Energy Stores Worksheet Task: Complete the missing gaps and circle the correct word (more/less) in each of the situations below. 1. A camping stove burns gas, which is a fuel. Before: What do we have? Unburnt f____, more/less o________. Cold soup. Thinking about energy After: More/less energy in the c________ energy store. More/Less f____, more/less c_______ d________ and water. Hot soup (and slightly hotter air). More/less energy in the c________ energy store. More/Less energy in the t________ energy store. More/less energy in the t_________ energy store. 2. Driving at a steady speed. What do we have? Thinking about energy Before: After: Colder car and s___________, more/less petrol and o________, more/less c_____ d______ and water. Warmer car and s___________, more/less petrol and o________, more/less c_____ d_________ and water. More/less energy in the c________ energy store of the petrol and oxygen. More/less energy in the c__________ energy store of the petrol and oxygen. More/less energy in the t________ energy stores of the car and s____________. More/less energy in the t__________ energy stores of the car and s____________. CHALLENGE: Bouncing a ball. Before: After: What do we have? Thinking about energy Key words: gravitational potential energy store, thermal energy store, surroundings, warmer, cooler, energy. ANSWERS 1. A camping stove burns gas, which is a fuel. Before: What do we have? Unburnt fuel, more oxygen. Cold soup. Thinking about energy After: More energy in the chemical energy store. Less fuel, more carbon dioxide and water. Hot soup (and slightly hotter air). Less energy in the chemical energy store. Less energy in the thermal energy store. More energy in the thermal energy store. 2. Driving at a steady speed. What do we have? Thinking about energy Before: After: Colder car and surroundings, more petrol and oxygen, less carbon dioxide and water. Warmer car and surroundings, less petrol and oxygen, more carbon dioxide and water. More energy in the chemical energy store of the petrol and oxygen. Less energy in the thermal energy stores of the car and surroundings. Less energy in the chemical energy store of the petrol and oxygen. More energy in the thermal energy stores of the car and surroundings. EXTENSION: Bouncing a ball. What do we have? Thinking about energy Before: After: Ball lifted up, cooler ball and surroundings. Ball at the top of the first bounce, warmer ball and surroundings. More energy in the gravitational potential energy store of the ball. Less energy in the thermal energy stores of the ball and surroundings. Less energy in the gravitational potential energy store of the ball. More energy in the thermal energy stores of the ball and surroundings.
