--- title: 7.P3U1.3 description: 7.P3U1.3 Plan and carry out an investigation that can support an evidence-based explanation of how objects on Earth are affected by gravitational force. image: https://www.knowatom.com/hubfs/Right%20Image.png --- [![Teacher Login](https://no-cache.hubspot.com/cta/default/347944/f56bee57-133e-4975-8055-799f1f23588b.png)](https://cta-redirect.hubspot.com/cta/redirect/347944/f56bee57-133e-4975-8055-799f1f23588b) [Teacher Login](https://app.knowatom.com/signin) [![KnowAtom Logo](https://www.knowatom.com/hubfs/KnowAtom%20Logo.svg "KnowAtom Logo")](https://www.knowatom.com/) # 7.P3U1.3 Plan and carry out an investigation that can support an evidence-based explanation of how objects on Earth are affected by gravitational force. [![Download a Sample Unit](https://no-cache.hubspot.com/cta/default/347944/20eee377-e175-48fe-a039-ae723137a2a6.png)](https://cta-redirect.hubspot.com/cta/redirect/347944/20eee377-e175-48fe-a039-ae723137a2a6) Science & Engineering Practices - [Developing and using models](https://www.knowatom.com/developing-and-using-models) - [Analyzing and interpreting data](https://www.knowatom.com/analyzing-and-interpreting-data) - [Constructing explanations and designing solutions](https://www.knowatom.com/constructing-explanations-and-designing-solutions) - [Engaging in argument from evidence](https://www.knowatom.com/engaging-in-argument-from-evidence) - [Obtaining evaluating and communicating information](https://www.knowatom.com/obtaining-evaluating-and-communicating-information) Disciplinary Core Ideas - [Earth Materials and Systems](https://www.knowatom.com/earth-materials-and-systems) - [Structure and Properties of Matter](https://www.knowatom.com/structure-and-properties-of-matter) - [Chemical Reactions](https://www.knowatom.com/chemical-reactions) - [Conservation of Energy and Energy Transfer](https://www.knowatom.com/conservation-of-energy-and-energy-transfer) [![New call-to-action](https://no-cache.hubspot.com/cta/default/347944/b5a1446e-d782-4a5f-a019-0b3b98c8304f.png)](https://cta-redirect.hubspot.com/cta/redirect/347944/b5a1446e-d782-4a5f-a019-0b3b98c8304f) ## 7.P3U1.3 Grade Ranges All K-2 3-5 6-8 [![](https://www.knowatom.com/hubfs/image1-Oct-09-2023-06-17-28-2489-AM.png) ](https://www.knowatom.com/science-phenomena-videos/8th-grade-science/mass-and-motion) ## [Mass and Motion In this unit, students encounter phenomena related to matter and energy as they learn about how engineers design materials with specific properties to address a wide range of societal needs.This page provides an overview of one lesson. ](https://www.knowatom.com/science-phenomena-videos/8th-grade-science/mass-and-motion) [ VIEW LESSON ](https://www.knowatom.com/science-phenomena-videos/8th-grade-science/mass-and-motion) [![](https://www.knowatom.com/hubfs/image4-Oct-09-2023-06-38-57-1697-AM.png) ](https://www.knowatom.com/science-phenomena-videos/8th-grade-science/earths-place-in-the-solar-system) ## [Earth's Place in the Solar System In this unit, students explore the vastness and mysteriousness of the universe, exploring how the Earth-sun-moon system fits into solar system phenomena and the Milky Way Galaxy. In this lesson they evaluate phenomena related to gravity’s role in forming the solar system and how mass and gravity determine weight on other planets. This page showcases key elements in this lesson. ](https://www.knowatom.com/science-phenomena-videos/8th-grade-science/earths-place-in-the-solar-system) [ VIEW LESSON ](https://www.knowatom.com/science-phenomena-videos/8th-grade-science/earths-place-in-the-solar-system) [![](https://www.knowatom.com/hubfs/image3-Oct-09-2023-06-38-57-5152-AM.png) ](https://www.knowatom.com/science-phenomena-videos/8th-grade-science/engineering-meterooid-shields) ## [Engineering Meteoroid Shields In this unit, students apply what they have previously learned about forces, motion, and matter to the solar system, focusing on the phenomena of gravity’s role in the universe. In