ࡱ> LNK` bjbj E;7,PPPPd,,\$#######$%hz'$$i $##:+#,T# P\P@W# #,$0\$a#R(E(#(#($$\$,,,$ P,,,P,,, Why Does the Tilt of the Earth Affect the Seasons? Name__________________________Period____Date_______________ We have seen that the 23.5( tilt of the earth causes the earth to experience seasons. However, there is not a significant difference in the distance for sunlight to travel to the northern vs. southern hemispheres simply due to the tilt of the earth. What is it about the tilt that causes the seasons to occur? Objective: To determine why the tilt of the earth affects the seasons. Materials: Flashlight Paper towel/toilet paper tube Procedure: Shine your flashlight through the paper towel tube onto a separate piece of paper. First, hold the flashlight/tube perpendicular to the paper, about 5-10 cm above the paper. Draw an outline of the pattern the light makes on the paper. Now, shine the flashlight/tube at a slight angle from perpendicular on a different area of the paper, keeping the height of the flashlight the same. Draw an outline of the pattern the light makes on the paper. Finally, shine the flashlight/tube at a large angle from perpendicular on a different area of the paper, keeping the height of the flashlight the same. Draw an outline of the pattern the light makes on the paper. Clean up your lab area and answer the following questions. Questions: Was there a difference in the shape of the light when shone perpendicular and at an angle?____________ Did the intensity of the flashlight change during the experiment?___________________ Based on this part of the experiment, explain one reason tilt causes seasons. Now, look at the diagram below. What season does it represent?_____________________________ Based on this diagram, what is a second reason tilt affects the seasons? 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