Your Biome’s Energy Pyramid

3 May

Below is an example of a Energy Pyramid:

Be sure to make the distinction between the “Energy Pyramid” and a “Food Chain”

Your Biome’s Food Chain

3 May

Below is an example of a food chain model for Antartica:

Your food chain will likely be different, but be sure to place Consumers and Producers in the correct locations.

Directions for Biome Project

27 Apr

Researching all the Different Biomes

26 Apr

Look for your name, and to the right you will see which biome you will be researching:

SECOND PERIOD

Bailey – Coniferous

Bouie – Forest (taiga)

Handsford – Tropical Rainforest

Jean-Baptiste – Desert

Lagrandeur – Grassland

Lubin – Intertidal Zone

Mathews – Tundra

McMillian – Marine

Ranger – Freshwater

Smith –  Deciduous

Bruno – Deciduous

Everett – Coniferous

Ferron – Forest

Gritton – Tropical Rainforest

Johnson [De-Andre] – Desert

Kanu – Grassland

Manahan – Intertidal Zone

Poitier – Tundra

Williams – Marine

The following post will include specific directions regarding the research project.

THIRD PERIOD

Byrd – Coniferous

Cherry – Forest (Taiga)

Fussell – Desert

Gutierrez – Grassland

Harvin – Intertidal Zone

Hunter – Tundra

Hylton – Marine

James – Freshwater

Jenkins – Deciduous

Mack – Coniferous

Olesco – Forest (Taiga)

Outen – Tropical Rainforest

Rhymer – Desert

Smith, Alicia – Marine

Smith, Tyra – Grassland

Thomas – Intertidal Zone

Washington – Tundra

Wright – Coniferous

FOURTH PERIOD

Grasslands: Taylohr, Bianca, Michael R., Michael P.

Marine Biome: Keannau, Courtney, Larry

Tundra: Chadwick, Tyler, Llewellyn

Forest (Taiga):  Tyler B., Donte, Derrick

Intertidal Zone: Ronald, Mikeevia, Corey

Desert: Wendell, Amber, Kamani

Tropical Rain Forest: Marlin, Angel, Runako

Deciduous: Yanin, Jalil, Rony, Andre W.

Gizmo: Greenhouse Effect

30 Mar

Gizmo Warm-up

Like the windows of a car, greenhouse gases play a major role in regulating Earth’s climate. Withoutthe gases that trap heat in Earth’s atmosphere, Earth would be a frigid desert like Mars (average temperature -55°C, or -67°F). Too much greenhouse gas and Earth could be a fiery inferno like Venus (average temperature 450°C, or 850°F).

On the Greenhouse Effect Gizmo™, set the Greenhouse gases to 0% and the Simulation speed to fast.

1. Click Play ( ) and view the BAR CHART tab. The temperature will go up and down every day, but try to look at the overall trend. What happens to the temperature over time?

2. Now set the Greenhouse gases to 100% and let the simulation run for a while. How does a maximum amount of greenhouse gas affect the temperature?

Activity:  Heat in, heat out Get the Gizmo ready:

•Click Reset ( ).

• Set Simulation speed to slow. • Be sure the Greenhouse gases level is 10%. Question: How do greenhouse gases affect Earth’s climate?

1. Observe: Select the BAR CHART tab and click Play. After about 24 simulated hours, click Pause ( ). What do you notice about the heat flow into and out of Earth’s atmosphere?

. Analyze: Select the TABLE tab.

A. At what time of day is heat flow into the atmosphere (Hin) greatest?

B. At what time of day is heat flow into the atmosphere (Hin) least?

C. Does heat flow out of the atmosphere (Hout) change during a day?

D. At what time of day is surface temperature highest?

Lowest?

3. Predict: Click Reset. When you change the amounts of greenhouse gases in the atmosphere, which factor(s) do you expect to change? (Choose your answer/answers.)

Heat flow in Heat flow out  Temperature

4. Experiment: Select the BAR CHART tab, and click Play. While the simulation is playing, move the Greenhouse gases slider back and forth.What do you notice?

