IT’S TIME FOR... OPTICAL MINERALOGY TRIVIA!!RulesRound 1 – Question 1Round 1 – Question 2Round 1 – Question 3Round 1 – Question 4Round 1 – Question 5Round 1 – Question 6Round 1 – Question 7Round 1 – Question 8Round 1 – Question 9Round 1 – Question 10End of Round 1Slide 14Slide 15Slide 16Slide 17Slide 18Slide 19Slide 20Slide 21Slide 22Slide 23IT’S TIME FOR...IT’S TIME FOR...OPTICAL MINERALOGYOPTICAL MINERALOGYTRIVIA!!TRIVIA!!RulesRules Three roundsThree rounds 10 questions per round10 questions per round Pass answers to team to Pass answers to team to right for gradingright for gradingRound 1 – Question 1Round 1 – Question 1What type of energy is light?What type of energy is light?Round 1 – Question 2Round 1 – Question 2What property of light does the What property of light does the amplitude (A) control? amplitude (A) control?Round 1 – Question 3Round 1 – Question 3The index of refraction of a particular The index of refraction of a particular substance is a measure of what?substance is a measure of what?Round 1 – Question 4Round 1 – Question 4When the angle of incidence exceeds the critical angle of refraction, what will happen?Round 1 – Question 5Round 1 – Question 5What optical property does the mineral on the right (B) portray?Round 1 – Question 6Round 1 – Question 6A mineral in which the index of refraction (n) is the same in all vibration directions is said to portray what kind of optical properties?Round 1 – Question 7Round 1 – Question 7Name a type of crystal system that displays uniaxial optics as shown here.Round 1 – Question 8Round 1 – Question 8What is another name for the C-axis in a uniaxial indicatrix?Round 1 – Question 9Round 1 – Question 9In a positive uniaxial indicatrix will light vibrating in the ω direction be the fast or slow ray?Round 1 – Question 10Round 1 – Question 10ABCA mineral sectioned parallel to which plane (A, B, or C) in this crystal will show maximum birefringence?End of Round 1 End of Round 1 Pass your answers to the team on your Pass your answers to the team on your right for grading. right for grading.Round 1 – Question 1Round 1 – Question 1What type of energy is light?What type of energy is light?Electromagnetic RadiationElectromagnetic RadiationRound 1 – Question 2Round 1 – Question 2What property of light does the What property of light does the amplitude (A) control? amplitude (A) control? Intensity or brightnessIntensity or brightnessRound 1 – Question 3Round 1 – Question 3The index of refraction of a particular The index of refraction of a particular substance is a measure of what?substance is a measure of what?How much light is slowed down How much light is slowed down (relative to the speed of light in a vacuum (or air))(relative to the speed of light in a vacuum (or air))Round 1 – Question 4Round 1 – Question 4When the angle of incidence exceeds the critical angle of refraction, what will happen?The light will reflectRound 1 – Question 5Round 1 – Question 5What optical property does the mineral on the right (B) portray?(high) ReliefRound 1 – Question 6Round 1 – Question 6A mineral in which the index of refraction (n) is the same in all vibration directions is said to portray what kind of optical properties? IsotropyRound 1 – Question 7Round 1 – Question 7Name a type of crystal system that displays uniaxial optics as shown here.Hexagonal or TetragonalRound 1 – Question 8Round 1 – Question 8What is another name for the C-axis in a uniaxial indicatrix?Optic AxisRound 1 – Question 9Round 1 – Question 9In a positive uniaxial indicatrix will light vibrating in the ω direction be the fast or slow ray?Fast ray (lowest n)Round 1 – Question 10Round 1 – Question 10ABCA mineral sectioned parallel to which plane (A, B, or C) in this crystal will show maximum