Quèstion 15 What term describes a consistent natural phenomenon for which there is an incomplete scientific explanation? O 1. scientific theory O 2. law of nature

QUESTION 33 1 p Which of the following is the correct order of wavelengths of the visible light spectrum starting with the color with the longest wavelength? O Orange, yellow, green, red, blue, indigo and violet Red, orange, yellow, green, blue, indigo and violet Violet, indigo, blue, green, yellow, orange and red Red, yellow, orange, blue, green, indigo and violet Red, indigo, violet, blue, green, orange and yellow QUESTION 34 Which of the following parts of the spectrophotometer converts light energy into electrical energy? O Photometric system Light source Monochromator Phototube Sample holder

QUESTION 6 Several previous mass extinctions during the history of the earth were the result of either global warming or cooling. What was the major factor that caused global temperatures to change so dramatically hundreds of millions of years ago? O A Changing atmospheric carbon dioxide concentration O B. The phases of the moon OC. The burning of fossil fuels by humans OD.Changes in the length of the day QUESTION 7 The increase in the Earth's temperature during the Paleocene Thermal Maximum (PETM) and our current human-driven global warming were/are both being driven by increasing atmospheric carbon dioxide concentration. However, what is a major difference between these occurrences of global warming? O A. One was caused by the Greenhouse Effect while the other wasn't. O B. Plate tectonics OC. Global temperature is rising much more quickly today than it did during the PETM OD. The earth stopping spinning on its axis during the PETM

QUESTION 4 The distance between Kings College (London) and the Canvendish lab (Cambridge) was O 50 miles 75 miles O 100 miles 3000 miles