FINDING DENSITY

This week we’ve benn looking at density. Density is a measurement of how solid something is. Specifically it is the mass per unit volume of a substance. If you have two objects of the exact same size (volume), the more dense object will weigh more than the less dense object.

So there are two things contributing to density:

1. 1  The mass of the atoms or molecules that makes up the material.
2. 2  The volume or amount of space the material takes up. If the molecules or atoms are “packed” in more closely, it will be more dense.

Density and buoyancy are closely related. A less dense substance will float on a more dense substance.

So to find out the density of an object we have to find its mass and its volume and make a division, as shonw in this video :

Reports

Whenever we finish our practices we must complete our reports and get conclusions of our experiences. In every report we have to fill the introduction and we must watch videos or look for some information through the internet with our ipads. As well as, we have to answer some questions and draw a picture of our practice.

We also prepare an imovie or a keynote to show you in our blog.

This is a hard work, as you can see!!

INTRODUCTIONS

And here you are the other members of our teams: