difference between weight, mass, volume and density
Answers
Answer:
a. Weight is the force required to counteract the acceleration of gravity on an object.
b. Mass is the resistance of an object to acceleration by a force.
c. Volume is the 3-dimensional space occupied by and object or other defined 3-dimensional region.
d. Density is the mass of object or the sum of all masses in a 3-dimensional region, divided by the object or region's volume.
Answer
Weight
Weight refers to the pull of gravity on an object. Because gravity changes throughout the solar system from planet to planet, an object weight's doesn't remain constant. For instance, someone who weighs 185 lbs. on Earth would weigh 68.45 lbs. on Mercury and 432.9 lbs. on Jupiter. This is because gravity and weight are directly related, in that as the force of gravity increases or decreases, so does an object's weight.
Mass
Mass refers to the amount of matter that an object -- whether liquid, gas or solid -- contains. It's generally measured in kilograms and grams, and it's a constant quantity that doesn't change, regardless of where an object resides. In particular, an object's mass remains the same whether it's on the moon, on Earth, on Saturday or even if it's just floating through space. In addition, mass is independent of size, meaning that though a bowling ball and soccer ball are about the same size, the bowling bowl has a greater mass.
Volume
Volume refers to the amount of space that an object takes up. Liquid volumes are measured in literals or milliliters; solid volumes are measured in meters cubed or centimeters cubed -- both of which are equal. To measure a solid object's volume, scientists place the object in a container of water and then measure how many milliliters it displaces. They then convert that to centimeters cubed using the equation 1 mL = 1 cm^3.
Density
Density is the mass of object or the sum of all masses in a 3-dimensional region, divided by the object or region's volume.
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