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Weather and Sky | Science Olympiad for Class 1 PDF Download
Our Earth is surrounded by a layer of air which is called atmosphere. Sometimes the air becomes hot and sometimes it becomes cold. This change in atmosphere is known as weather. It keeps changing daily and even from hour to hour.
Types of Weather
- Rainy
- Stormy
- Cloudy
- Partly Cloudy
- Sunny
- Snowy
- Warm Temperature
- Cold Temperature
- Hot Temperature
- Freezing Temperature
The Sky
We live on Earth and see sun, moon and stars in the sky. They are called heavenly bodies. The sun is a star, the earth is a planet and moon is a natural satellite. All the heavenly bodies in space are combined together to make a universe.
The Sun
We see the sun in the sky. The sun is a big ball of fire. It gives us light and heat. Plants need sunlight to live and grow. The sun rises in the east and sets in the west. The position of the sun affects the size of a shadow. A person or object blocks more light when the sun is low in the sky. More blocked light makes shadows longer. Less light is blocked when the sun is high in the sky. This makes shadows shorter.
Properties of Shadow
- They are always dark in colour.
- They are formed opposite to the source of light.
- They are formed when an opaque object comes between the source of light and the screen.
The Moon and the Stars
At night, we see the moon shining brightly. We also see many stars twinkling in the sky. The moon moves around the Earth. There is no life on the moon.
We know that the moon is the natural satellite of the Earth. The moon doesn’t emit its own light. It reflects the light of the sun. As the moon orbits or circles the Earth, the phase changes.
The different phases of the moon starting from the new moon are:
- New moon
- Waxing Crescent
- First quarter
- Waxing Gibbous
- Full
- Waning Gibbous
- Third quarter
- Waning Crescent
- Full moon
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FAQs on Weather and Sky - Science Olympiad for Class 1
| 1. What is the definition of weather? |  |
Ans. Weather refers to the atmospheric conditions in a specific place at a specific time, including factors such as temperature, humidity, precipitation, wind speed, and visibility. It can change from minute to minute and day to day.
| 2. How do meteorologists predict the weather? | |
Ans. Meteorologists use various tools and techniques to predict the weather. They analyze data from weather satellites, radar, and weather stations, and utilize computer models to simulate atmospheric conditions. This information helps them forecast short-term and long-term weather patterns.
| 3. What are the different types of weather phenomena? | |
Ans. Different types of weather phenomena include rain, snow, sleet, hail, thunderstorms, tornadoes, hurricanes, and droughts. Each phenomenon occurs under specific atmospheric conditions and can have varying impacts on the environment and human activities.
| 4. How does climate differ from weather? | |
Ans. Climate refers to the long-term average of weather conditions in a particular area, typically assessed over a period of 30 years or more. In contrast, weather describes short-term variations in atmospheric conditions. For example, a region may have a tropical climate but experience a cold front resulting in temporary chilly weather.
| 5. Why is understanding weather important? | |
Ans. Understanding weather is crucial for various reasons, including agriculture, transportation, public safety, and disaster preparedness. Accurate weather forecasts help individuals and communities make informed decisions, reduce risks associated with severe weather events, and enhance overall quality of life.
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