Science for Grade 1
1 Introduction to Science
1-1 What is Science?
1-2 Importance of Science in Daily Life
1-3 Basic Scientific Tools and Equipment
2 Observing and Describing
2-1 Observing Objects and Events
2-2 Describing Objects Using Senses
2-3 Recording Observations
3 Classifying and Grouping
3-1 Understanding Classification
3-2 Grouping Objects Based on Similarities
3-3 Using Classification Keys
4 Measuring and Comparing
4-1 Introduction to Measurement
4-2 Measuring Length, Weight, and Volume
4-3 Comparing Measurements
5 Exploring Materials and Substances
5-1 Identifying Common Materials
5-2 Properties of Materials (e g , hardness, flexibility)
5-3 Changes in Materials (e g , melting, dissolving)
6 Investigating Forces and Motion
6-1 Understanding Forces
6-2 Observing Motion
6-3 Simple Machines (e g , lever, pulley)
7 Exploring Living Things
7-1 Identifying Plants and Animals
7-2 Basic Needs of Living Things
7-3 Life Cycles of Plants and Animals
8 Understanding the Environment
8-1 Ecosystems and Habitats
8-2 Interactions Between Living Things and the Environment
8-3 Importance of Biodiversity
9 Weather and Climate
9-1 Observing Weather Patterns
9-2 Understanding Climate
9-3 Weather Instruments and Their Use
10 Safety in Science
10-1 Importance of Safety in Science Experiments
10-2 Handling Equipment Safely
10-3 Emergency Procedures in the Science Lab
Observing Weather Patterns

Observing Weather Patterns

1. What is Weather?

Weather is the day-to-day conditions of the atmosphere. It includes things like temperature, humidity, wind, and precipitation (rain, snow, etc.). Weather can change from day to day and even from hour to hour.

Example: On Monday, it might be sunny and warm, but on Tuesday, it could be cloudy and rainy.

2. Temperature

Temperature is how hot or cold it is outside. We measure temperature in degrees using tools like thermometers. High temperatures feel hot, and low temperatures feel cold.

Example: In the summer, the temperature might be 30 degrees Celsius, which feels very hot. In the winter, it might be -5 degrees Celsius, which feels very cold.

3. Humidity

Humidity is the amount of water vapor in the air. High humidity means there is a lot of moisture in the air, which can make it feel hotter. Low humidity means there is less moisture, which can make it feel cooler.

Example: On a humid day, you might feel sweaty and sticky because the air is full of water vapor. On a dry day, your skin might feel dry and cool.

4. Wind

Wind is the movement of air. It can be gentle, like a breeze, or strong, like a gust. Wind can change direction and speed throughout the day.

Example: A gentle breeze might make the leaves on trees move softly. A strong wind might blow your hat off and make it hard to walk.

5. Precipitation

Precipitation is any form of water that falls from the sky, like rain, snow, sleet, or hail. Different types of precipitation happen in different weather conditions.

Example: On a rainy day, you might need an umbrella to stay dry. On a snowy day, you might need boots and a coat to stay warm and dry.

6. Clouds

Clouds are collections of tiny water droplets or ice crystals in the sky. They come in different shapes and sizes and can tell us about the weather.

Example: A fluffy, white cloud might mean it's a sunny day. A dark, thick cloud might mean it's going to rain soon.

7. Weather Patterns

Weather patterns are the regular ways that weather changes over time. By observing these patterns, we can predict what the weather will be like in the future.

Example: In the spring, you might notice that it rains more often. In the fall, you might notice that the days get shorter and cooler.

8. Observing Weather

Observing weather means paying attention to the changes in the sky, temperature, wind, and precipitation. By keeping a weather journal, you can track these changes and learn about weather patterns.

Example: Every day, you can write down the temperature, whether it's sunny or cloudy, and if it rained or snowed. After a few weeks, you'll start to see patterns in the weather.

9. Importance of Observing Weather Patterns

Understanding weather patterns helps us prepare for different weather conditions. It also helps us appreciate the natural world and how it changes over time.

Example: If you know it's going to rain tomorrow, you can bring an umbrella to school. If you know it's going to be cold, you can wear a warm coat.