PP 2
Course ContentWeather
Habari Mwanafunzi! Let's Become Weather Detectives!
Have you ever woken up in the morning, put on your favourite warm sweater because it was chilly, but by lunchtime, you felt as hot as a roasted mahindi (maize)? Or have you ever planned to play football with your friends, only for big, dark clouds to gather and send you running for shelter? That, my friend, is the weather at work! Today, we are going to learn all about the weather and become experts at understanding what is happening in the sky above us.
What is Weather?
Weather is simply what the air outside is like at a certain time and place. Is it hot or cold? Is it wet or dry? Is it calm or windy? The weather can change in just a few hours. Think of it like this: the weather is the mood of the environment for the day!
The main things that make up the weather are:
- The Sun (Sunshine)
- Clouds
- Rain
- Wind
- Temperature (How hot or cold it is)
The Elements of Weather
Let's look at each element like a true detective!
1. The Sun - Our Giant Lamp!
The sun gives us light and heat. When there are no clouds blocking it, we have a sunny day. Sunny days are perfect for playing outside and for drying our clothes!
Example: Think about a very hot and sunny day in a place like Lodwar or Mombasa. The sun is very strong there, and it makes the day very warm. This is great for a swim at the beach!
Here is our friend, the Sun:
\ /
.-.
-- ( ) --
'-'
/ \
2. Clouds - Cotton Wool in the Sky
Clouds are made of tiny, tiny water droplets all floating together in the sky. They are very important for weather.
- White, puffy clouds: These look like cotton wool. They usually mean the weather is fair and it will not rain.
- Dark, grey clouds: These clouds are full of water. When you see them, it is a sign that rain might be on its way! They are common during the rainy season in April (the 'long rains').
A happy, puffy cloud (good weather):
.--.
.-( ).
(___.__)__)
A big, grey rain cloud:
.--.
.-( ).
(__________)
Image Suggestion: A vibrant, colourful digital painting of a Kenyan landscape, like the Great Rift Valley. On one side, the sky is clear blue with a few white, puffy clouds. On the other side, the sky is dark with dramatic, grey rain clouds, showing the contrast in weather.
3. Rain - A Drink for Our Shambas!
When the clouds get too heavy with water, they release it as rain. Rain is very important for our country. It gives water to our plants and animals. Without rain, our farmers in places like Eldoret and Kericho cannot grow maize, sukuma wiki, or tea.
A Farmer's Joy: A young girl named Akinyi lives in Kisumu. Her grandmother has a small shamba (farm). They have been waiting for the rain to plant their beans. One afternoon, Akinyi sees dark clouds and smells the fresh scent of rain on the soil. She runs to her grandmother shouting, "Kesho tuna panda! The rain is here!" They are both very happy because the rain means they will have food.
.--.
.-( ).
(__________)
/ / / /
/ / / /
/ / / /
4. Wind - The Invisible Mover
Wind is moving air. We cannot see the wind, but we can feel it on our skin and see it move things, like leaves on a tree or a flag on a flagpole. A gentle wind is called a breeze, which can feel very nice on a hot day.
Example: If you live near the coast in Malindi, you will feel a cool breeze coming from the ocean. If you are on a farm, you might see the wind making the tall maize plants dance from side to side.
This is a tree on a windy day:
,
/|
/ |
/ |
/ | //
/____| // (Wind blowing)
| | //
| |
Image Suggestion: A cheerful, cartoon-style image of Kenyan children of diverse backgrounds flying a colourful, homemade kite made of plastic bags and sticks in a green, open field. The wind is visibly blowing their hair and the grass around them.
5. Temperature - Hot or Cold?
Temperature tells us how hot or cold the air is. We use a special tool called a thermometer to measure it. When it is hot, the red line in the thermometer goes up. When it is cold, it goes down.
In Kenya, it can be very hot, like in Garissa, or quite cold, like in Limuru or on the slopes of Mt. Kenya, where you need a very warm jacket!