this lesson, students engineer a solution to collisions between moving objects in space. This page is a high-level extract of this lesson. ](https://www.knowatom.com/science-phenomena-videos/8th-grade-science/engineering-meterooid-shields) [ VIEW LESSON ](https://www.knowatom.com/science-phenomena-videos/8th-grade-science/engineering-meterooid-shields) [![](https://www.knowatom.com/hubfs/image1-Oct-09-2023-07-25-38-5271-AM.png) ](https://www.knowatom.com/science-phenomena-videos/8th-grade-science/magnetism-and-energy) ## [Magnetism and Energy In this unit, students connect their explorations of Earth and life sciences with physical sciences with an exploration into the science phenomena of magnetism and electricity. They investigate magnetic fields and electromagnets in this lesson. This page showcases key parts of this lesson.](https://www.knowatom.com/science-phenomena-videos/8th-grade-science/magnetism-and-energy) [ VIEW LESSON ](https://www.knowatom.com/science-phenomena-videos/8th-grade-science/magnetism-and-energy) [![](https://www.knowatom.com/hubfs/Grade/Screenshot%20(64).png) ](https://www.knowatom.com/science-phenomena-videos/7th-grade-science/forces-and-motion) ## [Forces and Motion In this unit, students explore phenomena related to the relationship between forces and motion and how energy is converted from one form to another in an energy system. This page is a high-level extract of the first lesson from this unit which has students investigating the connection between an object’s mass and the force needed to change its motion.](https://www.knowatom.com/science-phenomena-videos/7th-grade-science/forces-and-motion) [ VIEW LESSON ](https://www.knowatom.com/science-phenomena-videos/7th-grade-science/forces-and-motion) [![](https://www.knowatom.com/hubfs/Grade/Screenshot%20(64).png) ](https://www.knowatom.com/science-phenomena-videos/7th-grade-science/engineering-vehicles) ## [Engineering Vehicles In this unit, students explore the relationship between the phenomena of forces and motion and how energy is converted from one form to another in an energy system. In this lesson, students design a vehicle that can travel over a surface on a cushion of air. This page highlights key parts of this lesson.](https://www.knowatom.com/science-phenomena-videos/7th-grade-science/engineering-vehicles) [ VIEW LESSON ](https://www.knowatom.com/science-phenomena-videos/7th-grade-science/engineering-vehicles) [![](https://www.knowatom.com/hubfs/image1-Oct-09-2023-07-32-07-9953-AM.png) ](https://www.knowatom.com/science-phenomena-videos/8th-grade-science/mechanical-waves-and-energy) ## [Mechanical Waves and Energy In this unit, students explore the science phenomena of waves and information transfer. For the first lesson of this unit, students identify the properties of different kinds of waves. This page is a high-level extract of this lesson. ](https://www.knowatom.com/science-phenomena-videos/8th-grade-science/mechanical-waves-and-energy) [ VIEW LESSON ](https://www.knowatom.com/science-phenomena-videos/8th-grade-science/mechanical-waves-and-energy) [![](https://www.knowatom.com/hubfs/Grade/Screenshot%20(22).png) ](https://www.knowatom.com/science-phenomena-videos/8th-grade-science/engineering-seismographs) ## [Engineering Seismograph In this unit, students focus on the properties of different kinds of waves and the relationship between waves and energy. In this lesson, students design a simple seismograph using what they know about the properties of seismic waves produced by earthquakes. This page is a high-level extract of this lesson.](https://www.knowatom.com/science-phenomena-videos/8th-grade-science/engineering-seismographs) [ VIEW LESSON ](https://www.knowatom.com/science-phenomena-videos/8th-grade-science/engineering-seismographs) Standards citation: NGSS Lead States. 2013. *Next Generation Science Standards: For States, By State*s. Washington, DC: The National Academies Press. 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