| Question |
Answer |
| What is effort? |
The work needed to move a load |
| What is force? |
A push or a pull on something to move it |
| What is a spring scale used for? |
To measure the effort needed to lift a load in newtons |
| What kind of pulley is attached to a structure? |
A fixed pulley |
| What is a problem with a fixed pulley? |
You are lifting the whole weight of the load |
| What is the load attached to in a movable pulley? |
The load is attached to the pulley |
| What is a problem with a movable pulley? |
You have to pull up to lift the load |
| What pulley system lets you pull down on the rope and cuts the weight of the load in half? |
Combined pulley |
| How do you find the mechanical advantage of a pulley system? |
You count the number of supporting ropes |
| What two pulley systems cut the weight of the load in half? |
Combined pulley and movable pulley |
| If the gear you turn goes clockwise, what direction does the second gear go? |
Counterclockwise |
| What direction does the effort force go in a fixed pulley? |
Pull down |
| What direction does the third gear in a gear train go if the first gear turns clockwise? |
Clockwise |
| If the gear you are turning is large, and the second gear is small, which gear turn faster? |
The small second gear |
| If the large gear has 20 teeth, and the small gear has 10 teeth, how many times will the small gear turn when the large gear turns once? |
Two times |
| If the gear you are turning is large and the second gear is medium, which gear turns slower? |
The large first gear |
| What is the name of gears that work on a flat surface? |
Spur gears |
| What is the name of gears when one is flat and the other is upright? |
Bevel gears |
Spanish 3
