Part 1. Wave Interference Simulation a. Open the PhET simulation "Wave Interference." Explore the simulation to get a feel for the controls. Try to recreate the pictures shown in predictions in the discussion forum with the simulation. Take a screen shot of each. Briefly explain how you created these. b. Compare what you learned from the simulation to your ideas from your predictions. What ideas would you keep? What ideas would you change? (Did you notice the third bright spot right behind the wall in case 4.?) c. What happens to the pattern on the screen when the lights are brought closer to each other or farther apart? d. What happens to the pattern when the slits are brought closer and farther apart