Let s Get Ready To Play Some

Let’s Get Ready To Play Some. . .

JEOPARDY

Jeopardy Board Final Jeopardy Conversions & Equations Renew & Non -Renew Solving Problems Thermal Energy 100 100 200 200 300 300 400 400 500 500

Conversions / Equation? - 100 If you are given mass and height what are you trying to solve for AND what equation should you use? Board Answer

Conversions / Equation? - 100 You are solving for GPE = mgh Gravitational Potential Energy = Mass x 9. 8 m/s 2 x Height Board

Conversions / Equation? - 200 Which process best shows the conversion of solar energy to chemical energy? A B C D Prevailing winds causing windmills to spin Green plants making their own food Uranium producing heat to make steam Tides generating electricity Board Answer

Conversions / Equation? - 200 Which process best shows the conversion of solar energy to chemical energy? A B C D Prevailing winds causing windmills to spin Green plants making their own food Uranium producing heat to make steam Tides generating electricity Board

Conversions / Equation? - 300 If you are given height and weight what are you trying to solve for AND what equation should you use? Board Answer

Conversions / Equation? - 300 5 N You are solving for PE PE = wh 3 meters Board

Conversions / Equation? - 400 Jack is mowing the grass with a gasoline lawn mower while listening to his i. Pod. Of the 6 forms of energy, which form is NOT represented in this example? Board Answer

Conversions / Equation? - 400 Mechanical - Jack is mowing (walking) Radiant – Sound from lawnmower, music Chemical – gas, food, battery Heat – Motor heating up Electrical – i. Pod (electrical to sound) Nuclear - NONE Board

Conversions / Equation? - 500 If you are given mass and velocity what are you trying to solve for AND what equation should you use? Board Answer

Conversions / Equation? - 500 You are solving for KE KE = mv 2 2 Or KE = 1/2 mv 2 Board

Renewable / Non-Renewable - 100 Energy from the earth Advantage: endless supply in certain areas Disadvantage: only works in certain areas Board Answer

Renewable / Non-Renewable - 100 Geothermal Uses heat energy from under the earth’s surface in volcanic regions. Board

Renewable / Non-Renewable - 200 Energy from fossil fuels Advantage: ready made fuel Disadvantage: contributes to acid rain Board Answer

Renewable / Non-Renewable - 200 Oil and Coal from plants and animals from millions of years ago Board

Renewable / Non-Renewable - 300 Name 1 advantage and 1 disadvantage of Hydroelectric Energy Board Answer

Renewable / Non-Renewable - 300 Advantages: Creates water reserves and energy supplies Disadvantages: Extremely expensive and can force flooding in some areas Board

Renewable / Non-Renewable - 400 Name 1 advantage and 1 disadvantage of Disposable Batteries Board Answer

Renewable / Non-Renewable - 400 Advantages: Long shelf life, Cheap and Common, Operates a long time, Good at resisting leaks, Easily replaceable Disadvantages: Poor performance under heavy use, Possible Explosions, Environmentally unsafe, Use and replace Board

Renewable / Non-Renewable - 500 Name 3 of the 4 Renewable Energy Sources and 3 of the 4 Non-Renewable Energy Sources we discussed in class. Board Answer

Renewable / Non-Renewable - 500 Renewable Hydroelectric Wind Solar Geothermal Board Non-Renewable Coal Oil Natural Gas Nuclear

Solving Problems - 100 When solving GPE = mgh and you are given 100 kg and 50 m, what is the g? Board Answer

Solving Problems - 100 Acceleration of objects due to gravity on earth is Board

Solving Problems - 200 A car is traveling with a velocity of 6 m/s and has a mass of 120 kg. Calculate the energy of the moving car. Board Answer

Solving Problems - 200 Given Unknown Equations Needed Substitute including units Solution KE = 120 kg (6 m/s)2 M = 120 kg v = 6 m/s 2 KE KE = mv 2 2 KE = 120 kg (36 m/s 2) 2 KE = 4, 320 kg. m/s 2 2 Board KE = 2160 Joules

