Volume is the amount of space occupied by an object; it's an object's size, and it's
measured in three dimensions: the x, the y, and the z.
The volume of an object can be measured with a graduated cylinder.
1. Volume Video
Mass is a measure of matter. Everything has mass; all solids, liquids and gases have mass because they are made up of molecules.
We measure the mass of an object with a triple beam balance.
2. Mass Video
1. The wood cube and an iron cube have the same _____ because they are the same size.
2. The iron cube is heavier or has more ____.
3. The more closely packed the molecules, the higher the _______.
4. To determine density, we must first measure the ____ with a triple beam balance.
5. Next, we find the ______ which has units mL for a liquid or cm3 for a solid.
6. Why did the oil float on top of the water?
4. Density: Sink or float video + review
1. If something is able to float we say that it is _______.
2. How is it possible for a very heavy cruise ship to float?
2. How is it possible for a very heavy cruise ship to float?
5. Density: Why does oil float on water? video and Q/A
1. Density is the measure of the ____ of an object per unit ______.
2. A log of wood floats on water because it is _____ dense than water.
3. A rock sinks because it is ____ dense than water.
4. A balloon rises because it is less _____ than the surrounding air.
5. Oil is ____ dense than the surrounding water so it floats.