Air in Motion Meaning and Effects of Wind Basic Science Primary 3 Second Term Lesson Notes Week 2
Subject: Basic Science
Class: Primary 3
Term: Second Term
Week: Week 2
Topic: Meaning, Causes, and Effects of Wind
Duration: 45 minutes
Entry Behaviour: Students are expected to have basic knowledge of air and its properties.
Key Words: Wind, air, motion, temperature, pressure, atmosphere, breeze, gust, kite, balloon, windmill.
Behavioural Objectives: By the end of the lesson, students should be able to:
- Define wind as air in motion.
- Identify the causes of wind.
- Describe the effects of wind on living and non-living things.
Embedded Core Skills: Observation, description, explanation, critical thinking.
Learning Materials:
- Pictures or diagrams illustrating wind and its effects.
- Whiteboard and markers.
- Flashcards with key vocabulary.
- Video clips demonstrating wind in action (optional).
Content:
When the air moves from one place to another, we call it wind. Sometimes it can be gentle, like a soft breeze that makes the leaves on trees rustle. Other times, it can be strong and powerful, like during a storm.
Wind happens because of differences in temperature and pressure in the Earth’s atmosphere. When the air gets heated by the sun, it becomes lighter and rises up. Cooler air rushes in to take its place, and that movement creates wind.
We can feel the wind on our skin, and we can see its effects on things around us, like swaying trees or flying kites. Wind is important for many things in nature, like spreading seeds, moving clouds, and even generating electricity with wind turbines.
So, remember, wind is just air that’s in motion, moving from one place to another. It’s a natural part of our world, and it’s pretty fascinating to learn about!
Effects of Wind:
- On Humans:
- Wind can make us feel cool on a hot day.
- It can mess up our hair when it’s blowing strongly.
- Wind helps in drying clothes faster when we hang them outside.
- On Non-Living Things:
- Kites: Wind helps kites fly high up in the sky. The stronger the wind, the higher the kite can go!
- Balloons: Wind can carry balloons away if we let them go. It’s like they’re going on an adventure!
- Windmills: Windmills use wind to generate electricity. The wind makes the blades spin, which then powers machines and lights up our homes.
Meaning and Causes of Wind:
- Meaning: Wind is the movement of air from one place to another. It’s like when you blow air out of your mouth, but on a bigger scale.
- Causes: Wind happens because of differences in temperature and pressure in the Earth’s atmosphere. When the sun heats up the air, it becomes lighter and rises. Cooler air rushes in to take its place, creating wind.
Remember, wind is like a gentle breeze or a powerful force of nature, and it can affect both living and non-living things around us! 🌬️
- Wind is also known as _____. a) Rain b) Air in motion c) Sunlight d) Snow
- Wind can make us feel _____ on a hot day. a) Cold b) Warm c) Hungry d) Happy
- Wind can mess up our _____ when it’s blowing strongly. a) Clothes b) Hair c) Shoes d) Toys
- Wind helps kites _____ up in the sky. a) Fall b) Fly c) Swim d) Sleep
- Balloons can be carried away by _____. a) Cars b) Trucks c) Wind d) Bicycles
- Windmills use wind to generate _____. a) Water b) Electricity c) Food d) Music
- Wind makes the blades of windmills _____. a) Spin b) Stop c) Float d) Dance
- Wind is the movement of _____ from one place to another. a) Water b) Fire c) Air d) Soil
- Wind happens because of differences in _____ in the Earth’s atmosphere. a) Color b) Temperature and pressure c) Size d) Weight
- When the sun heats up the air, it becomes _____ and rises. a) Heavier b) Lighter c) Thicker d) Stronger
- Cooler air rushes in to take its _____, creating wind. a) Time b) Place c) Space d) Position
- Wind can affect both _____ and non-living things. a) Only living b) Only non-living c) Plants d) Both living
- Wind can _____ clothes faster when we hang them outside. a) Dry b) Wet c) Clean d) Iron
- Wind is a natural _____ of our world. a) Part b) Animal c) Person d) Vehicle
- Wind can make _____ spin, which then powers machines. a) Cars b) Bicycles c) Blades of windmills d) Toys
Presentation
- Revision: The teacher revises the previous topic on air and its properties.
- Introduction of New Topic: The teacher introduces the concept of wind as air in motion. Students discuss their experiences with wind and its effects.
- Teacher’s Activities:
- Define wind and explain that it is caused by differences in temperature and pressure in the Earth’s atmosphere.
- Discuss various causes of wind, such as the heating of the Earth’s surface by the sun.
- Describe the effects of wind on living things (e.g., cooling effect, spreading of seeds) and non-living things (e.g., flying kites, generating electricity with windmills).
- Learners’ Activities:
- Students listen attentively to the teacher’s explanation.
- They participate in discussions about their experiences with wind.
- Students ask questions and share their observations.
- Assessment: The teacher assesses students’ understanding through oral questions and class participation.
- Evaluation:
- What is wind?
- What causes wind?
- How does wind affect living things?
- Give an example of how wind can affect non-living things.
- Why do kites fly in the sky?
- How do windmills generate electricity?
- What happens to the air when it gets heated by the sun?
- Can you describe the feeling of wind on a hot day?
- What are the two main causes of wind?
- Why is wind important for plants?
Conclusion: The teacher concludes the lesson by summarizing the key points and encouraging students to observe the effects of wind in their environment. Students are reminded to pay attention to the wind’s direction and strength in their everyday experiences.