How to Do Volume by Displacement


Hi, I'm Rachel, and today we're going to be going over how to do volume by displacement. So we like to use displacement when we're measuring a solid object and we have a beaker of a graduated cylinder and so this is what you're going to do. First fill the beaker with a bit of water. So here's the water and measure the amounts you have in the beaker already. Then you're going to drop the object in so say you have like a little rock, you drop it in so it's right here and the water is going to rise up right because the object is now in the beaker. So now the water rises up to here. Then after you've recorded this you drop it in and now you record it here and you measure. Then you're going to subtract the initial amount from the total amount right. So after the water rose and then subtract it from before the water rose. And that will give you the volume of this little object whatever it is. It's really cool. Make sure you always do it in units cubed. That's very important because it's volume so whether that's centimeters cubed or whatever make sure it's always units cubed. And that's how you find the volume using displacement. I'm Rachel and thank you for learning with me today.

Rachel Kaplove has worked as a professional private tutor since 2005. Specializing in Math and Science, she tutors students from the second grade level to advanced high school honors levels.