Grade 9 Science
Welcome to Grade 9 science:
During the week of March 16 to 19, we completed our Electricity unit. If you were not in school, you will need to finish the Reading Meters sheet, the Wordsearch, and the Power Problem sheet. There are formulas on the back of the Sources of Electrical Energy notes to use for the Power Problems. Write your cheat sheet. Remember the criteria for writing the cheat sheet: only one side of an 8"x 11" sheet of paper. It can be typed or hand-written. To help you, there is a study guide on the back of the Power notes that we went over in class. Be prepared to write the test when we come back to school. You should finish the worksheets by Wednesday. Work on your cheat sheet a little each day so that it is ready for when we return.
New work as of March 26:
1. Brainstorm ways that you can conserve energy in each of the following categories. Write your list on a sheet of paper.
a) cooking
b) laundry
c) refrigerator or freezer
d) water heater
e) crafts
f) recreation (specify what type of recreation)
2. Find more ways to conserve energy in each of these categories. Do your research by internet and by talking to adult family members. List the websites useful in your research and the family members you asked.
3. In what other areas at home might you be able to conserve energy? Keep an ongoing list and add to it as you think or discover new areas.
4. Read the hydro meter in the next few days. Record the date and the reading. Read the same meter 1 or 2 weeks later. Again, record the date and the reading. By subtracting the numbers, calculate how much electricity your family used in that time.
4. Ask your parent or guardian to show you a recent hydro bill so that you can see how Manitoba Hydro uses the meter reading to calculate how much your family pays to Hydro each month.
Work for the week after Spring Break:
Our new unit is Reproduction.
Look on the internet to find the following: (write your answers in full sentences)
1. What is the purpose of cell division?
2. a) Define asexual reproduction. (In your own words)
b) Find examples of animals and plants that use asexual reproduction.
Start your project (see below)
What is sexual reproduction? Answer this question.
For your project: (Project due when we return to school)
Pick a plant or animal listed below. If you would like to do a different animal or plant that is not listed, please email me first.
-Fish
-Frogs
-Anemones
-Reptiles
-Birds
-Crickets
-Moths
-Earthworms
-Angiosperms (pollination and fertilization)
-Gymnosperms
-Moss
-Liverworts
-Lobster
-Whale
Instructions:
Use the internet to research how your choice of animals or plants reproduce, be sure to include whether they use internal or external fertilization. Make a power point, poster, or a booklet to present to the class when we return to school. The project should include how they use sexual reproduction to reproduce and how they look after their young.
During the week of March 16 to 19, we completed our Electricity unit. If you were not in school, you will need to finish the Reading Meters sheet, the Wordsearch, and the Power Problem sheet. There are formulas on the back of the Sources of Electrical Energy notes to use for the Power Problems. Write your cheat sheet. Remember the criteria for writing the cheat sheet: only one side of an 8"x 11" sheet of paper. It can be typed or hand-written. To help you, there is a study guide on the back of the Power notes that we went over in class. Be prepared to write the test when we come back to school. You should finish the worksheets by Wednesday. Work on your cheat sheet a little each day so that it is ready for when we return.
New work as of March 26:
1. Brainstorm ways that you can conserve energy in each of the following categories. Write your list on a sheet of paper.
a) cooking
b) laundry
c) refrigerator or freezer
d) water heater
e) crafts
f) recreation (specify what type of recreation)
2. Find more ways to conserve energy in each of these categories. Do your research by internet and by talking to adult family members. List the websites useful in your research and the family members you asked.
3. In what other areas at home might you be able to conserve energy? Keep an ongoing list and add to it as you think or discover new areas.
4. Read the hydro meter in the next few days. Record the date and the reading. Read the same meter 1 or 2 weeks later. Again, record the date and the reading. By subtracting the numbers, calculate how much electricity your family used in that time.
4. Ask your parent or guardian to show you a recent hydro bill so that you can see how Manitoba Hydro uses the meter reading to calculate how much your family pays to Hydro each month.
Work for the week after Spring Break:
Our new unit is Reproduction.
Look on the internet to find the following: (write your answers in full sentences)
1. What is the purpose of cell division?
2. a) Define asexual reproduction. (In your own words)
b) Find examples of animals and plants that use asexual reproduction.
Start your project (see below)
What is sexual reproduction? Answer this question.
For your project: (Project due when we return to school)
Pick a plant or animal listed below. If you would like to do a different animal or plant that is not listed, please email me first.
-Fish
-Frogs
-Anemones
-Reptiles
-Birds
-Crickets
-Moths
-Earthworms
-Angiosperms (pollination and fertilization)
-Gymnosperms
-Moss
-Liverworts
-Lobster
-Whale
Instructions:
Use the internet to research how your choice of animals or plants reproduce, be sure to include whether they use internal or external fertilization. Make a power point, poster, or a booklet to present to the class when we return to school. The project should include how they use sexual reproduction to reproduce and how they look after their young.
Work for April 22-28
Watch the following video
Watch the following video
|
Write a short paragraph that summarizes the information in the video. Use these questions to help guide your writing.
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Work for May 4-May 8
Watch the following video.
Watch the following video.
Work for May 11-May 15 Watch the following video. |
Answer these questions as you watch the video:
Answer these questions as you watch the video:
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Work for May 19-May 22
Watch the video and answer the following questions: Khan Academy Video
- Define what is meant by asexual reproduction.
- Define fission. How is this different from cell division (mitosis)?
- Draw and label the fission of an amoeba.
- Draw and label the fission of leishmania.
- Draw and label the fission of plasmodium.
- a) Which organism causes malaria and which organism causes kala azar?
b) Choose 1 of these diseases and describe the cause, symptoms and treatment.