Let's learn to read a simple thermometer:
A Simple Thermometer:
HOT (30°C) | |=======|
(20°C) | |====| <--- The red line stops here!
WARM (10°C) | |==|
COLD ( 0°C) | |
Let's do the math!
1. Find the top of the red line.
2. Look at the number next to it.
3. The temperature is 20 degrees Celsius (20°C). This is a warm and pleasant day!
Let's Be Weather Watchers!
A great way to learn about weather is to observe it every day. We can make a Weather Chart for one week. We draw the symbol for the weather we see each day.
Here is an example of a weather chart:
My Weather Chart
+-----------+------------------+
| Day | Weather Symbol |
+-----------+------------------+
| Monday | Sunny .-. |
| | ( ) |
+-----------+------------------+
| Tuesday | Cloudy .--. |
| | (____) |
+-----------+------------------+
| Wednesday | Rainy / / / |
| | / / / |
+-----------+------------------+
| Thursday | Sunny .-. |
| | ( ) |
+-----------+------------------+
| Friday | Windy // |
| | // |
+-----------+------------------+
Now for some simple math. Let's count the number of sunny days from our chart!
CALCULATION: Counting Sunny Days
1. Look for the "Sunny" symbol on the chart.
2. We see it on Monday. That's 1.
3. We see it again on Thursday. That's 1 more.
4. Let's add them together:
1 (Monday) + 1 (Thursday) = 2
Answer: We had 2 sunny days this week! Good job!
You Are Now a Weather Expert!
Wow! You have learned so much today. You know that weather is what the air outside is like, and you know about the sun, clouds, rain, and wind. Remember to look outside your window every day. What is the weather like? Is it a good day to wear a jacket or to play outside? You are now the official weather detective for your family and friends!
Jambo Mwanafunzi! Let's Become Weather Experts!
Have you ever left home in the morning wearing a warm sweater because it was chilly, but by lunchtime, the sun was shining so brightly you wished you had a t-shirt? That's the weather for you! It's always changing and full of surprises. Today, we are going to go on an exciting journey to understand the weather all around us in our beautiful country, Kenya.
What is Weather?
Think of it this way: Weather is what the air outside is like right now, or over a very short time (like today or this week). It’s the story of our day!
Is it sunny in Kisumu? Is it windy in Marsabit? Is it raining in Nyeri? That is the weather. It tells us if we should carry an umbrella, wear a jacket, or put on our sunglasses.
Here is a simple way to remember: Weather is what we wear for today. Climate is all the clothes we have in our wardrobe for the whole year because we know some months are cold and some are hot. For example, we know that the weather in Limuru is often cold (that's its climate), but a specific Tuesday might be surprisingly sunny and warm (that's the weather for that day).
The Main Elements of Weather
Weather is made up of a few different things working together. Let's look at the most important ones!
-
Sunshine (Jua): This is when the sun is out and not hidden by clouds. Sunny days are warm and bright. They are perfect for drying our laundry outside or playing football with friends!
\ / .-. -- ( ) -- '-' / \ -
Clouds (Mawingu): These are like big, fluffy puffs of cotton in the sky. They are actually made of tiny little water droplets.
- White, puffy clouds usually mean fair weather.
- Dark, grey clouds often mean that rain is on its way!
.--. .-( ). (___.__)__) // Fluffy Cloud (Good Weather) .--. .-( ). (___.__)__) ' ' ' ' ' ' ' ' ' // Rain Cloud -
Rain (Mvua): When the clouds get too full and heavy with water droplets, they release the water, and it falls to the earth as rain. In Kenya, we have the 'long rains' from March to May and the 'short rains' from October to December.
A Farmer's Story: Kamau, a farmer in Machakos, looks at the sky every day in October. He waits for the dark clouds because he knows the 'short rains' are coming. The rain will help his maize and beans to grow tall and strong, so his family will have plenty of food.
-
Wind (Upepo): Wind is simply moving air. It can be a gentle breeze that cools you down on a hot day at the coast in Mombasa, or a very strong wind like the ones that turn the big windmills at the Lake Turkana Wind Power project.
