Gravity in space is the force that keeps planets, moons, comets, and satellites moving in orbit. In this Grade 7 science resource, students investigate how gravitational attraction influences orbital motion through five cosmic case studies based on real observations and discoveries.

Rather than treating gravity as an isolated concept, this learning station activity focuses on how gravitational systems influence the paths, periods, and speeds of objects in space. Students explore Earth's place in the universe while developing their ability to describe and compare orbital motion.

Explore Five Cosmic Case Studies

Each station card provides a context for investigating gravity and motion in space. Students work with the central concepts of orbital paths, orbital periods, and orbital speeds, considering how gravitational attraction influences the movement of different celestial objects and satellites.

The resource focuses on three connected science skills:

• Explaining how gravitational attraction keeps planets, moons, comets, and satellites in orbit.
• Comparing orbital paths, periods, and speeds across different gravitational systems.
• Using real observations and discoveries to explain the influence of gravity on motion in space.

What's Included

• Five station cards: Provide the case-study activities for exploring gravity and orbital motion.
• Station recording sheet: Gives students a place to record their station work.
• Station wrap-up: Provides a concluding activity for the station experience.
• Answer Key PDF with Teacher Guide: Includes learning objectives, teaching tips, discussion questions, and common mistakes to help guide instruction and review student responses.

Classroom Use

Use these Grade 7 astronomy learning stations as part of an Earth's Place in the Universe lesson. Students can work through the five case studies, record their work on the station recording sheet, and complete the wrap-up to consolidate their thinking about gravitational attraction and orbital motion.

The included teacher guide provides additional support for preparing instruction, facilitating classroom discussions, addressing common misconceptions, and reviewing the science concepts. It also makes the resource useful for structured lesson activities and guided classroom review.

Science Learning Focus

Gravity in Motion: Five Cosmic Case Studies gives students a focused opportunity to connect gravitational attraction with observable motion in space. By comparing how planets, moons, comets, and satellites move in different gravitational systems, students develop a more specific explanation of why objects follow orbital paths and how their orbital periods and speeds can differ.

For teachers covering Grade 7 Earth and Space Science, this resource brings together case-study exploration, student recording, and teacher guidance in one instructional package.