Question: Does the amount of surface area affect how fast it takes for a rock” to be weathered?
Hypothesis: If we use 3 types of “rocks”, we think that the one that the smallest will be weathered away the fastest because it is the smallest in size than than the other “rocks”.
Materials:
2 Beakers
3 Alka-Seltzer Tablets
Room Temperature Water
Timing Device
Sheet of Paper
Pencil
Controlled Variables
Amount of Water
Temperature of Water
Volume of “Rock” (Alka-Seltzer)
Type of “Rock” (Alka-Seltzer)
Timing Device
Beakers
Manipulated Variable
Surface Area of the “Rock” (Alka-Seltzer)
Procedure
Fill one of the beakers with 200 mL of water.
Drop 1 whole tablet into the beaker and start the timer. Stop the timer when the entire tablet has dissolved. DO NOT
…show more content…
Place the third tablet and place it on a sheet of paper. Take the unused beaker and crush the tablet to where it is a powder. Then, take a pencil and remove any powder on the bottom of the beaker. Take all the powder from the sheet of paper and pour all of the powder into the dry (unused) beaker.
Pour the 200 mL of water into the beaker with the tablet powder in it. Instantaneously, start the timer when you pour the water. Stop the timer when the powder has completely disappeared. DO NOT WAIT FOR THE BUBBLES TO STOP. ONCE THE TABLET IS GONE, TIME IS UP!
Record the data on the next page.
Whole, 4 Pieces, or Crushed
Time
Whole
49
4 Pieces
45
Crushed
43
Conclusion: The purpose of this lab was to see if surface area affects the rate of weathering. The data tells us that the surface area does, in fact, affect the rate of weathering. The more surface area (the crushed tablet), reduces the rate of weathering. In my hypothesis, I believed that the smaller the individual rocks, the faster the weathering rate would be. At the end of this experiment, I have learned that the more surface area means that the faster a rock will
The time for each trial will be measured. The time will start when the tablet is in the acid and it will end when the reaction is complete and the whole tablet has
Complete this week’s lab by filling in your responses to the questions from Geoscience Laboratory. Although you are only required to respond to the questions in this worksheet, you are encouraged to answer others from the text on your own.
After added, pick up the beaker and swirl it around lightly for a short period of time.
With our observation of the Shawangunk formation, we see a sedimentary rock formation containing a range of grain size. Such sizes range from pebbles (3cm-5cm), fine-grain sand, and medium-grain sand. There is some grading towards the bottom left of the outcrop known as a reverse grading with some small cross beds present (Figure 2). The grading occurs towards a slight part of the outcrop where we see the grading beginning as fine grain sediments and working up to coarser grain. With moderate sorting we see variations of degree of sorting per bed. As the degree of sorting varies as does the sphericity. The sediment bedding is well seen ranging in sizes of +/--20 cm to 40 cm. This outcrop has thick beds as one can see the basic units with cracks in between each (Figure 3). With mostly tabular beds consisting of sub-angular, and sub-rounded sediments, this outcrop also consists of some ventricular beds (Figure 4). When looking at figure 4, we have a small space of a ventricular bed present. This is because the bed comes in, pinches thicker bedding,
H2o co2 and h2co3 help in the dissolution of limestone and which produces bi carbonate which helps in the forming of caves and landscapes.
6.Once timer has gone off after 30 seconds, quickly remove pot from heating surface and quickly pour into bowl.
If granite is soaked in acid rain, it will be affected the least because it is the most dense material out of the ones tested. The independent variable for this experiment is the types of
Introduction In these experiments, the purpose was to recreate erosions over time with non-dangerous materials. In experiments one and two, the independent variable was the time. In experiment one, the dependent variable is the Na-24. In experiment two, the dependent variable was the pennies. In experiment one it can be seen that after every half-life the remaining amount of Na-24 progressively went down.
Despite a family history of geophysicists and rock enthusiasts, I’ve never found the subject of rocks particularly fascinating. However, an exploration of Earth Science has lead me to the discovery that rocks are actually hidden gems (often literally), and that there’s more to the topic than one would think.
seltzer tablet into it, and as I did so I started the timer. When Alka
1) Separate the solid from the liquid in the beaker by decanting the liquid. Ask your instructor to demonstrate the correct procedure.
We took the plastic cup and added the stir bar into it, then we inserted the plastic cup and the stir bar into the styrofoam cup. Next, we secured the clamp on the ring stand rod, and then added the solution calorimeter to the other end of the clamp. Following that, we took the beaker and filled it with distilled water and transferred it to the graduated cylinder. Then we poured it into the plastic cup with the stir bar in it. We turned the stir plate to number 6 and let the water stir around for 10 seconds, then we added in our first effervescent tablet and let it for about a minute or until it was fully dissolved. We added an extra tablet to every test until we reached the total number of tablets we could insert which was 5. After we were finished with each test, we washed out plastic cup, the solution calorimeter, and the stir
This lab showed how mechanical weathering can work. Mechanical is where objects physically break apart. In the lab, Sugar cubes had to be shook in a jar for 3 minutes to demonstrate mechanical weathering and the cubes represented sedimentary rocks. One sugar cube for 3 minutes, then 2 cubes for 3 minutes, then 3 cubes for 3 minutes. The cubes would be weighed and sketched. The hypothesis was that the cubes would become more round and have less mass after being shaken, and they did.The type of mechanical weather involved was abrasion and gravity. Gravity would bring the cubes down, making them hit the sides of the jar and break apart. Abrasion would happen when 2 or more sugar cubes would scrape against each other. The data did not make a
After the 5-minute period, take the Elodea and thermometer out of the beaker, pour the mixture into the beaker down the drain and rinse.
Prepare timer to start at the exact time the Alka Seltzer is dropped into the beaker of water.