11 months ago
Last edited at 7:37PM on 1/3/2013
Wow-- there are some really bad answers here. So mass is 'how much' material you have. It has nothing to do with 'area taken up'. Usually we measure mass by checking somethings weight; a gram of mass weights one gram on earth. But on the moon a gram of mass would weigh less (because of less gravity), and is space it would weight nothing -- but in both cases its MASS is still one gram despite what gravity is.
olpaint is right that mass can be converted to energy -- but we are not usally talking about energy when we use the word Mass. However his comment would make a nice paragraph to add in the end.
E = mc2, so that means mass is stored energy, so mass and ernergy, are the same. Energy equals mass times the speed of light squared. research ask. com, science catagory, for more detailed explanations and examples. it will help with your essay.
Well truthfully their are different types of mass. Inertial mass is how much and object is resistant to acceleration. Gravitational mass is how to calculate the effect an objects gravity has on other objects around it. Or the effect of gravity on that object. In everyday science "mass" generally means how much matter is contained in an object. But to the everyday public mass is usually a reference to how much something weighs. That should get you started...