[For Lower Elementary Students] Play Right Away! Learn with Fun True-or-False Quizzes

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A cat’s eyes are adapted to see well even in the dark. Although their vision is blurrier than during the day, they can still detect movement on dark nights. This is an important ability for hunting. Their eyes are more sensitive to light than human eyes, allowing them to walk safely and look for food even in low-light places.

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Carrots, lettuce, and tomatoes are also plants. We eat their roots, leaves, and fruits. By eating parts of plants, we can learn that we get nutrients from them. Understanding the relationship between food and plants deepens food education and interest in nature.

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Adding salt to water does not cause the water’s temperature to drop immediately. While adding salt can change certain properties—such as the temperature at which ice melts—it does not directly lower the water’s temperature. By learning about the properties of substances and how they change, you can understand the wonders of everyday science.

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When closing the cap, you need to twist the screw, and when opening it, you turn it in the opposite direction. How easy it is to open changes depending on the direction of force and the number of turns. By understanding how familiar objects work, you can learn ways to use tools properly and the directions in which forces act.

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Ice is lighter than water and floats on it. When water freezes, the arrangement of its molecules changes and expands slightly, which lowers its density. Thanks to this property, even if the surface of lakes and rivers freezes, the water below does not, allowing living things to survive the winter. It is a very important phenomenon in nature.

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Because the Earth rotates, the sun rises in the east and sets in the west every day. When we see the sunrise, we know a new day has begun. The sun’s light and heat are very important for living things on Earth, providing the energy that helps plants grow and enables us to be active and healthy.

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Penguins are birds, but they cannot fly. Instead, they are good at swimming in the water. Their wings have evolved not for flying, but for swimming. They live by walking on ice and catching fish. It’s an interesting aspect of nature that some birds can fly while others cannot.