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

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The Moon does not shine by itself; it appears bright because it reflects sunlight. Sunlight that hits the Moon during the day reaches our eyes at night. The reason the Moon seems to change shape is that the positions of the Sun, the Moon, and the Earth change.

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Cherries are fruits that grow on trees. Flowers bloom in spring, and after the flowers fall, the fruit forms. The fruit contains seeds, from which new trees grow. By observing the growth of cherry trees and their fruit, we can understand how plants reproduce.

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Sunflowers grow by turning their flowers and buds toward the sun. This is called diurnal movement (heliotropism). By soaking up plenty of sunlight, they grow vigorously and large, and their flowers open more easily. You can see that plants, too, have devised ways to survive.

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Clouds are formed by tiny droplets of water or ice particles coming together. They look like they’re floating in the sky, but in reality they are lightly suspended in the air. By observing the shapes and movements of clouds, we can sometimes predict the weather, making them a useful subject for studying natural phenomena in the sky.

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In winter, because the Earth's axis is tilted, the duration of sunlight is shorter, making the days shorter and the nights longer. Conversely, in summer, the days are longer. The fact that the lengths of day and night change with the seasons is evidence that the Earth is rotating.

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Bees use their stingers to protect themselves and their nests. They don’t use them when they aren’t being attacked, and it’s safe when they are collecting nectar from flowers. Care must be taken when they use their stingers. Although small, bees are very important and also help pollinate flowers. They are creatures that know when to use their stingers in order to survive in nature.

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In winter, bears go into what’s called hibernation and sleep for a long time. They do this to get through the cold season when food is scarce. Even during hibernation, their hearts keep beating a little and their body temperature is maintained. When spring comes and the temperature rises, they go outside again and become active. By hibernating, bears protect their bodies and skillfully survive the cold season.