What is Science?
Science is the study of the world around us. It involves observing, listening, and recording what we discover. Science is driven by curiosity and helps us understand how things behave and why. Anyone can come up with an idea about nature, but scientists go further, as they test these ideas, called hypotheses, to see if they are correct. When a hypothesis works well and predicts behavior, it becomes a theory. For example, Copernicus observed the stars and suggested the Sun was at the center of the solar system. Einstein, on the other hand, used thought experiments before testing his ideas. Science is like solving exciting mysteries and finding new answers! Fonte: NASA, 2021.
Ancient inventions we still use today
Mints: today, we eat mints to freshen our breath. The Ancient Egyptians did something similar. They boiled herbs and cinnamon, mixed them with honey, and made pellets to chew. Alarm clocks: modern alarm clocks have their roots in ancient devices. The Greek philosopher Plato used a water clock that made noise, like a water organ, to signal the start of his lectures. By the 15th century, mechanical alarm clocks were invented with pins to set the time. Door locks: the Ancient Egyptians created the first locks around 4,000 B.C. These wooden locks used large bolts and pins with unique patterns, much like modern locks. Concrete: the Romans used concrete 2,100 years ago. They mixed lime, volcanic ash, and rocks to make a strong material for buildings, even underwater.
Physical Health
Physical health means having your body functions working well, not just being free from disease. It involves regular exercise, eating a balanced diet, and getting enough rest. People also seek medical treatment when needed. To stay healthy, it's important to live a lifestyle that reduces the risk of illness. Keeping fit improves your heart, lungs, muscles, and flexibility. Other ways to protect your health include avoiding tobacco, alcohol, and drugs; using contraception; practicing good hygiene; and getting recommended vaccines when traveling.
Fonte: FELMAN, 2023.
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