Definitions
A force of attraction existing between any two masses.
Gravity.
Liquid.
The study of past human life as revealed by preserved relics.
Archaeology
We normally call this a ramp, making lifting easier to slide a load up an angle.
The positive particle of the atom.
Proton
The preserved remains of a once-living organism.
Fossil.
Gas.
The study of Earth's physical structure, its history, the processes acting on it, and the rocks of which it is composed.
Geology
Consisting of grooved wheel and rope, pulling on one end brings up the other. Combine multiple of these in a "block and tackle" giving a true mechanical advantage!
The pulley
The negative particle of the atom.
The electron.
The speed of an object in a given direction.
Velocity.
When freezing something, we cause matter to be in this state of matter.
Solid.
The study of life's history as revealed in the preserved remains of once-living organisms.
Paleontology.
This is actually just an inclined plane and a wheel and axle put together, but it's advantage is great for connecting pieces of wood!
The screw.
When enough water particles accumulate and fall as rain or snow, we call it this.
Precipitation.
An educated guess that attempts to explain an observation or answer a question.
Hypothesis.
This type of change occurs when atoms or molecules in a substance stay the same like shredding paper.
Physical Change.
The branch of science that deals with the physical universe beyond Earth's atmosphere.
Astronomy
This is a larger circle attached to a smaller cylinder, mostly known for its application on a vehicle but as many other advantages.
The wheel and axle.
When water is exposed to heat and turns into a gaseous state, we call the process this in the water cycle.
Evaporation.
An ancient form of paper, made from a plant of the same name.
Papyrus.
This type of change occurs when the type of molecules or atoms in a substance become different, i.e. burning paper.
Chemical change.
The study of weather.
Meteorology
Consisting of a bar and fulcrum to either multiply or redirect force. It is more than a see-saw!!
The lever.
Plants use this process to turn carbon dioxide, water, and the sun to make sugar and oxygen.
Photosynthesis.