Forces and Machines QuizVersión en línea Test your knowledge on forces, machines, and their impact on our lives! por Jorge Sanz 1 What is a force? a A unit of energy. b A push or a pull on an object. c A type of machine. d A kind of motion. 2 What is a force? a A unit of energy. b A push or a pull on an object. c A type of machine. d A kind of motion. 3 What type of force occurs when two objects touch? a Magnetic force. b Contact force. c Gravitational force. d Non-contact force. 4 What does a pulley do? a Moves objects horizontally. b Stores energy. c Lifts heavy objects by changing the direction of force. d Increases speed of objects. 5 What energy does a steam engine use? a Wind energy. b Nuclear energy. c Solar energy. d Energy from coal. 6 What is an inclined plane? a A rotating wheel. b A fixed point of support. c A type of lever. d A ramp used to move objects up and down easily. 7 Who invented the printing press? a Guglielmo Marconi. b Johannes Gutenberg. c Thomas Edison. d Nikola Tesla. 8 What is mechanical energy? a Energy due to motion and position of an object. b Energy from heat. c Energy from light. d Energy from food. 9 What type of force is gravity? a Contact force. b Magnetic force. c Non-contact force. d Frictional force. 10 What do industrial robots do? a Perform difficult and dangerous jobs. b Clean houses. c Transport goods. d Cook meals. 11 What is one benefit of modern machines in health? a They reduce exercise. b They replace doctors. c They help us live longer and better. d They increase stress.
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