Shadow size :
The outer, lighter part of the shadow where only a partial eclipse is visible.
Answer: Only a small area on Earth that is inside the umbra. 3d eclipse gizmo answer key activity a
| Question Theme | What to click/adjust | What you should notice | |----------------|----------------------|------------------------| | | Move observer around Earth’s surface while the Moon is directly between Sun and Earth. | The spot directly under the Moon’s shadow (inside the umbra) – a narrow path. | | “Why does the eclipse path shift each month?” | Change the Moon’s orbital inclination or longitude of ascending node . | The umbra no longer aligns with the same Earth latitude; the path drifts north‑south. | | “What happens to the length of the Moon’s umbra when the Moon is at apogee?” | Drag the Moon to its farthest orbital point. | Umbra shortens , sometimes disappearing entirely → only a partial eclipse possible. | | “Describe what an astronaut on the Moon sees during a lunar eclipse.” | Move observer to Moon surface when Earth’s shadow falls on it. | The astronaut sees a darkened Earth (Earth’s umbra) covering the Sun – a total solar eclipse on the Moon . | | “How does the size of Earth’s penumbra compare to its umbra at the Moon’s distance?” | Toggle the penumbra/umbra view, zoom out to Moon’s orbit. | Penumbra is much larger , covering a wide area; umbra is a narrow cone. |
, the umbra often misses Earth entirely, passing above or below it. Shadow size : The outer, lighter part of
Duration :
How is a solar eclipse formed?
: The shadow of the Moon extends all the way to Earth's surface.
Answer: A larger area on Earth that is inside the penumbra. | The spot directly under the Moon’s shadow
Answer: The Moon passes between the Earth and the Sun, blocking the Sun's light.