5. Experiment: Click Play, and this time observe the GRAPH tab as you change the Greenhouse gases. What do you notice?

6. Draw conclusions: The influence of greenhouse gases on temperature is called the greenhouse effect. Based on what you have seen, how do greenhouse gases affect the heat flow into and out of Earth’s atmosphere?

7. Extend your thinking: Atmospheric concentrations of greenhouse gases such as carbon dioxide have risen dramatically in the past century. Most scientists agree that this has begun to result in global warming, a slow increase in average temperature worldwide.  What are the possible consequences of global warming?

Directions for Gizmo Assignments

30 Mar

Below is a step-by-step set of directions for making sure you complete Gizmo assignments correctly:

1. Open http://www.explorelearning.com

2. In a separate window, open pmcsscience3.wordpress.com

3. Login to the Gizmo with u: secondp112 and p: cow864

4. Open specific Gizmo

5. Highlight questions on pmcsscience [if your right-click doesn’t work, hold down CTRL+C]

6. Click on the “Comments” button

7. After the new page opens, go all the way to the bottom of the page, and click “Paste” or CTRL+V

8. After reading each question, go back into the gizmo to obtain the right data, then type your answer in the space.

9. At the very end, make sure to click on “Post Comment”

10. That’s it!

Gizmo: Pond Ecosystem

28 Mar

The Pond Ecosystem Gizmo™ lets you study ponds as an ecologist would. Each of the tools can be dragged to the pond to take measurements.

1. Drag the Thermometer to the pond at 6:00 AM. What is the water temperature? _______ °C

2. Click Fast-forward ( ) until about 12:00 PM, and then click Pause ( ).What is the water temperature now? _______ °

C3. Just as soda contains dissolved carbon dioxide, pond water contains dissolved oxygen. The unit for measuring the concentration (amount) of oxygen is parts per million (ppm).Drag the Oxygen gauge to the pond. What is the concentration of oxygen? _____________

4. Click Play ( ) and drag the Fishing pole to the pond. Fish for about four hours.How many catfish did you catch? _____________ How many trout? _____________

Introduction: The fish in a pond are affected by biotic factors such as other fish, aquatic plants, insects, and bacteria. They are also affected by abiotic factors, or nonliving things such as temperature and the concentration of dissolved oxygen.

Question: How does the amount of dissolved oxygen in a pond change during one day?

1. Observe: Use the Oxygen gauge to measure the concentration of dissolved oxygen at several different times. How does the oxygen concentration change over a single day?
2. Predict: At what time should the amount of oxygen in a pond be lowest? (Choose one) 6:00 AM 12:00 PM (noon) 6:00 PM 12:00 AM (midnight)

3. Test: Measure the dissolved oxygen at four times during the day: 6 AM, 12 PM (noon), 6 PM, and 12 AM (midnight). Then click New pond and repeat the test for two more ponds. Record your results in the table below.

4. Analyze: Was your prediction correct for all three ponds? Explain.

5. Draw conclusions: The dissolved oxygen in a pond is produced by pond plants and algae in a process called photosynthesis.

A. At what time of day does photosynthesis take place?

B. What source of energy is present during this time?

C. Why does the level of dissolved oxygen go down after sunset?

Activity B

1. Explore: To investigate the question, measure the oxygen concentration and go fishing in several ponds. (To fish, click Play and drag the fishing pole into the pond for several hours.

2. Form hypothesis: How does oxygen concentration affect the fish that live in a pond?

3. Predict: If you fish in four ponds, will more fish be caught in the two ponds with the lowest oxygen concentrations, or the two ponds with the highest oxygen concentrations? Explain.

4. Test: Investigate four ponds. For each pond, measure the dissolved oxygen concentration at 6:00 AM. Fish for six hours and record how many catfish and trout you catch in each pond.(Hint: To find a pond with relatively high levels of dissolved oxygen, click No farms.)

5. Analyze: What does your data show?

6. Draw conclusions: Which type of fish can survive better in low-oxygen conditions? Explain.