Scientific Processes - Tools and Measurements .................................Name ______________________________

Part A - Count Your Drops

1. Take a guess - how many drops of water in one milliliter of water? ______________
2. Tools you will need:

*Note, to measure volume with a graduated cylinder, you should take the reading at the lowest point in the curve.
What amount of liquid is in the graduated cylinder pictured? ____________
How much liquid can your graduated cylinder measure? ______________
How much liquid can your beaker measure? ______________

3. To determine the number of drops it takes to make a milliliter, fill you cylinder to 10 ml of water. Carefully add drops using the pipette until you reach 11 ml. Repeat this process 3 times in order to calculate an average.

Trial 1 Trial 2 Trial 3 Average
       

Part B - The Volume of Solid Objects

1. Solid objects have a volume also (basically the amount of space the object takes up). Volume can be measured in two ways.
For symmetrical objects, volume is simply LENGTH x WIDTH x HEIGHT
Use a metric ruler to measure the box below and determine its volume (measure in cm)

The volume of the box is: ______________

2. For oddly shaped objects, using a water displacement technique can determine the volume. Find the volume of 3 marbles by filling a graduated cylinder to 10 ml. Drop the marbles in and see how much the water rises - this is the volume of the marbles. Complete the table below.

Volume of water before adding marbles Volume of water after adding marbles Difference in Volume Volume of 3 Marbles
       

Part C - Length of Objects

1. The three units of length you will be most familiar with are: millimeters, centimeters, and meters. Use a meter stick to determine:
How many mm in a cm _________ How man cm in a m ____________

Kilometers are used to measure long distances. How many meters in kilometer? _________

2. Use a meter stick or ruler to fill out the table below. (Grayed boxes need not be completed)

3. Which measurement is the largest? Circle your answer for each pair
a) 14 mm or 1 cm d) 145 m or 145 km
b) 334 m or 1 km e) 3.4 cm or 30 mm
c) 1 m or 990 cm f) 10 km or 1000 cm

4. Circle the BEST metric unit for each.
a) The length of an eyelash [ mm cm m km ]
b) The height of a flagpole [ mm cm m km ]
c) The length of your arm [ mm cm m km ]
d) The distance between Chicago and St Louis [ mm cm m km ]