Fluids grade 7/8

Why do solids expand when they are heated?

• The particles get bigger

• The particles vibrate more and get closer together

• The particles stick together

• The particles vibrate more and take up more space

What does viscosity mean?

• How close the particles are together.

• How dense a fluid is.

• How easily a fluid flows.

• The amount of matter in a substance.

Another name for laminar flow

• Eddie flow

• Streamline flow

• Zig Zag flow

• None of the above

If an object sinks in a fluid, _____.

• the density of the fluid is greater than the density of the object

• the density of the fluid is equal to the density of the object

• the density of the fluid is less than the density of the object

• density has nothing to do with whether an object sinks or floats, only which state of matter the object is

Which is NOT a part of the particle theory?

• All matter is made of particles

• Particles do not have a definite shape

• Particles have empty spaces between them

• Particles have forces of attraction

an irregular, mixing flow pattern

• turbulent flow

• laminar flow

• Flow rate

• Stream flow

Which is not a factor that affects flow rate?

• the type of fluid that is flowing

• the force pushing on the fluid

• the amount of fluid in the container

• the size of the pipe or opening the fluid flows through

a measure of how easily a fluid's particles are able to slide past one another

• viscosity

• cohesion

• adhesion

• surface tension

the strong attraction among the particles that form the surface of a liquid

• viscosity

• cohesion

• adhesion

• surface tension

a measure of how strongly the particles of a fluid attract each other

• viscosity

• adhesion

• cohesion

• surface tension