6236914
Descripción
Fichas por Rawan Ibrahim, actualizado hace más de 1 año
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Creado por Rawan Ibrahim
hace alrededor de 8 años
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| Pregunta | Respuesta |
| How do Ramps make climbing easier? | They reduce the effort force needed. |
| How do ramps do this? | They made you travel over a longer distance. |
| In order to use less force effort climbing a mountian, what do you have to do? | You have to travel a greater distance to make it easier. |
| What is a ramp? | An inclined plane used to help lift an object. |
| What is an inclined plane? | A simple machine that reduces the effort needed to lift a load by increasing the distance it acts |
| What are wedges? | They are double inclined planes. |
| What do wedges do? | ,They are used to split objects because they change the directions of the force by 90 degrees and increase its size. |
| What happens when an axe is pushed downwards on a piece of wood? | The wedge of the axe head pushes the wood apart. |
| What are some examples of wedges? | Pins, needles, nails, doorsteps, your incisors. |
| Does a wedge change the direction of a force or speed it up? | It changes the direction of a force. |
| What happens when the inclined edge of the wedge is longer and the axe is sharp? | They longer the wedge and the sharper the axe, the easier it is to cut the wood. |
| Why are ramps use in buildings? | They are used to make it easier to deliver goods to shops and easier for people with wheelchairs or prams to enter the shop. |
| How do you find the mechanical advantage of a ramp? | |
| Give some examples where zips can be found. | Clothing, purses, wallets, sleeping bags, suitcases, handbags, backpacks and pencil cases. |
| What does a zip consist of? | Two sets of interlocking teeth that are very strong when fastened. |
| How many wedges does the slide of the zipper use to zip up and unlatch something? | It uses three wedges. One of each side of the teeth and one in the middle used for opening the teeth. |
| What is a screw? | It is a spiral-shaped inclined plane. |
| What is it designed to do? | It is designed to cut through another substance. |
| How is using a screwdriver using less force than hammering it into the piece of wood | It is because as you are turning the screwdriver, you are moving the screw over a larger distance that makes it much more easier than if it were hammered directly into the wood. |
| What is the thread? | It is the spiral inclined plane around a metal screw. |
| What is the pitch? | The distance between adjacent threads on a screw. |
| Would is be easier to use a screw with a small pitch or a large pitch? | The smaller pitch because you need to turn it over many times by the screwdriver with less force. The one with the larger pitch requires less turns but more effort. |
| Hope you learned something :-) |
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