Science 7 (Period 5) Assignments

Tentative Weekly Agenda and HW 11/18 - 11/22

 

IN38 Activity 10: Energy and Matter in Food Analysis Questions Due Tuesday 

Complete 1-2 in your Notebook IN38 

1. 1. Why do living organisms need
2. a. food?​
3. b. energy?​
4. c. matter?

1.  
2. 2. Describe what happens to matter, such as a protein or a carbohydrate, after it is eaten. Be sure to include​ 

• each step as the body uses the protein or the carbohydrate.​
• where each step occurs.

Complete 3-4 on  a separate page to be collected 

1. 3. Based on what you have learned in the “Cellular Respiration” activity and this activity, draw a diagram (or create another type of model) to show what happens to the food an animal eats. Your model should show the movement of matter and the release of energy stored in food. You can copy the partial diagram from the textbook onto a sheet of paper to get you started. 
2.  

4.  Use your answer from Analysis item 3 to explain how matter is neither created nor destroyed in the processes shown in your model.  

TENTATIVE Weekly Agenda and Homework 9/30 - 10/4

(IN30) Finish Analysis Questions A-40 

 

1. a. The organisms that you uncovered in your owl pellet are likely to be voles—small rodents similar to mice. Owls also eat other small mammals, such as shrews, and insects. Use this information about an owl’s diet to develop a food web. 
2.  

1. b. Voles eat mostly plant material, such as grass, seeds, roots, and bark. Shrews eat insects. Add these relationships to your food web. 
2.  

1. c. Another kind of owl, the great horned owl, sometimes eats other owls. It also eats small mammals like voles. Add the great horned owl to your food web, and explain how it impacts the rest of the food web. 
2.  
3. 3. Consider your food web when responding to the following items: 

1. a. What would happen to the food web if a disease caused the populations of voles and shrews to die off? Explain your reasoning. 

1.  
2. b. How would this die-off affect the flow of energy in the ecosystem? 
3.  

1. 4. All living things have a place in a food web. What would your personal food web look like? 

(IN26) Answer Analysis Questions from page A-26 

you learned in Activity 5, suggest a reason for this observation. 

Hint: Think about the ecosystem and how it may have changed 

(A-24) Finish Analysis Questions #1-5 (IN24) 

1. What was the most common biotic component in your group’s transect? 

1. What other biotic and abiotic components did you note? 

1. Describe the relationships you see between the most common type of organism and other components of the environment? 

1. What questions would you like to ask about the environment? 

1. How would you test the above questions? 

(IN18) Finish Analysis Questions #1-5: 

1. 1. Based on the reading, how did the amount of fish caught in Lake Victoria change from the 1960s to 1990?  

1. 2. Based on the graph showing amounts of Nile perch caught in Lake Victoria, describe how the amount of 3. Nile perch caught changed from 1980 to 1990 and from 1990 to the present. 

1. 4. Look again at the graph. How do you think the number of metric tons of fish caught relates to the size of the total fish population from year to year? Explain your reasoning. 

1. 5. How did the introduction of Nile perch affect the people who lived near Lake Victoria? 

1. What effect did the introduction of Nile perch have on cichlids and other organisms that lived in the lake? 

Pages to Reference: A-4 through A-8 

Textbook Link: https://pvpusd-my.sharepoint.com/:b:/g/personal/colgang_pvpusd_net/EXQFR11R1PJBmrd7CfmalPcBVfpfMYsxR3afhxY9lculrg?e=y8R0QM 

The syllabus will be handed out in class. Please review with your guardian and return the last page signed by next Thursday 9/5

Weekly Agenda and homework 8/28-8/30