what north america experiences in summer? explain your answer.

8) what would be the effect on the seasons and the northern and southern hemispheres if earth were not tilted? explain your answer