# Scale Model of Sun and Earth

Contributor
NASA Sun-Earth Day
Type Category
Instructional Materials
Types
Activity
Note
This resource, vetted by NSTA curators, is provided to teachers along with suggested modifications to make it more in line with the vision of the NGSS. While not considered to be “fully aligned,” the resources and expert recommendations provide teachers with concrete examples and expert guidance using the EQuIP rubric to adapted existing resources. Read more here.

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## Description

In this activity students explore the relative size of the sun and Earth as well as the distance between them at that relative size.  This activity serves as a first step to building understanding of distances in space.

Intended Audience

Educator
Educational Level
• Youth Public
• General Public
Language
English
Access Restrictions

Free access - The right to view and/or download material without financial, registration, or excessive advertising barriers.

#### Performance Expectations

5-ESS1-1 Support an argument that differences in the apparent brightness of the sun compared to other stars is due to their relative distances from the Earth.

Clarification Statement: none

Assessment Boundary: Assessment is limited to relative distances, not sizes, of stars. Assessment does not include other factors that affect apparent brightness (such as stellar masses, age, stage).

This resource was not designed to build towards this performance expectation, but can be used to build towards it using the suggestions provided below.

In this activity, students are exploring the relative size and distance of the sun and Earth. This is a beginning step to then understanding the distance between the Earth’s sun and other stars.

#### Science and Engineering Practices

This resource is explicitly designed to build towards this science and engineering practice.

Comments about Including the Science and Engineering Practice
Students use a model to describe the relative sizes of the sun and Earth. They then also use the model to describe the distance between the two bodies. The teacher could ask students to articulate what the model represents. Is there anything that is not represented accurately in the model?

This resource is explicitly designed to build towards this science and engineering practice.

Comments about Including the Science and Engineering Practice
Students describe and estimate the relative sizes of the sun and Earth. They then describe and estimate the distance between the two bodies at that size.

#### Disciplinary Core Ideas

This resource is explicitly designed to build towards this disciplinary core idea.

Comments about Including the Disciplinary Core Idea
Students explore the distance between Earth and the sun. This is foundational to building an understanding that the sun appears larger and brighter than other stars because it is closer to earth. In order to fully address the entire element, students would also need to explore the distances from Earth to other stars. A section of another published resource, Kinesthetic Astronomy, addresses the distance between Earth’s sun and Alpha Centauri, the next closest star.

#### Crosscutting Concepts

This resource is explicitly designed to build towards this crosscutting concept.