Density(g/cm 3 )

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Wednesday, March 23, 2016
Wednesday, March 23, 2016
Homework is written in Blue.
Complete the Warm-up by Yourself
Always Write in Complete Sentences
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Read Page 46
What is volume?
What tool is used to measure the
volume of a liquid?
How many milliliters are in 1 cubic
centimeter?
How are milliliters related to cubic
centimeters?
You have 5 minutes.
•3rd period
•Grading your science fair journal –
•Mix-It-Up at Lunch
Name:
Title of Science Fair Experiment
Outline for Science Fair Project
A. Topic
Due Date: November 6, 2009
B. What Can Be Measured About the Topic (Quantitative)?
Due Date: November 6, 2009
C. Scientific Question – How does _______ affect _______?
Due Date: November 10, 2009
D. Independent (Manipulative) Variable
Due Date: November 11, 2009
1.
2.
3.
4.
5.
E. Dependent (Responding) Variable
Due Date: November 11, 2009
F. Hypothesis – If…, then…because…
Due Date: November 12, 2009
Period:
Name:
Title of Science Fair Experiment
Period:
Outline for Science Fair Project
A. Topic
Due Date: November 6, 2009
Trebuchet Catapult
B. What Can Be Measured About the Topic (Quantitative)?
Due Date: November 6, 2009
The distance a trebuchet can launch a golf
ball.
C. Scientific Question – How does _______ affect _______?
Due Date: November 10, 2009
How does the mass of the counterweight affect the
distance a trebuchet can launch a projectile?
D. Independent (Manipulative) Variable
Due Date: November 11, 2009
The mass of the counterweight
1.
2.
Due Date: November 6, 2009
The distance a trebuchet can launch a golf
ball.
C. Scientific Question – How does _______ affect _______?
Due Date: November 10, 2009
How does the mass of the counterweight affect the
distance a trebuchet can launch a projectile?
D. Independent (Manipulative) Variable
Due Date: November 11, 2009
The mass of the counterweight
1. 2.5 lbs = 5.5 kilograms
1.
2. 2. 5.0 lbs = 11 kilograms
3. 3. 7.5 lbs = 16.5 kilograms
4.
5. 4. 10 lbs = 22 kilograms
5. 12.5 lbs= 27.5 kilograms
E. Dependent (Responding) Variable
Due Date: November 11, 2009
The distance a trebuchet can launch a projectile
D. Independent (Manipulative) Variable
Due Date: November 11, 2009
The mass of the counterweight
1.
2.5 lbs = 5.5 kilograms
1.
2. 2. 5.0 lbs = 11 kilograms
3. 3. 7.5 lbs = 16.5 kilograms
4.
5. 4. 10 lbs = 22 kilograms
5.
12.5 lbs= 27.5 kilograms
E. Dependent (Responding) Variable
Due Date: November 11, 2009
The distance a trebuchet can launch a projectile
F. Hypothesis – If…, then…because…
Due Date: November 12, 2009
If _______________________________, then ___
_________________________________________
_____, because _____________________________
_________________.
If the
________________________,
I.V. (increases or decreases) then
the
D.V. will (increase or decreases)
____________________________,
information
because research
_________________.
If ____________________________,
mass of the counterweight is greater
then __________________________
the distance the trebuchet will
________________________,
launch
a projectile will be furtherbecause
______________________________.
D. Independent (Manipulative) Variable
Due Date: November 11, 2009
The mass of the counterweight
1.
2.5 lbs = 5.5 kilograms
1.
2. 2. 5.0 lbs = 11 kilograms
3. 3. 7.5 lbs = 16.5 kilograms
4.
5. 4. 10 lbs = 22 kilograms
5.
12.5 lbs= 27.5 kilograms
E. Dependent (Responding) Variable
Due Date: November 11, 2009
The distance a trebuchet can launch a projectile
F. Hypothesis – If…, then…because…
Due Date: November 12, 2009
then the
___
If _______________________________,
the mass of the counterweight is greater, then
_________________________________________
distance
the trebuchet will launch a projectile will be
_____, because
further,
because_____________________________
the counterweight will create more
_________________.
force on the sling arm.
