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Food Chain (Gizmo)

Last updated over 4 years ago

41 questions

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Question 37

37.

Observe: Kill off most of the hawks using the – button, and then click Play. Observe the GRAPH for about 12 months, and then click Pause. What happens?

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1

Question 39

39.

Summarize: Give at least one example of each of the following:
A major disturbance that the ecosystem was able to recover completely from.

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1

Question 1

1.

Which organism is a producer in this food chain?

Hawks

Snakes

Rabbits

Grass

Question 2

2.

Where does the producer get its energy?

The Ground

The Air

Other animals

The sun

Question 3

3.

Consumers must eat other organisms for energy. Which organisms are consumers in this food chain?

Hawks

Snakes

Rabbits

Grass

Question 4

4.

Hawks

Question 5

5.

Snakes

Question 6

6.

Rabbits

Question 7

7.

Grass

Question 8

8.

What do you notice about each population as time goes by?

Question 9

9.

Notice the populations decrease as you go from the bottom of the food chain to the top. Whydo you think this is so?

Question 10

10.

Form hypothesis: How do you think predator and prey populations affect one another?

Question 11

11.

Doubling rabbit population : Grass

Decrease 

Increase

No change 

D

Question 12

12.

Doubling rabbit population: Snakes

Increase

Decrease

No Change

Question 13

13.

Doubling rabbit population Hawks

Increasse

Decrease

No Change

Question 14

14.

Halving rabbit population: Grass

Increase

Decrease

No Change

Question 15

15.

Halving rabbit population: Snakes

Increase

Decrease

No Change

Question 16

16.

Halving rabbit population: Hawks

Increase

Decrease

No Change

Question 17

17.

How did doubling the rabbit population affect the grass, snakes, and hawks at first?

Question 18

18.

How did halving the rabbit population affect the grass, snakes, and hawks at first?

Question 19

19.

Doubling snake population

Increase

Decrease

No Change

Question 20

20.

Doubling snake population

Increase

Decrease

No Change

Question 21

21.

Doubling snake population

Increase

Decrease

No Change

Question 22

22.

Halving snake population: Grass

Increase

Decrease

No Change

Question 23

23.

Halving snake population: Rabbits

Increase

Decrease

No Change

Question 24

24.

Halving snake population: Hawks

Increase

Decrease

No Change

Question 25

25.

Doubling hawk population: Grass

Increase

Decrease

No Change

Question 26

26.

Doubling hawk population: Rabbits

Increase

Decrease

No Change

Question 27

27.

Doubling hawk population: Snakes

Increase

Decrease

No Change

Question 28

28.

Halving hawk population

Increase

Decrease

No Change

Question 29

29.

Halving hawk population

Increase

Decrease

No Change

Question 30

30.

Halving hawk population

Increase

Decrease

No Change

Question 31

31.

How did increasing the snakes affect the grass?

Question 32

32.

Explain why:

Question 33

33.

How did increasing the hawks affect the rabbits?

Question 34

34.

Explain why:

Question 35

35.

Draw conclusions: In general, what effect did removing prey have on predators?

Question 36

36.

What effect did removing predators have on prey?

Question 38

38.

Experiment: Click Reset. Try making other changes to the ecosystem. Use the + or – buttons, or choose Diseased from the dropdown lists. Click Play and observe for at least 12 months. Record what happens below.

Question 40

40.

A major disturbance that caused the ecosystem to stabilize at a new equilibrium.

Question 41

41.

A major disturbance that caused the ecosystem to completely collapse.