The Density Webquest - Erie City School District
The Density Webquest
Name: __________________________ Period: _______
Part A: Volume
1. What is the definition of volume?
a) What do you think is the key word in that definition (one word)?
2. What happens to the volume of an object if it is heated?
Finding the Volume of a regular shaped object
3. What is the formula for volume?
a) What is the volume of this object (show your work)? Measure it with a ruler in centimeters.
b) What should the units be?
Finding the Volume of an irregular shaped object
• An object that can not be measured by a rule
6. Practice:
a. What is the volume of the water in the graduated cylinder?
b. What is the volume of water after the object is placed in the graduated cylinder?
c. What is the volume of the object?
Part B: Mass
7. What is the definition of mass?
a) What do you think the key word is in the definition?
8. What is the mass of the of the star paper weight?
a. What is the mass in kg of a 500g block?
b. What is the mass in mg of a 500g block?
Part C: Density
9. What is the definition of density?
10. What is the formula for density (write all of them)? Remember the triangle method! It helps!
a. D=
b. M=
c. V=
11. Practice Problems (show work):
a) What is the density of a 75 g block of wood measuring 12 cm x 8 cm x 9 cm?
1. What’s the mass:
2. What’s the volume:
3. What’s the density (calculate it)
b) What is the mass of a 49 cm3 object with a density of 63 g/cm3?
1. What’s the volume?
2. What’s the density?
3. What’s the mass (calculate it)?
c) What is the volume of a 17 kg solid with a density of 0.05 kg/cm3?
1. What’s the mass?
2. What’s the density?
3. What’s the volume (calculate it)?
Buoyancy:
Draw the opposing force diagram: Buoyancy and Gravity
Ascend Hover
Sink
Buoyancy Webquest:
Go to the following Website:
Read through the material. Check out the link that is labeled “Buoyancy Basics.” Answer the following questions:
1. When you put a piece of wood in water, how do you know how much water it will displace?
2. Why would a piece of oak float deeper in water than a piece of pine?
3. What is the force that is working against the buoyant force?
Go through the Buoyancy Question, Boat-in-Pool Puzzler, and Balloon-in-the-Car Puzzler.
1. In the buoyancy question, what made the sub sink? Why?
2. Does a rock displace more water in a boat, or in water? Why?
3. Does a balloon go to the front of the car or the back of the car when the brakes are pressed?
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