SCIENCE 8
Review Questions for Fluids Test – Viscosity
Mr. Birt
1. Fluids and non-fluids - know the properties of each
a. How are fluids and non-fluids alike?
b. How are they different?
c. What are some examples of each?
2. Science Inquiry
a. Define each of the following terms:
testable question, variable, independent variable, dependent variable, hypothesis,
fair test, controlled variable, apparatus, method, observations, source of error,
conclusion, application
b. Given an example of a testable question, what are the independent and dependent
variables, or the cause and effect? What would be an hypothesis based on the
testable question? What would be an hypothesis based on the independent and
dependent variables?
c. For each of your labs: Viscosity with Ramp, Viscosity with Two Towers (and paper
clips), 3 Factors That Affect Flow Rate, Density of Water, Density and Buoyancy,
Density Tower, Density and Buoyant Force – be able to give the independent and
dependent variables, hypothesis, two controlled variables, and two sources of error.
3. Viscosity
a. What is viscosity? What does high viscosity mean? What does low viscosity mean?
b. For the two viscosity labs, what were the indicators of viscosity (fluid flow rate and
paper clip drop time)
c. What is the formula for flow rate? How do you calculate it, given a distance an time?
d. What are two substances that viscosity is important for? What is the preferred
viscosity for each (high, low or moderate) and why?
4. States of Matter – Changes of state
a. What are the 3 states of matter?
b. What does each state do in container (in relation to the shape of the container)
c. What are the scientific terms and their definitions for the six changes of state?
5. Particle Theory of Matter (Use the PTM to explain each of the following.)
a. State the points of the PTM
b. Compare the three states of matter based on the distance between the particles in
each and the speed of the particles in each.
c. Know the Temperature, Heat and PTM “Quiz”
6. Factors That Affect Flow Rate
a. What 3 factors affect flow rate and how (based on the lab done in class)?
7. Density
a. Define mass, volume and density. Know lab equipment to find mass and volume.
b. Find volume of a regular shaped solid and an irregular shaped solid (displacement)
c. Find mass of a liquid
d. Find density of a solid or liquid
e. Use the magic triangle to find either volume, mass or density given the other two.
f. Know the units for volume, mass and density, and 1cm 3 = 1 mL.
g. Know density of water
8. PTM + Effect of Temperature on Density
a. Use PTM to explain what happens to particles, volume, mass and density when a
solid, liquid or gas is heated (or cooled).
9. Buoyancy
a. Define buoyancy
b. Know relationship between density and buoyancy (less dense floats)
c. State Archimedes’ Principle
d. Explain why an object floats (in terms of it volume, the volume of water displaced,
its mass, and the mass of the water displaced)
e. Explain the connection between mass of the object, mass of the water displaced,
and buoyant force for an object that sinks, floats or has neutral buoyancy.
f. What is neutral buoyancy?
10. Density and Buoyant Force
a. Give and explain the relationship between density and buoyant force
11. Pressure
a. Define pressure
b. Explain the relationship between pressure and surface area.
c. Give some examples from everyday life that demonstrate the relationship between
pressure and surface area
d. Explain pressure and the effects of heat on pressure using the PTM