Particle Power
According to the particle model, all matter is made of these tiny things.
What are particles?
This state of matter has a fixed shape and a fixed volume.
What is a solid?
This is the mathematical formula used to calculate density.
What is Mass divided by Volume?
An object that floats is said to have this type of buoyancy.
What is positive buoyancy?
These types of tools use compressed air to do work.
What are pneumatic tools?
The particle model says that particles are always doing this, even in a solid.
What is moving/vibrating?
This state of matter takes the shape of its container but has a fixed volume.
What is a liquid?
This is the standard SI unit used to measure mass.
What are grams?
This is the downward force acting on an object in water.
What is gravity?
Fish use this organ to change their density and move up or down in the water.
What is a swim bladder?
This exists between all particles, even if we can't see it.
What is empty space?
This state of matter is the easiest to compress because its particles are far apart.
What is a gas?
These are the two most common SI units for measuring volume.
What are Litres and Millilitres?
This is the upward force that fluids exert on an object.
What is the buoyant force?
This is why oil floats on top of water.
What is because it is less dense than water?
Particles in a pure substance (like pure gold) are always this.
What are the same?
Particles in this state can only vibrate in fixed positions.
What is a solid?
If an object has a mass of 10g and a volume of 5mL, this is its density.
What is 2g/mL?
This is what we call it when an object neither sinks nor floats, but hovers in the middle.
What is neutral buoyancy?
In a hydraulic system, this state of matter is used because it is almost impossible to compress.
What is a liquid?
Adding this to a substance makes the particles move faster and spread apart.
What is heat/thermal energy?
These are the two states of matter that are considered "fluids" because they can flow.
What are liquids and gases?
If two objects have the same volume, the one with more mass will have a density that is greater.
What is higher/greater?
An object will sink if its density is higher than that of water.
What is the density of the fluid/water?
This is why a heavy steel ship can float while a small steel nail sinks.
What is because the ship is filled with air, lowering its average density?)