Lunar phases and eclipses are the focus of this Grade 6 Science worksheet on Earth's place in the universe. Students use Earth–Moon–Sun geometry to explain why different amounts of the Moon’s surface appear illuminated and how changing positions and lines of sight produce the lunar phases and eclipse conditions.

Build the Geometry Behind the Patterns

This resource moves beyond naming Moon phases by asking students to connect observations to the relative positions of the Sun, Earth, and Moon. Students order the primary lunar phases, describe changes in the line of sight during the cycle, and identify the alignment and shadowing conditions that distinguish solar and lunar eclipses.

Students also work with observational records to describe periodic patterns in lunar phases and use those patterns to predict Earth–Moon–Sun configurations. A labeled diagram provides a visual application of the geometry and shadow relationships.

What Students Work With

• Multiple-choice questions addressing lunar phases, relative positions, lines of sight, alignment, and shadowing
• True/false items that check scientific reasoning about Earth–Moon–Sun relationships
• Short-answer responses requiring explanations of lunar phase and eclipse conditions
• A dialogue activity, matching task, and cloze passage for applying key ideas in different contexts
• A labeled diagram connecting geometry, sunlight, and shadows
• A reading passage followed by an essay task that supports explanation and application

Teacher Support Included

• Student worksheet covering the lesson concepts and varied response formats
• Separate Teacher Guide PDF with learning objectives, teaching tips, discussion questions, and common mistakes

Flexible Classroom Use

Use the worksheet as guided practice after instruction on lunar phases, an independent Earth–Moon–Sun geometry activity, a review before assessment, or a written application of observational evidence. The Teacher Guide provides discussion prompts and teaching support for addressing misconceptions while students explain their reasoning.

With its combination of spatial reasoning, observation-based prediction, visual interpretation, and written explanation, this lunar phases worksheet gives Grade 6 students multiple ways to connect what they observe in the Moon's cycle with the geometry that causes those patterns.