Lab #4: Triple Beam Balance Scale Activity
Total Page：16
File Type：pdf, Size：1020Kb
Name______Date______
LAB #4: TRIPLE BEAM BALANCE SCALE ACTIVITY
A triple beam balance scale is used to measure the mass of an object. The scales contain three (triple) weight bars. The farthest bar measures in increments of 10 grams. The middle bar measures in increments of 100 grams and the bar in the front measures in increments of 1 gram. The use of a scale with three bars for measuring allows the user to be as precise as possible with any measurement.
How to use the scale: 1. Make sure that the measuring plate is clean of all foreign objects. 2. Make sure that all of the weights are at zero and that the scale is balance on zero. 3. Place the item to be weighted on the center of the weighting pan. You will notice that the balancing bar is now above the zero. 4. Begin by carefully moving the middle weighing bar over to the 100 gram position. If the balancing bars stays above the zero that means that the object weights more than 100 grams and you will have to move the weight over. If the balancing arm drops below the zero that means that the object weighs less than 100 grams and you will have to move the 1000 gram bar back to zero and start with the 10 gram increments.
Group Predictions A. Put the following items in order from the lightest to the heaviest. You can lift them up to get a sense of how heavy each one is. Write your answers in the table below.
1- “D” cell battery 2- 8 cm bolt 3- Colored magnetic ball 4- Large Metal Nut 5- Bag of Dried Beans (15)
Lightest
1-
2-
3-
4-
5-
Heaviest Actual Weights B. Weight each of the following items on the triple beam balance scale and record your answers in the box below.
“D” Cell Battery Grams 8 cm Bolt Grams Colored Magnetic Ball Grams Large Metal Nut Grams Bag of Dried Beans (15) Grams
C. Look at your prediction table (A) and the actual weight table (B). Which one/s of your predictions were correct?
______
______
D. What surprised you about the results that you obtained?
______
______
E. From your actual weights in section “B”, re-write each item from lightest to heaviest and put it in the box below.
1.
2.
3.
4.
5.
F. Create a bar graph that shows you the actual weight of the five different items. List them from lightest to heaviest. Don’t forget the title, key, labels and your name.