1) The energy that is stored in an object due to its position or configuration, such as a stretched spring or a charged battery is ------------------. a) kinetic energy b) potential energy c) thermal energy d) electrical energy 2) Energy spreading out from a bright object is --------------- energy. a) thermal b) elastic (strain) c) sound d) light 3) Energy possessed by a stretched or squashed object is ----------- energy. a) thermal b) elastic (strain) c) sound d) light 4) What is the main energy transfer for rolling ball from the high rank to floor? a) Electrical → light b) Mechanical → potential energy c) Gravitational potential → kinetic store d) Chemical energy → kinetic store 5) Which is the main energy transfer in an electric lamp? a) Electrical → light b) Light → electrical c) light → kinetic d) Light → thermal 6) Which two energy transfer are contained in the figure? a) light and chemical b) sound and electrical c) light and kinetic d) sound and gravitational potential 7) Write in the three types of energy involved in turning on and using the flashlight. a) electrical, sound, light b) chemical, electrical, light c) electrical, sound, heat d) chemical, light, sound 8) What is the useful energy change for a car that uses gasoline for movement? a) Chemical to light b) Kinetic to chemical c) Chemical to kinetic d) Kinetic to heat 9) Wind turbines are used to generate electricity. What is the useful energy transfer in a wind turbine? a) Chemical to kinetic b) Kinetic to electrical c) Electrical to kinetic d) Kinetic to chemical 10) As the wave travels, the energy in the wave---------. a) stays the same b) increases c) dissipates d) goes slower 11) Which of the following energy can be stored for a long time. a) thermal b) gravitational potential c) light d) sound 12) Energy transferred from vibrations is---------. a) sound energy. b) chemical energy. c) electrical energy. d) kinetic energy. 13) Find the percentage efficiency form given Sankey diagram of a bus engine. a) 25% b) 35% c) 45% d) 54% 14) 14. Energy arrives from the Sun, goes through a number of -----------, then ------------------. a) conversions, radiates back into space b) conservations, transfer c) radiations, transfer d) conversions, stored in objects 15) ------------- is energy from beneath Earth’s surface. a) Tidal power b) Geothermal energy c) Hydrogen power d) Hydroelectric power 16) Which one is non-renewable energy? a) Geothermal energy b) fossil fuels c) hydropower d) Solar 17) In a wood fire, 70% of the chemical energy in wood is changed to thermal energy. How many percent of chemical energy is waste? a) 20% b) 30% c) 50% d) 70% 18) How much work can a 7.0 kg mass do if it is 2.0 k m above the ground? a) 1300 J b) 130 k J c) 30000 J d) 137.2 k J 19) Which of given energies tend to be dissipated? a) sound, light, electric b) chemical, heat, light c) light, heat, sound d) heat, potential, sound 20) A 2,000.0 kg car that is traveling at 70.0 km/h. How much work must be done to stop this car? a) 313 k J b) 373 J c) 37.8 k J d) 378 k J

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