Unit Overview

Students explore Earth's position in cosmos investigating how movements create observable patterns. Through tracking shadow positions changing throughout days or examining why different constellations appear different seasons, conducting investigations graphing daylight length changes and observing constellation movements with planispheres, and engineering solar tracking devices or seasonal planning tools, students discover daily phenomena result from Earth's rotation, revolution, and tilt in space.

• Next Generation Science Standards

  5-ESS1-1

  Support an argument that the apparent brightness of the sun and stars is due to their relative distances from the Earth. [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).]

  5-ESS1-2

  Represent data in graphical displays to reveal patterns of daily changes in length and direction of shadows, day and night, and the seasonal appearance of some stars in the night sky. [Clarification Statement: Examples of patterns could include the position and motion of Earth with respect to the sun and selected stars that are visible only in particular months.] [Assessment Boundary: Assessment does not include causes of seasons.]

• Inquiry Scale
  • Each lesson in the unit has an Inquiry Scale that provides directions on how to implement the lesson at the level that works best for you and your students.
  • “Level 1” is the most teacher-driven, and recommended for students in 4th-5th grades. “Level 4” is the most student-driven, and recommended for students in 7th-8th grades.
  • For differentiation within the same grade or class, use different inquiry levels for different groups of students who may require additional support or an extra challenge.
• Common Misconceptions
  • Different regions of Earth are warmer because they are closer to the Sun. Emphasize (through the Solve and Make) that it is not about distance to the Sun, but rather the angle that the Sun’s rays hit the Earth. Use the example of the equators vs. the poles.
  • Earth is flat because the ground we walk on is flat. Emphasize (through The Solve) that Earth is round, and this round shape affects angles of sunlight.
  • Earth doesn’t move or orbit the Sun because we can’t feel it. Emphasize that Earth moves very fast, but we can’t feel it because the speed is constant. Have the students think of how they feel in a car that’s moving at a constant speed vs a car that’s accelerating.
  • Every area of the world experiences seasons at the same time. Emphasize (through The Solve) that Earth’s tilt causes the Northern and Southern Hemispheres to receive different Sun angles at different times of the year.
  • The Sun is not a star. Emphasize (through The Engineer slideshow) that our Sun is the star closest to Earth.
  • Stars are all the same distance from Earth and form one flat sheet of stars across the night sky. Emphasize (through The Engineer) that the sky is filled with stars at various distances from Earth and that is why some are brighter than others.
  • The brighter a star is, the bigger it is. Emphasize (through The Engineer) that a star’s brightness is due to its size and distance from Earth.
• Vocabulary
  • • Earth
    • Equator
    • Poles
    • Season
    • Sun
    • Orbit
• Leveled Reading

  * To give our users the most comprehensive science resource, Mosa Mack is piloting a partnership with RocketLit, a provider of leveled science articles.

  • Planets Don't Make Circles

    This article investigates the idea that planets have elliptical and not circular orbits. It also addresses the difference between orbit and rotation when it comes to planetary movement.

  
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  • Your Space Neighborhood

    This article serves as an introduction to the Solar System and the basic structures that orbit around the sun: gas planets, rocky planets and the asteroid belt.

  
  RocketLit serves tailored Science reading to every student in your classroom at their independent reading level.
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  • Light Hits All of Us Differently

    In this article, students will read about all how seasons are affected by earth's axis and rotation. They'll also read about why it's hotter at the equator and colder toward the poles.

  
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  • Get to Know Your Gassy Space Neighbors

    In this article, students will read about the order of the 4 gas giants in our solar system, what each one looks like and a brief description of the conditions.

  
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  • The Trip Around the Sun

    In this article, students learn about the different elements of Earth's orbit around the sun. We introduce students to the orbit around the star, the period of revolution, and the tilt of our axis.

  
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  • Why are Planets Round?

    This article explains how gravity works to pull planets and stars together into spheres.

  
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