Your Mom!
Just kidding.
The world's tallest buildinghttp://wiki.answers.com/wiki/Burj_Khalifa, is .82 kilometers tall. By comparison, Mount Everest is the word's tallest mountain and stands at 8.8 kilometers above sea level.
Objects closer to 1 kilometer are the height of Niagra Falls (1039 meters, or 1.039 kilometers).
anything that is about 4inches or 10cm
paper clip, a coin,an almond, a peach pit, an olive
milimeters, centemeters, decameter, meter, kilometer
phone
Objects that are inside your house and on you.
A natural made rock
Guitar.
Ball in flight, Players running.
nails, spoons, pots, pans, and screws
Anything that has a low mass. Those are usually small objects.
Insects, screws and nails, tubing are some examples.
Some examples of a molecules is water, tables, people, and objects that basically are made up of atoms which make molecules.