science 8 topic 2 – reflection - science with mr....

Mr. Dan – CIS Abu Dhabi Science 7

Topic 1 - Interactions Within an Ecosystem

1. Ecology is the study of the relationship between living

_________________________________________________.

2. Living things :

Need ________________________________________.

Animals eat food while plants make it. Food gives living things energy. Food also provides nutrients.

Need __________________________________________.

Living things can not function and will eventually die without water.

Exchange _______________________________________.

All living things exchange gases. Plants use carbon dioxide to make food and produce oxygen. Most other living things use oxygen to produce energy and give off carbon dioxide.

Need ____________________________________________.

3. Adaptations

Living things are adapted, so they 'fit' into their surroundings, to

________________________________________________________________________.

An adaptation is an inherited characteristic that helps an organism survive and reproduce in

_________________________________________________________________________.

Sometimes adaptations are learned during the

__________________________________________________________________________.

List 4 examples of adaptations:

____________________________________ __________________________________

____________________________________ __________________________________


4. Ecosystems

An ecosystem is the interactions between ________________________________________

________________________ in a particular environment.

An ecosystem is a place where ________________________________________________

__________________, such as a rotting log, or a forest.

All organisms and parts within this place are interacting all the time and adjustments must

occur if the _______________________________________________________________.

5. Interactions in Ecosystems

Symbiosis

Is when two species live closely together in a relationship that lasts over time occurs

There are _________________ forms of symbiosis:

1) Mutualism

Mutualism occurs when there is a relationship between two different organisms, in which each

partner ___________________________________________________________________.

2) Parasitism

Parasitism occurs when there is a relationship between two different organisms, in which one

partner _________________ from the relationship, while the other partner is ____________

__________________________________.

3) Commensalism

Commensalism occurs when there is a relationship between two different organisms, in which

one partner _____________________________________ from the relationship, while the

other neither _______________________________________________________________.

From the notes what is one example of each symbiotic relationship:

Mutualism- Commensalism-

Parasitism-


Symbiotic Relationship Review

1. This is an example of __________ _____ because __________________




6. Impacts

What is an example of another way that animals impact their environment?

___________________________________________________________________________

Topic 1 review

1 a) list all the basic needs that all organisms share

b) Imagine that you are a white-footed mouse, living in a prairie grassland ecosystem. What are some different ways you can meet your needs?

2. Compare the Falcon’s feet to the duck’s feet in the pictures in your text on page 17

a) in what ways are the ducks feet adapted for living in water?

b) In what way are the Falcon’s feet adapted for catching food?


3. Describe 2 adaptations of a fish. Explain how theses adaptations help the fish live in its environment.

4. Define symbiosis in your own words. Give on example of each not mentioned in this unit.


Topic 2 – Human Impacts on Ecosystems

7. Natural Resources are the materials and products that are found in nature, that people

use to meet _______________________________. The impact that people have on the

use of resources can be very ____________________, or can be___________________,

and can lead to positive or ________________________________________________.

The needs of all living things now have to be met with the available

____________________________________.

How we are able to satisfy these needs with minimal conflict will determine how

________________________________________________________________________.

8. People and Nature - A Changing Relationship

In one sentence describe how human activities have changed over the last 200 years.

9. When Is a Need a Want?

Needs are basic to survival, whereas, ' wants ' are things that just make survival

____________________________________________________________.

Each time a need or a want is satisfied, natural resources or __________________

______________________________. This impacts the environment we live in.


List a few ways our “wants” may impact our ecosystems and wildlife. ----

10.No Simple Answers

Setting a forest on fire (a _________________________) is often necessary to maintain a

balance in _____________________________________________________________.

These fires get rid of small trees, leaves, needles and other debris that settles on the

______________________________________________________.

The new growth after a fire becomes food for elk, deer and other animals that need these

_______________________________________________________.

11.The use of DDT (a chemical pesticide) was found to have a negative effect on

_______________________________________________________.

It wasn't until the species was almost lost completely that ____________________________.

DDT was banned and recovery programs were put in place to restore the numbers of

___________________________________________.

12.Swift foxes were accidentally poisoned because certain predators were seen as

__________________________. When the Swift foxes used the poison instead, the

spcies almost _________________________.

Natural control is necessary in _______________________

If this natural control is upset, the impact can have

____________________________

which were never ____________________________________.


Topic 2 – Review

1) What are natural resources?

Example 1:

How do humans use them to meet their needs?

Example 2:

How do humans use them to meet their needs?

1. Complete the chart

Activity Impact on the environment

Positive or negative impact

Alternative action to lessen negative impact

Using plastic bags in you lunch

Mowing the lawn and putting the grass clippings in the garbage

Riding your bike

2. Think of two activities that you perform in a typical day, and describe two impacts that each activity has on your environment. Are those activities wants or needs?


3. How has the relationship between people and environment changed in Alberta?

Topic 3 – Environmental Choices


14.Your Ecological Footprint

The impact you are having on the environment

is your _________________________.

Sustainability means that the resources from

the environment can ____________________

__________________________________.

15. Impact Here and There

To calculate your ecological footprint, you need to determine the total area of land

________________________________and water needed to supply ________________

that you use, as well as absorb all of the _______________________________.

Answer to slide #73 on reducing your ecological footprint-

16. Ways to reduce ecological footprint include:

1. Be aware of the products you

2. Reduce the

3. Reduce the number of

4. Reduce the amount of


Topic 1-3 Review Homework

Name : ___________________________ Class : 7 ___

Topic test is on ________________________________

Reviewing Key Terms

1. Match the description in column A with the correct term in column B. (4 points)

Column Aa. a long-lasting relationship between two

organismsb. all of the interacting living and non-living

parts in an areac. a relationship between two organisms in

which one organism benefits and the other organism is harmed

d. a scientist who studies interactions occurring in the environment

e. materials and products found in nature and used to meet humans' wants and needs

f. using resources no more quickly than they can be renewed and discharging wastes no more quickly than they can be absorbed

g. the total area that would be needed to provide the natural resources used by an individual

h. an inherited characteristic that helps an organism survive in its environment

Column B1. adaptation

2. ecological footprint

3. ecologist

4. symbiosis

5. natural resources

6. sustainability

7. parasitism

8. ecosystem

2. Examine the illustration on page 37 of your text. Choose two organisms and list their needs. How do they meet their needs? (For example, the butterflies eat the nectar from the flowers in the flowerbeds.) (2 point)

2. Adaptations allow organisms to "fit" in their environments. Describe two adaptations that you can see in the illustration.

Explain how they help the organisms. (4 points)


3. In your own words, define the term "ecosystem.” Name three ecosystems in the illustration. (4 points)

5. Humans use technologies to meet their needs and their wants. List three ways that you use technology every day to meet your needs. Describe how one of those technologies uses a natural resource. Does this have an impact on the environment? Explain. (5 points)

6. Explain how Aboriginal people who lived in Canada 200 years ago had different impacts on their environment. (2 points)

science 8 topic 2 – reflection - science with mr....

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