Displacement is used to measure the volume of irregular shaped objects.
What is displacement?
200
volume is the amount of room that matter takes up in an object.
What is volume?
200
Mass is how much matter is in you.The amount of mass will always stay the same.The gravitational pull on the moon is lower than that of the Earth.So you might weigh less on the moon.
How is mass different from weight?
200
Density is the measure of a quantity of mass in a given amount of room.
What is density?
200
Because weight is a measure of the gravitational pull on you.The gravity on the moon is lower than that of the Earth's.So therefore your gravitational pull or weight will be less.
Why is your weight on the moon lower that your weight on the Earth?
200
Displacement is often used to measure the volume of an irregular shaped object.You fill a graduated cylinder with water and drop your object in the water.Then subtract the previous water level from the new water level.