Work for May 25-May 29
Asexual Reproduction in Multicellular Organisms
Answer the following questions after watching the video by Khan Academy
6. Discuss how asexual reproduction in plants is similar to animals. Discuss how they are different.
7. List 3 main advantages of vegetative propagation.
Answer the following questions after watching the video by Khan Academy
- Briefly describe how budding in yeast and fission in bacteria are NOT the same.
- Briefly describe fragmentation. Name 2 multicellular species that can reproduce in this way.
- Why can regeneration NOT be considered as an asexual reproduction method? (lizard example)
- What type of conditions are necessary for a spore to grow into a mature organism?
- Watch this video before answering the next few questions. (Vegetative Propagation) He uses a word that sounds like "whyable" but the word is "viable" meaning living.
6. Discuss how asexual reproduction in plants is similar to animals. Discuss how they are different.
7. List 3 main advantages of vegetative propagation.
Work for June 1 - June 8
Advantages & Disadvantages
We have been investigating both sexual reproduction and asexual reproduction in plants and animals. For this assignment you will be comparing the advantages and disadvantages of each type of reproduction. Review your notes and/or do some scientific inquiry (internet research) to complete a table like the one below:
Type of Reproduction Advantages Disadvantages
Sexual - -
- -
- -
Asexual - -
- -
- -
Fetal Development
Human Conception & Implantation: (Read the following paragraphs)
During fertilization, also called conception, the head of the sperm breaks through the cell membrane of the egg. Even though several sperm may become attached to this membrane, only a single sperm enters the egg. The egg and sperm nuclei combine. The rest of the sperm cell and its flagellum are pinched off by the egg's cell membrane. The union of the egg and sperm create the zygote.
As the zygote moves toward the uterus it undergoes cell division. Around the fourth day, a 16-cell mass enters the uterus where it floats freely for about two days. Around the sixth day after conception, the dividing cell mass has more than 100 cells and is a hollow ball. It implants in the wall of the endometrium and it is now called an embryo.
Rapid growth continues. A yolk sac develops beside the embryo and provides early nourishment. The membrane, called the amnion, develops into a fluid-filled sac. The amniotic fluid surrounds the embryo, protecting it from infection, dehydration, impact, and changes in temperature.
Specialized cells in the embryo combine with cells in the endometrium to form the placenta. Here food and wastes are exchanged through the blood vessels. The umbilical cord connects the embryo to the mother.
ASSIGNMENT:
The pregnancy is divided into three trimesters. Use scientific inquiry (internet research) to create a timeline that describes the major events that occur to the fetus in each trimester.
There are many environmental risk factors that mothers should be aware of to have a healthy baby. Research 3 risk factors and describe how the fetus can be affected by those risk factors.
June 8 - June 12
Cloning Animals
As you read through this article from the National Human Genome Research Institute answer the following questions:
New developments in technology and medical research are happening at a very high rate these days. If it became possible to clone humans what ethical implications arise? How do you feel about this? State your opinion about the pros or cons about cloning humans in a short paragraph.
Advantages & Disadvantages
We have been investigating both sexual reproduction and asexual reproduction in plants and animals. For this assignment you will be comparing the advantages and disadvantages of each type of reproduction. Review your notes and/or do some scientific inquiry (internet research) to complete a table like the one below:
Type of Reproduction Advantages Disadvantages
Sexual - -
- -
- -
Asexual - -
- -
- -
Fetal Development
Human Conception & Implantation: (Read the following paragraphs)
During fertilization, also called conception, the head of the sperm breaks through the cell membrane of the egg. Even though several sperm may become attached to this membrane, only a single sperm enters the egg. The egg and sperm nuclei combine. The rest of the sperm cell and its flagellum are pinched off by the egg's cell membrane. The union of the egg and sperm create the zygote.
As the zygote moves toward the uterus it undergoes cell division. Around the fourth day, a 16-cell mass enters the uterus where it floats freely for about two days. Around the sixth day after conception, the dividing cell mass has more than 100 cells and is a hollow ball. It implants in the wall of the endometrium and it is now called an embryo.
Rapid growth continues. A yolk sac develops beside the embryo and provides early nourishment. The membrane, called the amnion, develops into a fluid-filled sac. The amniotic fluid surrounds the embryo, protecting it from infection, dehydration, impact, and changes in temperature.
Specialized cells in the embryo combine with cells in the endometrium to form the placenta. Here food and wastes are exchanged through the blood vessels. The umbilical cord connects the embryo to the mother.
ASSIGNMENT:
The pregnancy is divided into three trimesters. Use scientific inquiry (internet research) to create a timeline that describes the major events that occur to the fetus in each trimester.
There are many environmental risk factors that mothers should be aware of to have a healthy baby. Research 3 risk factors and describe how the fetus can be affected by those risk factors.
June 8 - June 12
Cloning Animals
As you read through this article from the National Human Genome Research Institute answer the following questions:
- Do clones ever naturally occur? Give 3 examples.
- What are the 3 types of artificial cloning?
- How are genes cloned?
- How are animals cloned? Use the diagram to help you answer this question.
- What animals have been successfully cloned?
- So far, humans and primates have not been cloned. From a technical perspective, why not?
- What are some benefits of cloning animals?
- What are some of the drawbacks of cloning animals?
- How could therapeutic cloning be used in treating disease?
- What are some of the possible drawbacks of therapeutic cloning?
New developments in technology and medical research are happening at a very high rate these days. If it became possible to clone humans what ethical implications arise? How do you feel about this? State your opinion about the pros or cons about cloning humans in a short paragraph.