Solving Problems - 300 Roman lifts a 18 N shot put is lifted to a height of 2 meters in the shot put ring before he begins this spin to release the shot. What is the energy of this object? Board Answer

Solving Problems - 300 Given W = 18 N h = 2 m Board Unknown Potential Energy Equations Needed PE = wh Substitute including units PE = 18 N x 2 m Solution PE = 36 Joules

Solving Problems - 400 A 100 kg roller coaster is sitting on top of a hill that is 15 meters high. What is the roller coaster’s energy? Board Answer

Solving Problems - 400 Given M = 100 kg h = 15 m Unknown GPE Board Equations Needed GPE = mgh Substitute including units GPE = 100 kg X 9. 8 m/s 2 x 15 m Solution PE = 14, 700 Joules

Solving Problems - 500 What has more energy, Object A with a 20 kg mass moving at 9 m/s or Object B with a 40 kg mass 25 m above the floor? This can be tricky if you don’t pay attention…. Board Answer

Solving Problems - 500 Object A with a 20 kg mass moving at 9 m/s KE = ½ mv 2 KE = (. 5) (20 kg)(9 m/s) 2 KE = (10 kg) (81 m/s 2) KE of Object A = 810 J Object B with a 40 kg mass 25 m above the floor GPE = mgh GPE = (40 kg)(9. 8 m/s 2) (25 m) GPE of Object B= 9800 J OBJECT B has more ENERGY Board

Thermal Energy- 100 A man who was sleeping wakes up because he hears the smoke alarm go off in his house. Before opening the bedroom door, the man feels the door to see whether it is warm. He is assuming that heat would be transferred through the door by — Board Answer

Thermal Energy - 100 A man who was sleeping wakes up because he hears the smoke alarm go off in his house. Before opening the bedroom door, the man feels the door to see whether it is warm. He is assuming that heat would be transferred through the door by — Conduction Board

Thermal Energy - 200 Heat convection occurs in gases and liquids. Heat convection does not occur in solids because solids are unable to — A B C D absorb heat by vibrating transfer heat by fluid motion emit radiation by reflecting light exchange heat by direct contact Board Answer

Thermal Energy - 200 Heat convection occurs in gases and liquids. Heat convection does not occur in solids because solids are unable to — A B C D absorb heat by vibrating transfer heat by fluid motion emit radiation by reflecting light exchange heat by direct contact Board

Thermal Energy - 300 Water is heated in a beaker. A difference in the density of the cooler water and the warmer water causes— A B C D conduction of heat convection currents insulation at the top level radiation from bottom to top Board Answer

Thermal Energy - 300 Water is heated in a beaker. A difference in the density of the cooler water and the warmer water causes— A B C D conduction of heat convection currents insulation at the top level radiation from bottom to top Board

Thermal Energy – 400 A solar heater uses energy from the sun to heat water. The heater’s panel is painted black to — A B C D improve emission of infrared radiation reduce the heat loss by convection currents improve absorption of infrared radiation reduce the heater’s conducting properties Board Answer

Thermal Energy - 400 A solar heater uses energy from the sun to heat water. The heater’s panel is painted black to — A B C D improve emission of infrared radiation reduce the heat loss by convection currents improve absorption of infrared radiation reduce the heater’s conducting properties Board

Thermal Energy - 500 Wood chips, foam and wool may be categorized as: Board Answer

Thermal Energy - 500 Wood chips, foam and wool may be categorized as: Insulators Board

Final Jeopardy Category Board

Final Jeopardy Question At which point is the ball’s potential energy greatest? At which point is the ball’s kinetic energy greatest? Answer

Final Jeopardy Question At which point is the ball’s potential energy greatest? PE – At Position 2 At which point is the ball’s kinetic energy greatest? KE – At Position 3 Board