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Unit 2 L1 & L2
| Question | Answer |
|---|---|
| What is electricity? | |
| What is static electricity? | |
| What happens when you rub your feet on the carpet? | |
| What do opposite charges do? | |
| Why does Bill’s hair stand up when he touches the Van der Graaf generator? | |
| How does your laundry get static cling? | |
| How does a balloon show it has static electricity after you rub it on your hair? | |
| What are electrons? | |
| When you discharge the electrons from the static electricity generator, where do the electrons go? How do they get there? | |
| What does the third prong on an electric plug do? | |
| Why is it harder on a moist day to get a shock from static electricity? | |
| What do lightning rods do? | It attracts lightning and then directs the electrons into the ground. |
| Why is the car a safe place to be during a thunderstorm? | |
| What causes thunder? | |
| What causes lightning? | |
| Why is it not a good idea to take shelter under a tree in a thunderstorm? | Highest point attracts lightning. |
| What is a lightning rod? | A conducting pole that is attached to the top of buildings. |
| What causes static build-up on moving vehicles, such as cars and airplanes? | Friction between the moving vehicle and the air. |
| How can you prevent static charge build-up on your moving car? | Using a ground strip. |
| How is charge build-up reduced on airplanes when they are flying? | Needle-like protrusions on the airplane discharge extra electrons. |
| When you are fueling your car, what causes static build up? | Friction between fuel and nozzle. |
| What would you do to keep safe from an explosion while fueling your car? | Make sure to ground yourself before fueling. |
| What are three different methods for reducing charge build-up in a clothes dryer? How do they work? | 1) Wash items with the same material- same material cannot steal electrons. 2) Use dryer sheets - Dryer sheets coat clothing in wax, which creates less friction. 3) Take clothes out before they’re fully dry - Moisture absorbs static charge. |
| How would a humidifier in your home affect the static charge build-up? | Moisture from humidifier absorbs static charge. |
| When would you need to use a humidifier more: in the summer or the winter? Explain. | In the winter, there is less humidity in the air. |
| How does friction charge an object | The transfer of electrons that occurs when two substances are rubbed together. This results in the build-up of stationary electric charges on both objects. |
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