Shadows happen because ____ from the Sun travels in ____ lines. When an object, like a person, tree, or building, ____ the sunlight, the light cannot ____ through it. The dark ____ that forms on the ground or wall is called a shadow. The shadow shows the ____ of the object that is blocking the light. Sometimes shadows may not ____. This can happen on very ____ days because clouds spread the sunlight in many directions. When light is spread out, shadows become very ____ or hard to see. Shadows may also disappear indoors if there is light coming from many ____ or windows at once. Shadows change during different times of the day. In the morning, the Sun is ____ in the sky. This makes shadows long and ____ out. At midday, the Sun is ____ above us, so shadows become short and ____. In the afternoon and evening, the Sun moves lower again, and shadows grow ____. Shadows also change direction. In the morning, shadows point ____. At noon, they are close to our feet. In the afternoon, shadows point ____. Watching shadows helps us learn about the Sun’s movement.

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