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G4 - Energy Transfer
Energy Transfer: Collisions and Elctricity
| Question | Answer |
|---|---|
| How does the speed of an object affect the amount of energy it has? | Faster-moving objects have more energy. |
| What happens to energy when two objects collide? | Energy is transferred between the objects, changing their motion. |
| How can a collision change the motion of objects? | It can change their speed, direction, or both. |
| Where does some energy go during a collision besides the objects? | Into the surrounding air as heat and sound. |
| How is sound produced during a collision? | Energy transfers to the air, causing vibrations we hear as sound. |
| What are different ways energy can move from place to place? | Through motion, sound, light, and electric currents. |
| How does energy move through electric currents? | Moving electric charges carry energy through a circuit. |
| What can electrical energy be transformed into? | Light, heat, sound, or motion. |
| How can motion be used to generate electrical energy? | Moving parts (like turbines) convert motion energy into electrical energy. |
| What does it really mean to “produce energy”? | It means converting stored energy into a usable form. |
| How does light transfer energy? | Light carries energy from one place to another without needing matter. |
| When is energy present in a system? | When there is motion, light, sound, or heat. |
| Why doesn’t all energy stay in moving objects after a collision? | Some energy is transferred to heat and sound. |
| How can you tell energy was transferred in a collision? | By observing changes in motion, sound, or temperature. |
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