Station 1: The Volume of Liquid. The image above shows various tools you will need.

Transcription

1 Station 1: The Volume of Liquid The image above shows various tools you will need. 1. What amount of liquid is in the graduated cylinder pictured? (Measure at the lowest point of the curve and include units!) 2. How much liquid can your graduated cylinder measure? 3. How much liquid can your beaker measure? 4. Fill your graduated 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

2 Station 2: 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 shown 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 20 ml. Drop the marbles in and see how much the water rises this is the volume of the marbles. Complete the table below. A) Volume of Water before adding marbles 10 ml (starting volume) B) Volume of Water after adding marbles Calculate (B minus A) Volume of all 3 marbles 3. Now determine the volume of a single marble by dividing your total (above) by 3.

3 Station 3: 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 2. Use a meter stick or ruler to fill out the table below. (Grayed boxes need not be completed) Width of door Your height Height of graduated cylinder Length of your shoe In millimeters In centimeters In Meters 3. 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 ]

4 Station 4: Mass of Objects Tools: Electronic scale or balance. 1. Determine the mass (in grams) of the 3 marbles: 2. Determine the mass of 20 ml of water. To do this you will need to mass an empty graduated cylinder, then add the water and find the difference. a) Mass of Graduated cylinder b) Graduated Cylinder + 20 ml of water c) Mass of 20 ml of water 3. Use the same technique to determine the mass of 50 ml of water:

5 Station 5: Interpreting Graphs: Pie Charts 1. Mr. M s class grades were graphed as a pie graph. Based on this graph: a) The largest percentage of students received what grade? b) Estimate what percentage of the class received a B. c) Estimate what percentage of the class received an A. d ) Based on the graph, do you think Mr. M s class is hard? Why or why not? 2. Bugs were observed at the park and compiled in a pie graph. Based on this graph: a) Which group of organisms has the most number of species? b) What is the total percentage for all invertebrates? c) Approximately what percentage are vertebrates?

6 Station 6: Interpreting Graphs: Scatter Plots The scatter plot shows a bus stop where those waiting at the bus are plotted by their height and by their age. Identify which dot goes with which passenger. 1) 2) 3) 4) 5) 6) 7)

7 Station 7: Interpreting Graphs: Bar Graphs 1. The bar graph compares the number of students enrolled in classes. a) What class has the highest enrollment? b) How many students are enrolled in Chemistry? c) How many are enrolled in Anatomy? d) Which course is the least popular? 2. The bar graph compares the growth of town populations. a) According to the graph, which town grew the fastest? b) Which town declined in population? c) Which town had the smallest change in population? d) What is the population of Woodland in 2000?

8 Station 8: Interpreting Graphs: Line Graphs 1. This line graph compares the growth of plants that were kept in the sun for different amounts of time. a) On Day 7, the plants kept in the sun for 3 hours were how tall? b) On Day 10, the plants kept in the sun for 9 hours were how tall? c) On Day 11, the plant (grown with 1 hour of sunlight) was how tall? d) Based on the graph, the plant grows best in what amount of sunlight? 2. The line graph shows the number of worms collected and their lengths. a) What length of worm is most common? b) What was the longest worm found? c) How many worms were 6 cm long? d) How many worms were 7.25 cm long?

9 Station 9: Creating Appropriate Graph for Data An experiment studies the effects of an experimental drug on the number of offspring a mother mouse has. 10 female mice are given the drug and then impregnated. The number of mice in their litters is compared to the litters of mice that did not take the drug. Group A (drug) Group B (control) Number of Babies in Litter Based on the data, what would you conclude about the drug, did it work? Explain. A type of feed claims to boost the growth rate of cows. The feed is tested on two twin newborn cows. Bessie receives the experimental feed, and Bertha receives regular corn feed. Their weights are recorded below. Month April May June July Aug Bessie 150 lbs 210 lbs 260 lbs 320 lbs 400 lbs Bertha 150 lbs 250 lbs 290 lbs 340 lbs 400 lbs 2. Graph the data; use a dotted line for Bessie and a straight line for Bertha. Make sure you label the X and Y axis. Both cows ended at the same weight, but did the experimental feed change the way they gained weight at all? Describe your conclusions about the experimental feed and explain why it is important that the experiment used twin cows?

10 Station 10: Dependent Variable vs. Independent Variable 1. a) b) c) d) 2. Smithers thinks that a special juice will increase the productivity of workers. He creates two groups of 50 workers each and assigns each group the same task (in this case, they're supposed to staple a set of papers). Group A is given the special juice to drink while they work. Group B is not given the special juice. After an hour, Smithers counts how many stacks of papers each group has made. Group A made 1,587 stacks, Group B made 2,113 stacks. Identify the: a) Control Group b) Independent (Manipulated) Variable c) Dependent (Responding) Variable d) What should Smithers' conclusion be? e) How could this experiment be improved?