( ( ( ( ( ( ( ( ( ( 咻 咻 咻 ... (Sound of wind blowing) - Temperature (Joto na Baridi): This just means how hot or how cold the air is. In the morning, it might be cold, but at 2 PM, it can get very hot! We wear different clothes depending on the temperature.
Image Suggestion: A vibrant, colourful digital painting of a bustling open-air market in Kenya. People are dressed in light clothing, some with hats. The sun is shining brightly in a clear blue sky, casting sharp shadows. Stalls are filled with fresh green vegetables, red tomatoes, and yellow bananas, showing the bounty of a sunny climate.
How We Measure Weather
Scientists, called meteorologists, use special tools to measure the weather accurately. You can even use some simple ones at school or at home!
1. Thermometer (Measures Temperature)
A thermometer tells us exactly how hot or cold it is. The liquid inside (usually red or silver) goes up when it's hot and down when it's cold. We measure temperature in degrees Celsius (°C).
For example, a cool morning in Nairobi might be 15°C, while a hot afternoon in Lodwar could be 35°C!
Image Suggestion: A simple, clear illustration of an outdoor thermometer. The style is educational and child-friendly. The thermometer shows the red line at 25°C, with a small sun icon next to it to indicate warmth.
2. Rain Gauge (Measures Rain)
A rain gauge is a special container left outside that collects rain. It has markings on the side, like a ruler, to show how many millimetres (mm) of rain have fallen. This helps farmers know if their crops are getting enough water.
Let's imagine we are measuring rainfall at our school for one week. Here's how we would record it:
# Weekly Rainfall Report
Monday: 5 mm
Tuesday: 0 mm (Sunny day!)
Wednesday: 10 mm (Heavy rain)
Thursday: 2 mm
Friday: 0 mm
To find the TOTAL rainfall for the week, we add the numbers:
5 + 0 + 10 + 2 + 0 = 17 mm
So, the total rainfall for the week was 17 mm!
3. Wind Vane (Shows Wind Direction)
Have you ever seen an arrow, sometimes shaped like a cockerel, on top of a roof? That's a wind vane! It spins around and the arrow points to the direction the wind is coming from. If it points to the East, it means there is an easterly wind.
N (North)
|
|
W <------(O)----> E (East) // Arrow points East
|
|
S (South)
This shows the wind is coming FROM the East.
Great Job, Weather Watcher!
Now you know what weather is, what it's made of, and how we can measure it. Paying attention to the weather is important because it helps us plan our day, helps our farmers grow food, and keeps us safe.
Activity Time: Try being a weather watcher for a week! Draw a chart like this in your exercise book and fill it in every day. You can draw the symbols yourself!
| Day | Weather Symbol (Draw it!) | What I Wore | What I Did |
|---|---|---|---|
| Monday | (e.g., A big shining sun) | School uniform, no sweater | Played football outside |
| Tuesday | |||
| Wednesday |
Keep observing the world around you. You are now a fantastic Environmental Activities student and a brilliant weather expert in the making! Safari njema on your learning journey!
Habari Mwanafunzi! Let's Talk About the Weather!
Have you ever left home in the morning wearing a big, warm sweater, only to feel very hot in the afternoon? Or have you seen the sky turn dark grey before big drops of rain start to fall? That changing feeling of the air around us is what we call Weather! Today, we are going on an exciting adventure to become weather detectives and learn all its secrets. Are you ready? Let's go!
What is Weather?
Weather is simply what the air outside is like at a certain time and in a certain place. Think of it like the sky's mood! Sometimes the sky is happy and sunny, sometimes it is calm and cloudy, and sometimes it is crying with rain. The weather in your home in Nairobi can be cool and cloudy, while your cousin in Mombasa is feeling hot and sunny at the very same time!
For example, during the school holidays in August, it might be very cold and windy in Limuru, which is perfect for staying inside with a cup of hot chocolate. But in Malindi, the weather could be warm and sunny, perfect for playing on the beach!
