Sun, Earth, and Shadows: Daily Shadow Patterns Quiz

If the sun rises in the east, then the light source is on the eastern side of the object; if the light source is on the east, then the shadow must be cast in the opposite direction, which is the west.

If the angle (altitude) of the sun changes, then the angle at which light hits the object changes; if the angle of light becomes lower, then the shadow length increases.

If light travels in a straight line and is blocked by an object, then the area of darkness can only exist in the space where the light was prevented from reaching, which is the side away from the sun.

If the Earth rotates on its axis, then different parts of the planet face the sun at different times; if the viewpoint on Earth changes relative to the sun, then the sun appears to move from east to west.

If the Earth rotates on its axis, then the observer's position relative to the sun changes; if the relative position changes, then the angle and direction of light hitting objects change, causing shadows to move.

If the time is 4:00 PM, then the sun has moved lower toward the horizon; if the sun is lower than it was at noon, then the shadow it casts must be longer.

If the Earth rotates toward the east, then the sun first becomes visible over the eastern horizon; therefore, the sun appears to rise in that direction.

If the sun is at its highest point at noon, then the shadow is shortest; therefore, the statement that shadows are longest at mid-day is factually incorrect.

If a device uses a pointer to cast a shadow on a marked surface, then that shadow's position changes as the sun moves; if the position correlates to the sun's location, then it can be used to measure the passage of hours.

If a shadow always points directly away from the light source, and the shadow is in the North-West, then the light source must be in the opposite direction, which is South-East.

If the sun is directly overhead at its highest point, then the light rays hit the object from above with minimal angle, which results in the smallest possible shadow area on the ground.

If the sun is rising from the horizon toward its peak, then the angle of the sun is increasing; if the angle increases, then the shadow length must decrease until noon.

If the object's shape or the light's angle changes, then the area where light is blocked changes; if the landing surface is sloped, the projection of that area will also be distorted.

If light travels in straight lines and hits an opaque object, then the light is blocked; if the light is blocked, a dark area forms on the surface behind the object.

If light traveled in curved paths, it could move around an object; since it travels in straight lines, it is blocked by opaque objects, creating a shadow.

If the sun moves from East to West, then the shadow must always stay on the opposite side of the object; therefore, the shadow moves from West to East.

If an object is transparent, then light passes through it without being blocked; if light is not blocked, then no shadow can be formed.

If the sun is near the horizon at sunrise, then the light hits objects at a very low angle; if the light angle is low, then the shadow produced is very long.

If it is winter, then the sun's path is lower in the sky; if the sun is lower in the sky at noon, then it hits objects at a sharper angle, resulting in a longer shadow compared to summer.

If an object allows only partial light transmission, then it is translucent; if it is translucent, it will cast a faint or "fuzzy" shadow rather than a dark, crisp one.