“INTRODUCTION TO ENERGY” WORKSHEET



“INTRODUCTION TO ENERGY” WORKSHEET Name______KEY______________________________ Date _______________ Period _______Part 1. The two basic types of energy Directions: Determine the best match between basic types of energy and the description provided. Put the correct letter in the blank. ___b___1. A skier at the top of the mountain(a) Kinetic Energy___b___2. Gasoline in a storage tank(b) Potential Energy___a___3. A race-car traveling at its maximum speed___a__4. Water flowing from a waterfall before it hits the pond below___b___5. A spring in a pinball machine before it is released___a___6. A match burningPart 2. Potential Energy.Directions: Underline the situation in each pair that has the greater amount of potential energy. A stretched or unstretched spring?A ticking or newly wound-up clock?A new battery in an unlit flashlight or in one which is lit?A roller coaster car at the top of a hill or at the bottom?A match before it is lit or a match while it is burning?Part 3. Kinetic energy.Directions: Underline the situation in each pair that has the greater amount of kinetic energy. A pole vaulter before jumping or in mid-air at the top of his jump?A bowling ball when your arm is all the way back or as it hits the pins?A baseball bat just before it is swung or right after it is swung?You before you get out of bed in the morning or you when you go to bed at night?A match before it is lit or a match while it is burning?Part 5. Forms of Energy ContinuedDirections: Match the energy form(s) to the description provided. A few questions may have more than one answer. ______a_______1. Falling rocks from the top of a mountain(a) Mechanical______d_______2. Release of energy from the Sun(b) Electrical______a_______3. Energy used to throw a baseball(c) Thermal______e_______4. Batteries(d) Electromagnetic______b_______5. The energy that runs a refrigerator(e) Chemical______f/c_____6. Nuclear fission reactors(f) Nuclear______d/g____7. Lightning and thunder from a storm(g) Sound______e_______8. Food before it is eaten Part 6. Transformation of EnergyDirections: Use the following forms of energy to fill in the table below: mechanical, electrical, thermal, electromagnetic, chemical, nuclear, and sound. The first one has been done for you.ORIGINAL ENERGY FORMFINAL ENERGY FORM(S)1. Electric motorelectricalmechanical2. A battery that runs a moving toy chemicalelectrical/mechanical3. A solar panel on the roof of a houseelectromagnetic electrical4. A nuclear power plant nuclearheat/electrical5. Gasoline powering a car chemicalthermal/mechanical6. A light bulb electricalelectromagnetic/heat7. Photosynthesis electromagnetic chemicalCalculations (Use your formulas and show ALL of your work)A 4 kg rock is rolling 10 m/s. Find its kinetic energy.200 JA 8 kg cat is running 4 m/s. How much kinetic energy does it have? 64 JA 4 kg bird is flying with a velocity of 4 m/s. What is its kinetic energy?32 JCalculate the potential energy of a 5 kg object sitting on a 3 m ledge147 JA rock is at the top of a 20 meter tall hill. The rock has a mass of 10 kg. How much potential energy does it have?1960 JCHALLENGE QUESTION: How high up is a 3 kg object that has 300 joules of potential energy?10.2 mFormula: Joules ÷ 9.8 kgCHALLENGE QUESTION: A rolling ball has 18 joules of kinetic energy and is rolling 3 m/s. Find its mass.4 kg1209675229870 Joules_____(velocity? ÷ 2)00 Joules_____(velocity? ÷ 2) Formula: ................
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