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أجيبي عن النشاط الثاني عشر

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1. If you were asked to come up with a creative idea to save the environment from pollution, what would be your plan?

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2.  I will write a story of a famous figure who is interested in the environment and pollution.

Make sure to:

-Write between 100-120 words

-Use the correct tense

-Introduce your famous figure’s name, occupation, place of living, his/her cause
-Justify your choice. (Why did you choose him/her)

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Would you like to be a celebrity? Why? Why not?

Communication is one of the 21st century skills. It helps you to convey your ideas and thoughts effectively.

Powerful speakers such as celebrities can send effective messages to people about global problems, such as saving the environment from pollution. Many celebrities have started campaigns to save the globe from pollution.

Leonardo DiCaprio, a famous actor, was involved in a series of environmental causes, forest preservation, clean water access and renewable energy. He established a foundation and donated over $30 million toward restoring balance to threatened ecosystems communities. DiCaprio produced a documentary film on global warming, entitled the 11th Hour.

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نسرين خليل

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نسرين خليل

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اميرة
النشاط10

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اميرة
النشاط10

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1. I will answer comprehension questions.

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1. I will answer comprehension questions.

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(a)  What do electrical signals do?
_____________________________________________________________________

(b)  Explain what happens when you see a fire by referring to the 3 functions of neurons. ___________________________________________________________________________

(c) What did you expect the article to be about when you read the title?

____________________________________________________________________________

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Pre-question: Have you ever thought about what happens when you are in danger?

Read this article about the neurons, the basic functional units of the nervous system that generate electrical signals. The signals transmit information over long distances.

There are 3 basic functions of neurons:

1. Receive signals or information.

2. Determine whether or not the information should be passed along

3. Communicate signals to target cells.

The fight or flight response is an automatic physiological reaction to a physical danger, such as encountering a growling dog. The perception of threat activates the nervous system and prepares the body to fight or flee. This results in an increase in heart rate, blood pressure, and breathing rate. After the threat is gone, it takes between 20 to 60 minutes for the body to return to its pre-arousal levels.

Some people still feel the threat due to what is called phobia. A person who is terrified of heights might experience stress response if they have to go to the top floor of a skyscraper to attend a meeting. Their body might go on high alert, with their heartbeat and respiration rate increasing.

The information is taken from these resources:

https://www.khanacademy.org/science/biology/human-biology/neuron-nervous-system

https://www.verywellmind.com/what-is-the-fight-or-flight-response

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شهد محمد ياسر

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3.   I will explain what happens to the piece of butter in the picture  in different tenses :

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3.   I will explain what happens to the piece of butter in the picture  in different tenses :

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a)  Using the simple present

______________________________________________________________________

(b)  Using the simple past
______________________________________________________________________

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Nora realized now why her mother adds little milk to the hot cup of tea. By doing that tea becomes cooler.

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Nora realized now why her mother adds little milk to the hot cup of tea. By doing that tea becomes cooler.

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2.    I will explain why the text has two different tenses: the simple past and the simple present.

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1.    I will complete the text by adding the missing words from the list: (different, equilibrium, warmer, curious, definition) 

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1.    I will complete the text by adding the missing words from the list: (different, equilibrium, warmer, curious, definition) 

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As Nora studied about thermal ------------ in physics, she became ------------- to read more about this phenomenon and find out examples from daily life. Next day, she went to the school library and searched for the definition of thermal equilibrium in one of the encyclopedias. The ------------- is: “When two bodies that are at ----------- temperatures contacted, the one that is ------------ yields part of its energy to the one with the lowest temperature, to the point where both temperatures are equal.”

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Looking back: Can you explain this fact based on what you studied in physics: “Ice cube isn’t cooling your drink; your drink is heating the ice cube?”

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Looking back: Can you explain this fact based on what you studied in physics: “Ice cube isn’t cooling your drink; your drink is heating the ice cube?”

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النشاط التاسع بعنوان الفيزياء و الحمّى

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أجيبي عن النشاط الجديد لجسور التعلم

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عنوان النشاط الجديد هو الحموض و القواعد في حياتنا

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النشاط الجديد هو النشاط الثامن

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طالبات الصف التاسع العزيزات
الرجاء الإجابة عن أسئلة النشاط الجديد لجسور التعلم

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2.     I will answer comprehension questions:

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2.     I will answer comprehension questions:

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(a)  Which civilization used a paste to clean their teeth ,first?_________________________________________________________________________(b)  When was the first produced toothpaste ready in markets?_________________________________________________________________________(c)   What are the components of a toothpaste?             ___________________________________________________________________________

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1. I will choose a suitable word from the text and write it next to its meaning.

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1. I will choose a suitable word from the text and write it next to its meaning.

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(a)  sour and sharp to the taste
(                    )

(b)  substances that react with acids to form salt  (                           )

(c)   orange, lemon, and grapefruit   (                        )

(d)  connected with buying and selling, and making a profit               (                       )

(e)   substances used for polishing or cleaning a hard surface.  (           )

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There are many examples of acids and bases in the products that you use in your daily life, such as: citrus fruit, toothpastes, vinegar, baking soda, soap, and cleaning products.

First toothpaste in history

The Egyptians were the first people to use a paste to clean their teeth around 5000 BC. But the first modern toothpaste was invented in 1824 by the dentist, Peabody. The first commercially produced toothpaste was sold in a jar in 1873.

Toothpastes mainly contain water, abrasives, including aluminum hydroxide, calcium hydrogen phosphates, calcium carbonate, silica, hydroxyapatite and fluoride.

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الرجاء قراءة النص ثم

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الرجاء قراءة النص ثم الإجابة عن الأسئلة
إضافة الحل عن طريق إشارة + الموجودة في الأسفل

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People over time have thought of different ways and tools to make their lives easier. That was the reason behind the invention of
winches and pulleys that you  studied in physics.
Pulleys made life easier
Like all simple machines, the origin of the pulley system is unknown. It goes back to 1500 BC, to the
people in Mesopotamia who were using rope pulleys for lifting water.
Pulleys work by trading distance for effort and changing the direction of the force. For example, using
two pulleys to lift a weight, it only needs half the force to lift it as it would with one pulley, however if the weight was being lifted one
metre high, two metres of rope would be needed. This is called the ‘mechanical advantage' and can be
increased by adding more pulleys into the block and tackle system.
Pulleys were responsible for the invention of the crane. The first recorded cranes appeared in Greece around the late 6th century
BC, now it is a tool that most of us see on an almost daily basis.

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Resources

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2. I will choose one of the pulleys applications from the context and explain orally how it works to a family member or a friend.
3. I will give examples of 3 English proverbs and explain them on a piece of paper.
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Examples of pulleys applications in our daily life:
- Sails on sailboats are raised and lowered using pulleys.
- Wells use the pulley system to lift the bucket out of the well.
- Curtains at a theatre are moved using pulley systems that pull the curtains apart.
- Escalators use pulley systems to function.
The material in the text is based on an article called, “How Pulleys Changed the World?”
Follow the link to read and get extra information.
https://blog.ronstanindustrial.com/how-pulley-system-changed-the-world