Transcript Measurement Scramble - Boone County Schools

Measurement Scramble
Rule! Never, ever any naked
numbers!
Always “dress” your measurements with units.
8 Stations
Some are at your desk and others are at stations:
1.
2.
3.
4.
5.
6.
7.
8.
Length & Distance
Time
Mass
Weight
Temperature
Solid Volume
Liquid Volumes
Density
1. Length & Distance (At Station #1)
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•
•
•
Length = the amount of vertical space an object takes up
Distance = the degree or amount of separation between two points, lines,
surfaces, or objects
Base unit = meters (m)
Inquiry Question: What is the effect of mass on kinetic energy as measured by
the distance the cart can push the wood block?
Hypothesis: If weights are added to a cart, then the kinetic energy will be ___________
and the block of wood will be ________________________.
Cart
Mass (g)
Distance Block moved (cm)
Without weight
With weights
Ramp
Wood Block
2. Time – (At Desk)
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•
•
Time = a dimension in which events can be ordered from the past through the present
into the future, and also the measure of durations of events and the intervals between
them
Base Unit = seconds (s)
Inquiry Question: What is the effect of gender on average reaction time of Middle
School students’ hands as measured by the amount of time needed to catch a dropped
meter stick?
http://www.youtube.com/watch?v=CYHrPvDnGTY
Hypothesis: If a meter stick is dropped between a ________________ Middle
School students’ thumb and forefinger, the reaction rate will be
____________________________________.
Student
Trial 1 (s)
Trial 2 (s)
Average (s)
3. Mass – (At Station # 3)
• Mass = the amount of matter
• Base Unit = grams (g)
• Task: Measure the mass of a material without
removing the material from the container.
4. Weight – (At Station #4)
• Weight = the force on the object due to gravity;
mass x gravitational acceleration; w = m x g
• On Earth: gravitational acceleration = g = .098 cm/s2
• Base Unit = Newtons (N)
• Task: Compare the measured weight of a toy car with
the calculated weight of a toy car.
Toy car mass = _______ g
5. Temperature – (Take Tray to Desk)
• Temperature = Temperature is a measure of the
internal energy of the system, while heat is a measure
of how energy is transferred from one system (or body)
to another.
• Base Unit = degrees Celsius (° C)
• Task: Measure the temperature change in the
following endothermic chemical reaction.
H3C6H5O7+ 3 NaHCO3→ 3 CO2+ 3 H2O+ Na3C6H5O7
Citric acid
100 ml
Baking Soda
1 level teaspoon
6. Solid Volume – (At Desk)
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•
•
•
Volume = the amount of space an object takes up
Base unit = cubic meter (m3)
Important Conversion: 1 ml = 1 cm3
Task: Calculate the volumes for 2 materials:
Regular Shape
Irregular shape
7. Liquid Volume – (At Desk)
• Liquid Volume = space a substance takes up in a
container
• Base Unit = liter (L)
• Task: Practice measuring out the following
amounts of water using the different graduated
cylinders. 2 ml 25 ml 50 ml
Remember! : Your eye
should be level
With the meniscus.
8. Density – (Station # 8 Triple Beam Balance)
• Density = the amount of mass per unit of volume;
d = mv
• Base unit = gram per cubic centimeter g/cm3
• Density of water (@ room temperature) = 1 g/cm3
• Inquiry Question: What effect does density have on
whether or not a material will float in water?
Hypothesis: If a material is _______ dense than water,
then it ___________________ float in water.
Directions:
1) Use Triple Beam to measure mass of each cube in grams.
2) Use protractor to measure side of cube in cm.
3) Return to desk to do calculations. Density = mass/ volume