G.E.D. Science Test Prepare Questions with Correct Answers

________ is done when force applied to an object moves the object : A. Transformation B .Biological Kindness C. Conservation D. Work - Answer-D. Work A windmill is used to create electrical energy. This change from one form of energy to another is called: A. Energy transformation B. Kinetic energy C. Mechanical energy D. Electrical energy - Answer-A. Energy transformation I put a Pop-Tart in the toaster. Electrical energy is transformed to thermal energy to make my Pop-Tart hot. Based on the Law of Conservation of Energy, once my Pop-Tart starts to cool, is energy lost?: A. Yes. All the energy was used in the conversion of energy. B. No. Energy cannot be created or destroyed. C. Yes. The Pop-Tart is no longer hot. D. No. Energy can be created, but it cannot be destroyed - Answer-B. No. Energy cannot be created or destroyed. At a constant velocity, a 5kg bag of cement is pulled straight up a 7m wall. How much work is done by the puller? (Gravitational pull is 9.8m/s2, W(J)=F(N)*D(m) A. 343 m/s2 B. 343 N C. 340 J D. 343 J - Answer-D. 343 What are the three phases or states of matter?: A. Liquid, Gas, Ice B. Liquid, Solid, Gas C. Gas, liquid, Slippery D. Liquid, Gas, hard - Answer-B. Liquid, Solid, Gas Iron+ Oxygen-Iron Oxide (Rust) 2Fe+30₂ - Fe₂O₃