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Knowledge Organiser –– Year1 Science – Seasonal changes

What are the four and in which of the do they occur? , January and . , and . , July and August. , and .

Vocabulary Definition Seasonal Changes Seasons Spring, Summer, Autumn and  In autumn the turns colder and often . The start Winter. to change colour and fall off the trees. Seasonal The change in weather and Change environment from to  In winter the weather is and we sometimes get and . season. The trees have no leaves. Weather The state of the at a particular place and time as regards  In spring the weather usually turns warmer, trees begin to grow heat, cloudiness, dryness, sunshine, their leaves, plants start to flower and young animals such as chicks wind, , etc. and lambs are born. Forecast The prediction of weather. Temperature The measurement of heat using  In summer the weather is usually hot and trees have full green degree C ̊. leaves. The term for the averaging of Clever day information: All seasons are controlled by the differential heating of the atmospheric conditions over longer due to the way it faces the . The tilt of the Earth's axis means that in Summer the Earth faces the Sun at a lower angle than in Winter, which causes the country to become hotter. periods of time. Elements of weather Images Includes wind, temperature, pressure, humidity, , and .

Features of weather

rain snow ice frost thunder lightening sunshine cloudy showers overcast wind sleet foggy