Questions:
Essential Question: Do you think that it is possible that humans can change the chemistry of the ocean.
$> Yes, it is possible that humans can change the chemistry of the ocean.
1. Carbon in the Air: What does the graph of atmospheric Carbon Dioxide tell us?
$> The graph shows carbon dioxide levels measured at Mauna Loa observatory in Hawaii from 1958 to 2008.
2. pH scale: Where do some common items fall on the pH? Take a screenshot of your final answers and paste below.
Essential Question: Do you think that it is possible that humans can change the chemistry of the ocean.
$> Yes, it is possible that humans can change the chemistry of the ocean.
1. Carbon in the Air: What does the graph of atmospheric Carbon Dioxide tell us?
$> The graph shows carbon dioxide levels measured at Mauna Loa observatory in Hawaii from 1958 to 2008.
2. pH scale: Where do some common items fall on the pH? Take a screenshot of your final answers and paste below.
3. The pH changes by the amount of carbon dioxide. A change from 8.2 to 8.1 on the pH scale is a 30% increase.
4. Carbon in the Water: Explain what happens to Carbon Dioxide in ocean water.
$> Carbon Dioxide in the ocean water turns into carbonic acid.
5. Exploring Carbon Dioxide Levels and Effects: Look over the interactive chart and describe what happens at each of the levels.
$> Optimistic - As the years went from 1865 - 2090 the corals shrink as the amount of carbon dioxide increased with the pH 7.92.
$> Middle Ground - The corals shrink even more with higher carbon dioxide level and the pH for year 2090 is 7.83.
$> Pessimistic - The corals size decreased with higher carbon dioxide level, with pH level for 2090 is 7.73.
6. BioDiversity in the Sea: Sort each of the organisms into Calcifiers or Non-Calcifiers. Take a screenshot of your final answer.
4. Carbon in the Water: Explain what happens to Carbon Dioxide in ocean water.
$> Carbon Dioxide in the ocean water turns into carbonic acid.
5. Exploring Carbon Dioxide Levels and Effects: Look over the interactive chart and describe what happens at each of the levels.
$> Optimistic - As the years went from 1865 - 2090 the corals shrink as the amount of carbon dioxide increased with the pH 7.92.
$> Middle Ground - The corals shrink even more with higher carbon dioxide level and the pH for year 2090 is 7.83.
$> Pessimistic - The corals size decreased with higher carbon dioxide level, with pH level for 2090 is 7.73.
6. BioDiversity in the Sea: Sort each of the organisms into Calcifiers or Non-Calcifiers. Take a screenshot of your final answer.
7. Describe the life cycle of Echinoderms and explain why they are so sensitive to changes in pH.
$> Echinoderms have internal skeletons made of magnesium calcite from calcium carbonate, which makes them the most sensitive to ocean acidification. Echinoderms start as a 2 cell embryo, changing into a young sea urchin larva, then into a late stage larva, and they become juvenile crawling out of their larval body. After the juveniles grow after metamorphosis, they finally become a sea urchin adult. The ocean acidification can affect the sea urchin's larva's growth of the skeleton and spine since their skeleton are very sensitive magnesium calcite.
8. How to Study Ocean Acidification in the Lab- How may ocean acidification impact Sea Urchins in the larval stage? Can you think of any other possible acidification impacts on marine organisms other than calcification?
$> They may not be able to survive. It could also make them weaker.
Lab:
1.Look at the first slide under the microscope- Describe what you see.
$> What I see is a circle that kind of looks like an eye. There seems to be something little particles towards the right side of the circle.
2. Fill two flasks with sea water and label them with "pH 7.7" and "pH 8.1". Explain why we are using these two pH values for this experiment.
$> We are using these two pH values for this experiment because pH 8.1 reflects the pH level today, and pH 7.7 reflects the pH level at the end of the century.
4: What happens to the pH of the first sample when Carbon Dioxide is added? Explain.
$> The pH of the first sample becomes lower.
5: Complete the rest of the procedures to prepare slides for study.
6: After making measurements- Find the AVERAGE of each data set
$> 463 for pH 7.7 & 513 for pH 8.1
Take a screen shot of the data data/graphs and paste below:
$> Echinoderms have internal skeletons made of magnesium calcite from calcium carbonate, which makes them the most sensitive to ocean acidification. Echinoderms start as a 2 cell embryo, changing into a young sea urchin larva, then into a late stage larva, and they become juvenile crawling out of their larval body. After the juveniles grow after metamorphosis, they finally become a sea urchin adult. The ocean acidification can affect the sea urchin's larva's growth of the skeleton and spine since their skeleton are very sensitive magnesium calcite.
8. How to Study Ocean Acidification in the Lab- How may ocean acidification impact Sea Urchins in the larval stage? Can you think of any other possible acidification impacts on marine organisms other than calcification?
$> They may not be able to survive. It could also make them weaker.
Lab:
1.Look at the first slide under the microscope- Describe what you see.
$> What I see is a circle that kind of looks like an eye. There seems to be something little particles towards the right side of the circle.
2. Fill two flasks with sea water and label them with "pH 7.7" and "pH 8.1". Explain why we are using these two pH values for this experiment.
$> We are using these two pH values for this experiment because pH 8.1 reflects the pH level today, and pH 7.7 reflects the pH level at the end of the century.
4: What happens to the pH of the first sample when Carbon Dioxide is added? Explain.
$> The pH of the first sample becomes lower.
5: Complete the rest of the procedures to prepare slides for study.
6: After making measurements- Find the AVERAGE of each data set
$> 463 for pH 7.7 & 513 for pH 8.1
Take a screen shot of the data data/graphs and paste below: