Lunar Eclipse Basics
This happens when Earth blocks sunlight from reaching the Moon.
What is a lunar eclipse?
Scientists use these to predict eclipses.
What are patterns?
During both a full moon and lunar eclipse, this object is between the sun and Moon.
What is Earth?
This digital tool helped students investigate lunar eclipses.
What is the simulation (Sim)?
If the Moon moves into Earth’s shadow, what event is happening?
What is a lunar eclipse?
Earth is located between these two objects during a lunar eclipse.
What are the sun and the Moon?
This ancient device was used to predict eclipses.
What is the Antikythera mechanism?
Unlike a lunar eclipse, during a full moon the Moon is usually positioned here.
What is above or below Earth’s shadow?
Changing this in the simulation helped students better observe eclipses.
What is the perspective/view?
If the Moon is above Earth’s shadow, what moon phase might you see instead?
What is a full moon?
A lunar eclipse only happens when the sun, Earth, and Moon are arranged this way.
What is a straight line?
Why are repeating patterns important in science?
They help scientists make predictions about future events.
This is the major difference between a full moon and a lunar eclipse.
During a lunar eclipse, Earth blocks sunlight from reaching the Moon.
Scientists use these to represent systems that are difficult to observe directly.
What are models?
Why is the Moon not dark during every full moon?
Earth does not always block sunlight because the Moon’s orbit is tilted.
This moon phase must occur before a lunar eclipse can happen.
What is a full moon?
Scientists observed repeating moon and eclipse patterns over long periods of this.
What is time?
What evidence from the simulation helped show the difference between a full moon and a lunar eclipse?
The Moon was not perfectly aligned in a straight line during a full moon.
Why was viewing the system from the side important in the simulation?
It helped students see whether the Moon was directly aligned or above/below Earth.
How could scientists predict a future eclipse?
By studying patterns in the Moon’s orbit and alignments
Explain why every full moon does not become a lunar eclipse.
The Moon’s orbit is tilted, so the Moon is often above or below Earth’s shadow.
Explain how ancient scientists were able to predict eclipses without modern technology.
They observed repeating patterns in the sky and recorded data over time.
Compare the positions of the sun, Earth, and Moon during a full moon and a lunar eclipse.
In both, Earth is between the sun and Moon, but only the lunar eclipse has all three in a straight line.
How did using both the reading and simulation strengthen students’ explanations?
Students gathered evidence from multiple sources to support their understanding.
A student claims, “Every time Earth is between the sun and Moon, there must be a lunar eclipse.” Explain why this statement is incorrect.
Earth, the Moon, and sun must be in a perfect straight line. The Moon is often above or below Earth’s shadow because its orbit is tilted.