What type of energy is being used in a pulley system?

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Presentation transcript:

What type of energy is being used in a pulley system? Question #1 What type of energy is being used in a pulley system? Answer: mechanical

Question #2 Answer: Heat or thermal A car engine can’t have an efficiency of 100% because some of the mechanical energy is converted to energy by friction. Answer: Heat or thermal

potential: point W kinetic: point X Question #3 Where on the roller coaster does the car have the most potential energy and most kinetic energy? Answer: potential: point W kinetic: point X

Question #4 Fill in the blanks: Answer: KE: depends on mass and speed Kinetic energy depends on mass and . Potential energy depends on mass and . Answer: KE: depends on mass and speed PE: depends on mass and height

A light bulb converts energy to and energy Question #5 A light bulb converts energy to and energy Answer: converts electrical energy into light (electromagnetic) energy and heat (thermal) energy

Question #6 What is the energy conversion when a plant goes through the process of photosynthesis? Answer: Light (EM) energy is converted to chemical energy (sugar) (100 points)

What form of energy do foods, batteries and gasoline contain? Question #7 What form of energy do foods, batteries and gasoline contain? Answer: chemical energy

Law of Conservation of Energy Question #8 Which scientific law explains why you have the same total amount of energy at every point on a roller coaster? Answer: Law of Conservation of Energy

Joule, calorie, kilowatt hour Question #9 Name three units used to measure work and energy. Answer: Joule, calorie, kilowatt hour

Renewable: left side/ nonrenewable: right side Question #10 Name one renewable and one nonrenewable source of energy. Answers: Renewable: left side/ nonrenewable: right side

Match the definition to the form of energy it describes: Question #11 Match the definition to the form of energy it describes: Energy stored in the nucleus of an atom Energy produced by moving electrons Energy stored in the chemical bonds of molecules Energy that travels in waves (ex. UV rays, visible light) Answers: Nuclear b. electricity c. chemical d. radiant/light/electromagnetic

chemical to mechanical Question #12 What is the energy conversion when gasoline is burned to make a car move? Answer: chemical to mechanical

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