The Main Ingredients of Weather
Just like when making mandazi you need flour, sugar, and other ingredients, weather also has its own special ingredients. We call these the elements of weather.
- Sunshine (The Sun's Big Smile)
- Clouds (The Sky's Cotton Wool)
- Rain (The Sky's Tears of Joy for our Farms)
- Wind (The Air's Invisible Dance)
- Temperature (How Hot or Cold it Feels)
Let's Look at Each Ingredient!
1. Sunshine
The sun gives us light and heat. When there are few or no clouds, we have a sunny day! Sunny days are great for playing outside, for drying our clothes, and for our farmers (wakulima) to dry their maize and beans after harvesting.
\ /
-- ( ) --
/ \
A bright, happy sun!
Image Suggestion: A vibrant, cheerful illustration of Kenyan children playing 'kati' in a grassy field under a bright, smiling sun. In the background, there are acacia trees and a woman is laying out colourful lessos to dry. The style should be colourful and cartoonish, suitable for a children's textbook.
2. Clouds
Clouds are like big, fluffy puffs of cotton wool floating in the sky. They are made of tiny, tiny water droplets. When the sky is full of clouds, we call it a cloudy day. It can make the day feel cooler because the clouds block some of the sun's heat. Sometimes, dark clouds are a sign that rain is coming!
.--.
( )
(______)
A big, fluffy cloud.
3. Rain
When the water droplets in the clouds become too heavy, they fall to the earth as rain. Rain is so important! It gives water to our shambas so that our crops like sukuma wiki, maize, and beans can grow. In Kenya, we have special names for the rainy seasons:
- Masika: The long rains (usually around March to May).
- Vuli: The short rains (usually around October to December).
.--.
( )
(______)
/ / / /
Rain falling from a cloud.
4. Wind
You can't see wind, but you can feel it and see what it does! Wind is just moving air. It can be a gentle breeze that rustles the leaves on a tree, or a strong wind that can fly a kite high in the sky. Near Lake Turkana, the wind is so strong that we use it to make electricity with giant windmills!
~ ~ ~ ~ >
~ ~ ~ >
~ ~ ~ ~ >
Lines showing the wind blowing.
5. Temperature
Temperature tells us how hot or cold the air is. We use a special tool called a thermometer to measure it. When the temperature is high, the weather is hot. When the temperature is low, the weather is cold.
Let's do some simple maths! A weather detective sometimes needs to calculate the change in temperature.
Step-by-step calculation: Finding the Temperature Difference
Imagine in Nyahururu, the temperature in the morning was 12°C (degrees Celsius).
By the afternoon, the sun was out and it got warmer, reaching 20°C.
What is the difference in temperature?
Formula: Afternoon Temperature - Morning Temperature
Step 1: Write down the afternoon temperature.
20°C
Step 2: Write down the morning temperature.
12°C
Step 3: Subtract the morning temperature from the afternoon temperature.
20 - 12 = 8
Answer: The temperature increased by 8°C.
Let's Be Weather Detectives!
Your fun activity is to watch the weather! You can make a simple Weather Chart in your exercise book to record what you see every day. This is what scientists who study weather (called meteorologists) do!
My Weather Chart
+-----------+---------------------+
| Day | What was the weather? |
+-----------+---------------------+
| Monday | (Draw a sun) |
+-----------+---------------------+
| Tuesday | (Draw a cloud) |
+-----------+---------------------+
| Wednesday | (Draw rain) |
+-----------+---------------------+
Image Suggestion: A friendly, animated Kenyan woman standing in front of a large screen showing a weather map of Kenya. She is pointing to Nairobi with a smile and a pointer stick. She is wearing professional but colourful African-print attire. The style is modern and educational.
Great job, mwanafunzi! You have learned so much about weather today. You know what it is, its ingredients, and how to observe it. The next time you step outside, look up at the sky and think: "What is the weather telling me today?" Keep observing and stay curious!
Pro Tip
Take your own short notes while going through the topics.