Illustrative Mathematics
Illustrative Mathematics: G Mg Tilt of Earth's Axis and the Four Seasons
This task gives students a chance to explore the effects of the Earth's tilt and rotation using a simple geometric model of Earth-Sun interaction that shows why the seasons occur. Aligns with G-MG.A.1.
Science Buddies
Science Buddies: A Matter of Degrees: Tilt of Earth's Axis Affects the Seasons
In this science fair project, use a globe and a heat lamp to investigate how the angle of the Sun affects global warming. This project includes the objective, background questions, a list of all the materials you'll need, and the...
Scholastic
Scholastic: Study Jams! Science: Weather & Climate: Seasons
A slideshow and a short multiple-choice quiz on the topic of seasons and how they are caused by the Earth's rotation and orbit.
Khan Academy
Khan Academy: Cosmology and Astronomy: Season Simulator
This season simulator takes Earth through an entire year cycle allowing the viewer to observe the tilt of the Earth and the intensity of the sunlight.
BioEd Online
Bio Ed Online: Reason for the Seasons
In this set of activities, the path the Sun takes in relation to the Earth is tracked by middle schoolers on two days, with three months in between them. They will develop an understanding of what causes the seasons as they examine the...
PBS
Pbs Learning Media: Earth in Motion: Seasons
This interactive activity from the Adler Planetarium explains the "reasons for the seasons." Featured is a game in which Earth must be properly placed in its orbit in order to send Max, the host, to different parts of the world during...
Science Buddies
Science Buddies: Project Ideas: The Reasons for the Seasons
In this astronomy science fair project, investigate how the earth's axial tilt creates seasons. The Science Buddies project ideas are set up consistently beginning with an abstract, objective, and introduction, followed by a section on...
TED Talks
Ted: Ted Ed: Reasons for the Seasons
Why do some regions experience full-time heat while others are reckoning with frigid temperatures and snow? And why are the seasons reversed in the two hemispheres? Rebecca Kaplan explains how the shape of the Earth's orbit around the...
CK-12 Foundation
Ck 12: Plix: Seasons
[Free Registration/Login Required] This site contains an animation showing how the seasons are produced by the tilt of Earth's rotating axis. Site also includes a short quiz over the topic of seasons.
Exploratorium
Exploratorium:seasons/shadows: Investigate How Shadows Shift Throughout the Year
Ancient Chacoans used shadows to tell daily time and seasons. Build a model that demonstrates the changes in Earth's tilt that affect the length of shadows relative to the sun that determines the seasons. The lesson plan uses everyday...
Other
Astronomical Society of the Pacific: To Every Season There Is a Reason
Provides an in-depth explanation of seasons including why temperate and tropical climates have different seasonal cycles.
Other
Earth Science: Earth's Surface and Heat [Pdf]
This textbook chapter looks at the role of temperature in sustaining life on Earth and on weather and climate. It discusses the Earth's movements and the seasons, the circulation of the oceans, wind and weather, and the water cycle....
PBS
Pbs Learning Media: Seasons on Earth and Mars
Compare the seasons on Earth and Mars with NASA imagery. Use this resource to visualize how the axial tilt of a planet influences its seasons and to compare data about seasonal changes on Earth and Mars. Support materials include:...
PBS
Pbs Learning Media: Why Do We Have Seasons?
Explore what causes seasons on Earth in this interactive adapted from NASA materials that features four cities at different latitudes. Use this resource to view how Earth's axial tilt causes seasons from different perspectives and to...
Scholastic
Scholastic: Study Jams! Science: Our Solar System: A Day on Earth
A video and a short multiple-choice quiz on how the Earth's tilt on its axis, its rotation, and its orbit around the Sun give us a 24-hour day, a 365-day year, and our seasons.
Science U
Science U: Reasons for the Seasons
This webpage uses diagrams and video to explain the causes of the seasons.
NASA
National Aeronautics and Space Administration: Scijinks: Seasons
An explanation about the rotation of the Earth and why the Earth has seasons.
Wikimedia
Wikipedia: Season
Encyclopedia entry for the seasons. Click on each specific season for more information.
NASA
Nasa: Space Place: What Causes the Seasons?
A fun resource that teaches students the reasons why Earth's four seasons happen they way they do.
Curated OER
Weather Dude: The Seasons
Especially for kids, the Weather Dude provides a simple explanation of the seasons. Includes a music clip titled "Circle of Our Four Seasons," and suggested lesson plans and school assignments.
University of Illinois
University of Illinois Extension: Tree House Weather Kids: What Causes the Season?
Explore what causes the change of seasons on the Earth.
Texas Instruments
Texas Instruments: What Causes the Seasons?
In this activity, students' will explore how the tilt of the earth's axis results in different amounts of solar radiation at different times of the year, causing seasons. They will simulate the earth's warming using a light bulb that...
CK-12 Foundation
Ck 12: Plix: Seasons: Earth's Orbit
[Free Registration/Login Required] An interactive animation demonstrating the Earth's tilted axis and how that causes the seasons. Also included on the site is a short quiz on the topic.
PBS
Pbs: Why Do We Have Seasons?
A student-directed tutorial showing all aspects of seasons, including Earth's tilt position in relation to the sun, photos of typical weather during that season, and some informational text to support the visuals.
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