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تذكري أن الاحتكاك :

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الاحتكاك : هي قوة تحاول إيقاف الأشياء المنزلقة عند تحرك سطحين متلاصقين باتجاهين متعاكسين

يمكن أن يكون الاحتكاك مفيدا ويمكن أن يكون مشكلة

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حددي ما اذا كان الاحتكاك مفيد أم يعد مشكلة في الصور التالية

يعد مشكلة

مفيد

1

2

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بإعتقادك ايهما أسهل تحريك الصندوق على السطح (أ) أم على السطح (ب) ؟ وما السبب؟

أ

ب

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استقصاء الاحتكاك

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الاهداف

أستطيع أن أصف الفرق في الاحتكاك بين جسم ما وأسطح مختلفة.

أستطيع أن أقوم بعمل قياسات دقيقة لاختبار الأفكار والتنبؤات

أستطيع أن أخطط وأرسم جدول منظم وتمثيل بياني بالأعمدة يتسم بالدقة

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نشاط 4-7

الهدف : كيف تؤثر طبيعة السطح في الاحتكاك

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كيف تقلل محامل الكرات في الالات من الاحتكاك؟

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مما سبق تعلمنا أن :

1- قوة الاحتكاك بين سطحين خشنين أكبر من قوة الاحتكاك بين سطحين أملسين

2- قوة الاحتكاك على الأسطح الكبيرة أكبر من قوة الاحتكاك على الاسطح الصغير

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التقويم الختامي

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الواجب حل ورقة العمل 4-7 من كتاب النشاط

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Introduction

You can give a brief description of the topic you want to talk about here. For example, if you want to talk about Mercury, you can say that it’s the smallest planet in the entire Solar System

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Types of energy

Kinetic energy

Potential energy

Venus has a beautiful name and is the second planet from the Sun. It’s hot and has a poisonous atmosphere

Mercury is the closest planet to the Sun and the smallest one in the Solar System—it’s only a bit larger than the Moon

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Infographic kinetic energy

Energy in

Potential energy

Energy out

Kinetic energy

Kinetic energy

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Rotational

Transnational

Types of kinetic energy

Vibrational

Mercury is the closest planet to the Sun and the smallest of them all

Venus has a beautiful name and is the second planet from the Sun

Despite being red, Mars is actually a cold place. It’s full of iron oxide dust

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Where does that energy come from?

Mechanical energy

Electrical energy

Thermal energy

Radiant energy

Despite being red, Mars is a cold place

Venus is the second planet from the Sun

Jupiter is the biggest planet of them all

Saturn is a gas giant and has several rings

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Thermal and sound energy

Thermal

Sound

Saturn is the second-largest planet in the Solar System

Earth is the beautiful planet where we all live

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Mars

Facts about kinetic energy

Mercury

Venus

Neptune

Jupiter

Saturn

Mars is actually a cold place. It's full of iron oxide dust

It’s the fourth-largest object by diameter in the Solar System

Mercury is the closest planet to the Sun and the smallest one

Venus has a beautiful name and very high temperatures

Jupiter is a gas giant and the biggest planet in the Solar System

It was named after the Roman god of wealth & agriculture

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Awesome words

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—Someone Famous

“This is a quote. Words full of wisdom that someone important said and can make the reader get inspired.”

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A picture always reinforces

the concept

Images reveal large amounts of data, so remember: use an image instead of a long text. Your audience will appreciate it

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150,000

Big numbers catch your audience’s attention

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Potential energy vs. Kinetic energy

Potential energy

Kinetic energy

Mercury is the closest planet to the Sun and the smallest one in the Solar System—it’s only a bit larger than the Moon

Venus has a beautiful name and is the second planet from the Sun. It’s hot and has a poisonous atmosphere

KE

PE

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9h 55m 23s

333,000

386,000 km

Is Jupiter's rotation period

Earths is the Sun’s mass

the distance between Earth and the Moon

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Examples of objects with KE

Ball

Meteors

Walking

Airplane

Falling

Roller Coaster

Neptune is far away from us

Saturn is composed of hydrogen and helium

Mars is actually a very cold place

Venus is the second planet from the Sun

Jupiter is the biggest planet of them all

Mercury is the closest planet to the Sun

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50%

Mercury

Venus

Mars

30%

20%

Let’s use some percentages

Mercury is the closest planet to the Sun

Venus is the second planet from the Sun

Mars is actually a very cold place

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Equation for calculating kinetic energy

KE = 1/2 mv2

m = mass and v = velocity

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Kinetic energy infographic

Potential energy

Kinetic energy

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You can use this graph

Follow the link in the graph to modify its data and then paste the new one here. For more info, click here

Jupiter

Jupiter is the biggest planet of them all

Saturn

It’s composed of hydrogen and helium

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This is another graph

Follow the link in the graph to modify its data and then paste the new one here. For more info, click here

Class A

Jupiter is the biggest planet of them all

Class B

Mercury is the closest planet to the Sun

Class C

Saturn is composed of hydrogen and helium

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Forms of kinetic energy

M

Mechanical

Mercury is the smallest planet

E

Electrical

Venus is the second planet from the Sun

L

Light

Mars is actually a very cold place

T

Thermal

Jupiter is the biggest planet of them all

S

Sound

Saturn is the only planet with rings

Easy way to remember the forms of energy

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You can use this diagram too

