| Levers/ Pulleys | ||
| #1 | Scissors and a teeter- totter are class 1 levers, true or false? | True |
| #2 | What is mechanical advantage? | How much easier and faster a machine makes your work. |
| #3 | Do you have a mechanical advantage when using a fixed pulley or movable pulley? | Movable pulley |
| #4 | Name two examples of a fixed pulley | - Window blinds - Window blinds - Clothesline |
| #5 | What are two ways pulleys can make life easier | - make it easier to pull a rope - change direction of a force - get more mechanical advantage |
| Pulleys | ||
| #1 | What are the two types of pulley? | Fixed and movable pulley |
| #2 | A single fixed pulley system has.. how many wheels and what is it attached to? | One wheel, which is attached to something high |
| #3 | Pulleys can be fixed or movable. Which kind of pulley reduces the effort needed to life the load? | Movable pulley |
| #4 | The more wheels you use, the less/more force you have to use to lift and object? | less |
| #5 | Explain what a pulley is- Include the parts of a pulley | is a wheel with two raised edges so that a rope or a string will run along the wheel without coming off. |
| Levers | ||
| #1 | Define lever effort | The amount of force used to move a load |
| #2 | True or False: In a class 1 lever system the fulcrum is in the middle? | True |
| #3 | The pivot or turning point of a lever is called? | Fulcrum |
| #4 | Define load | the weight of an object that is being moved |
| #5 | What are the three parts of a lever? | Fulcrum,load,effort |
| Mixing it up!!!! | ||
| #1 | What is one example of a movable pulley? | Crane, weight training machines |
| #2 | In a class 1 lever system the fulcrum is in the middle, true or false? | true |
| #3 | In a class 2 lever system is the lever in the middle? Yes or No | Yes |
| #4 | In a class 3 lever system the effort is in the middle, true or false? | true |
| #5 | What kind fo pulley can be used to bring a bucket of water up and down from a tree house? | fixed pulley |
| Be Brave!!!! Pick this category! | ||
| #1 | If you wanted to carry bricks what simple machine would you use? | A pulley |
| #2 | A golf club and tweezers are examples of a class 3 lever ,true or flase? | true |
| #3 | Why is a wheelbarrow and a nutcracker examples of class two levers? | The load is in the center |
| #4 | ||
| #5 | ||
| Final Question | |
| What happens to the amount of effort required to life a load as the load gets closer to the fulcrum? | The effort decreases. |