| A | B |
|---|
| The force that pulls objects to Earth is ____ | gravity |
| Opposite pole of a magnet ____ | attract |
| A pyramid is strong because it has a wide ____ | base |
| A ramp is an example of a ___ ____ | inclined plane |
| A device that helps make work easier is a _____- | machine |
| A inclined plane is a ____ machine | simple |
| Because they are curved, ___ are used to help spread out weight | arches |
| Because they are not easily bent, ___ are used in buildings. | columns |
| Magnets have ___ poles | two |
| The base of any building that keeps it strong is the ____ | foundation |