Electrical

Nuclear

Light (Radiant)

Chemical

Heat (thermal)

Gravitational

Energy types

Potential

Kinetic

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Types of KE

Sound

Mechanical

Electrical

Saturn is composed of hydrogen and helium

Neptune is the fourth-largest planet

Earth is the only planet known to harbor life

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This is a map

Venus

Venus has very high temperatures

Jupiter is the biggest planet

Saturn is a gas giant with rings

Jupiter

Saturn

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Awesome words

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Example kinetic and potential energy

Venus has a beautiful name and is the second planet from the Sun. It’s terribly hot, even hotter than Mercury, and its atmosphere is extremely poisonous. It’s the second-brightest natural object in the night sky after the Moon

h

v

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A timeline always works fine

Jupiter

Jupiter is a gas giant and the biggest planet

Mars

Mars is actually a cold place. It’s full of iron

Mercury

Mercury is the closest planet to the Sun

Saturn

Saturn is composed of hydrogen and helium

1

2

3

4

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20%

Mass

Velocity

80%

Some percentages

Jupiter is the biggest planet of them all

Despite being red, Mars is a cold place

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Quiz: which one is kinetic energy?

Nuclear

Chemical

Gravitational

Electrical

Jupiter is a gas giant and the biggest planet

Mars is actually a cold place. It’s full of iron

Mercury is the closest planet to the Sun

Saturn is composed of hydrogen and helium

D

C

B

A

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Correct!

Saturn is composed of hydrogen and helium

D

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Let’s do an exercise

Circle T if the statement is TRUE or F if it is FALSE. You may use a dictionary to help you

a) Things in motion have kinetic energy

b) Light is a form of matter

c) Electrical energy travels through wires

d) Energy cannot be moved from one place to another

T F

T F

T F

T F

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Another exercise

Different forms of energy in everyday life

Form of Energy

Example

Icon

Answer here

Light Bulb, Sun

Answer here

Food Battery

Answer here

Music

Answer here

Nuclear Power

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These are some references

Mercury is the closest planet to the Sun and the smallest in the Solar System

  • You can list your reference websites or publications here
  • You can list your reference websites or publications here
  • You can list your reference websites or publications here
  • You can list your reference websites or publications here

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About the topics

03

You can enter a subtitle here if you need it

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—Someone Famous

“This is a quote, words full of wisdom that someone important said and can make the reader get inspired.”

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2,369

Big numbers catch your audience’s attention

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Types of Kinetic energy

Radiant

Sound

Thermal

Electrical

Venus has a beautiful name and high temperatures

Despite being red, Mars is actually a cold place

Earth is the only planet known to harbor life

Jupiter is the biggest planet in the Solar System

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Some questions

What is KE?

What is the formula?

How to measure it?

Despite being red, Mars is actually a cold place

Jupiter is the biggest planet in the Solar System

Venus has a beautiful name, but also high temperatures

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Activities

04

You can enter a subtitle here if you need it

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Activity 1: Bottle racer

  • Plastic bottle
  • PVC pipe
  • Electric drill
  • Hammer
  • Box nail
  • Paper clips
  • Drinking straw

Materials

Steps

Assembly

Jupiter is a gas giant and the biggest planet

1

Bend

Mercury is the smallest planet of them all

2

Pull

Venus has extremely high temperatures

3

Screw

Earth is the only planet known to harbor life

4

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Questions: Activity 1

What’s going on?

The surface affects?

Write your answer here

Write your answer here

Q1

Q2

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Activity 2: Select the correct option

Click on the white box

Which object has Kinetic energy?

Plant

Meteor

Chair

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Oops, wrong!

Plant

Meteor

Chair

Try again!

Which object has Kinetic energy?

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Correct!

Plant

Meteors

Chair

Which object has Kinetic energy?

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Activity 3: Question quiz

Kinetic energy is the energy an object has due to its…

1

Position

Weight

Mass

Gravity

Motion

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Oops!

Kinetic energy is the energy an object has due to its…

1

Position

Weight

Mass

Gravity

Motion

Try again!

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Correct!

Kinetic energy is the energy an object has due to its…

1

Position

Weight

Mass

Gravity

Motion

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Activity 3: Question quiz

KE can be calculated from what measurements?

2

Mass and power

Velocity and mass

Acceleration and weight

Speed and momentum

Acceleration and velocity

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Oops!

Kinetic energy is the energy an object has due to its…

2

Mass and power

Velocity and mass

Acceleration and weight

Speed and momentum

Acceleration and velocity

Try again!

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Correct!

Kinetic energy is the energy an object has due to its…

2

Mass and power

Velocity and mass

Acceleration and weight

Speed and momentum

Acceleration and velocity

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Our teachers

John Doe

Sam Jane

Becca Bones

You can speak a bit about this person here

You can speak a bit about this person here

You can speak a bit about this person here

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Desktop software

You can replace the image on the screen with your own work. Right-click on it and then choose "Replace image" so you can add yours

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Tablet app

You can replace the image on the screen with your own work. Right-click on it and then choose "Replace image" so you can add yours

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Mobile web

You can replace the image on the screen with your own work. Right-click on it and then choose "Replace image" so you can add yours

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Does anyone have any questions?

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