Tool: Dual Pan Balance
Parts:Pans, riders, beams, adjustment
knob, base, pointer
Measuring: The unit of measurement is
grams. A gram is a very small measurement.
People usually use kilograms (1000 grams).
Block of wood - ______ grams
Someone’s science log –
Someone’s agenda –
Someone’s pencil –
Test Tube Corked Ball –
Rock –
Tape Measure –
Stopper –
Marble –
2 ways of measuring volume:
Length X Width X Height – tool?
Measure in centimeters
9cm X 9cm X 3.5cm =
The Block of wood’s volume is 283.5cm3
Water Displacement – tool?
How much does the water rise?
Graduated cylinders measure milliters(ml)
1ml of water = 1cm3, so…..
35ml=35cm3 & 158ml=158cm3 & 3145ml=3145cm3
Write at least 8 procedures
on how you figured out the
volume of 12 oz. can of
soda.
Volume of Objects
that are larger
1.Obtain all materials
2.
3.
4.
5.
Write at least 8
procedures on
how you figured
out the volume of
12 oz. can of soda.
1.Measuring Matter – Volume
2.Writing Procedures for Science Fair.
Volume of Objects
that are larger
1.Obtain all materials
2.
3.
4.
5.
1.What is the volume of the soda?
Not all objects can fit into a graduated cylinder
Supplies:
Towel
Tape
2-Liter bottle with top cut off, filled ½ way
with water.
Large Beaker with 600ml of water
Tools: Math, Calculator
Measuring: How much matter is inside of
something.Density affects float or sink.
Measuring density:
Mass(g)
or
÷ Volume(cm )= Density(g/cm )
3
3
Density(g/cm3)
Volume(cm3) Mass(g)
or
Mass
= Volume
Volume
Mass(g) Volume(cm3)=Density(g/cm3)
/
1. What is the volume of a book with the following dimensions?
Length = 12 cm, Width = 3 cm and Height = 20 cm
2. What is the density of the book in question #1, if its mass is 175 g?
3. What is the volume of a steel bar with the following dimensions?
Length = 5 cm, Width = 2 cm
Height = 30 cm
4. What is the density of a steel bar if its mass is 2.5 kg?
(Hint: convert to grams first.)
5. A cork ball has a volume of 5.0 cm3 and a mass of 120 grams.
What is the density of the ball?
6. Water has a density of 1 g/cm3. If you placed the cork ball and the
steel bar in water, which would float and which would sink?
7. Explain your answer to question #6 using your knowledge of
density.
1.
Object
1 block
2 blocks
3 blocks
4 blocks
5 blocks
6 blocks
7 blocks
8 blocks
Mass (g)
Volume (cm3)
Density (g/cm3)
Supplies:
Calculator - Guitar
Dual Pan Balance – Mickey Mouse
Density Blocks – Wayne’s World Poster
Object
1 block
2 blocks
3 blocks
4 blocks
5 blocks
6 blocks
7 blocks
8 blocks
Mass (g)
Volume (cm3)
Density (g/cm3)
1. How much did the mass change for each
additional block?
2. How much did the volume change for each
additional block?
3. How much did the density change for each
additional block?
4. What would be the mass, volume and density
of 12 blocks?
5. How is density a property of matter, but not
mass or volume?
6. How does density help identify a substance?
1. What is the volume of a book with the following dimensions?
Length = 12 cm, Width = 3 cm and Height = 20 cm
2. What is the density of the book if its mass is 175 grams.
3. What is the volume of a steel bar with the following dimensions?
Length = 5 cm, Width = 2 cm
Height = 30 cm
4. What is the density of a steel bar if its mass is 2.5 kg?
(Hint: convert to grams first.)
5. A baseball has a volume of 5.0 cm3 and a mass of 120 grams. What
is the density of the ball?
6. Water has a density of 1 g/cm3. If you placed the baseball and the
steel bar in water, what would happen to each?
7. Explain your answer to question #6 using your knowledge of
density.
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