What matters is matter

Matter and gravity are important factors in science. Matter is anything that has mass and volume. For instance, a TV, radio, or even yourself is all matter. On the other hand, some things that are not matter are light, sound, and electricity. Mass is the amount of matter in an object, remember mass does not change. Volume is the amount of space an object takes up. Scientists who study mass, volume and matter are known as Chemists. There are five states of matter. They are liquids, solids, gases, plasma, and a new one called Bose-Einstein condensates. Scientists can find the mass,volume, or density of an object by using a simple formula. The formula for finding density is mass/volume. The formula for finding mass is density x volume. And lastly, the formula for finding volume is mass/density. When finding the volume of an object you use the units centimeters cubed for a solid and milliliters for a liquid. Have you ever wondered why wood floats in water. This is because wood is less dense than water. Water is 1g/mL so in order for wood to sink it have to be more than 1g/mL. This scenario also happens with an ice cube and icebergs.
Gravity is also very important in science. Gravity is the force of attraction between all objects. It is the reason why we stay on the ground. For example, in ice skating it is hard to lift someone over your head because they weigh a lot. This would be different if this happened on the moon. On the moon there isn't any gravity, so people are weightless, therefore it would be very easy for someone to lift another person above their head. As another example, it takes a lot more fuel for a rocket to launch into the air on Earth because there is gravity. If the rocket was taking off from the moon it would be easier because there isn't any gravity. For this reason it wouldn't take a lot of fuel to launch the rocket. From learning about matter and energy I feel that I have gained a lot of knowledge. I have learned what is and isn't matter, why wood floats in water, a new state of matter along with the original four, and why people are weightless on the moon.

My sources...
http://www.chem4kids.com/files/matter_intro.html

http://www.thetech.org/exhibits/online/topics/54a.html