Science activity, suitable for students in the fifth year of elementary school, with questions about Water on the planet.
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SCHOOL: DATE:
PROF: CLASS:
NAME:
Water is essential for the development of all living things. Animals, plants, fungi and microorganisms have water in their cells, so they need it to live. About 60% of the human body is made up of water. In addition to using water for food, human beings use it for other purposes, such as personal hygiene, industrial production, leisure, etc.
Water covers about 70% of the earth's surface. In nature, it is possible to find it in three physical states: gaseous, solid and liquid. In different environments, water changes continuously from one state to another, what we call the water cycle or hydrological cycle.
Water can be fresh or salty. The water we use for drinking, bathing, brushing teeth and watering crops and fresh water. Salt water is one that contains a large amount of mineral salts and is unsuitable for drinking, like sea water.
The distribution of fresh and salt water is not equal. About 96% of the planet's water is in the oceans and is salty. Only 4% of all water on Earth is fresh.
1) Name some beings that need water to live:
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2) How many percent of water is the human body?
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3) Name three uses for water:
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4) What is the percentage of water on the earth's surface?
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5) What are the states in which water can be found in nature?
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6) Where do we find water in a gaseous state?
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7) Where do we find water in solid state?
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8) Where do we find liquid water?
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9) What percentage of fresh water is present in nature?
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10) Give examples of how we can save water:
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