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C Fill in the blanks., friction, between surfaces., is the capacity to,do wprk., 1. Oiling reduces, 2 Enngy, Wood, petrol, coal or LPG are called ..., t Einergy from Lnd., produce electricity, km energy is used by plants to produce food., is used to, and..ate, S., D. Match the following., 1. Force which attracts iron and steel Magnetic Force. Energy, b. Hydropower, oil, Energy, Alydropowar, 2. It reduces friction, 3. It can change the state of matter, 4. Energy derived from force of moving water, C. Magnetic force, Fuel, 5. Compressed Natural Gas Fuel, e., Oil

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RWrite T for True or F for False statements., 1. Things thrown up will come down, even if there is no gravity., False, 2. Lying down on the bed is work. False, ..., . The energy of fuels comes from the Sun. True, 4. Energy is available in various forms. True, 3. Fuels have stored energy in them. Trul, ...

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Exercises, Objective Type Questions, A., Choose the correct option., In which of these cases is a force being applied?, Lifting a book, a., b. Stretching a string, c. Kicking a football, Ld All of these, 2. Walking on slippery ground is difficult because there is:, very little gravity between us and the ground, a., b. very high gravity between us and the ground, A very little friction between our feet and the ground, d. very high friction between our feet and the ground, 3. In which case is the highest work done?, a. Pushing a light chair by 10 metres, b. Pushing a light chair by 20 metres, C. Pushing a heavy table by 10 metres, 4 Pushing a heavy table by 20 metres, 4. In which case is energy required?, b. Change ice to water, a In moving something, ut. All of these, C. Change water to water vapour, 5. Which of these is not a form of energy?, b. Light, a., Heat, d. Electricity, Water, 0. Which of them has stored energy?, b. Air, a. Water, d. All of these, La Log of wood, Ealse statements.