Lesson ObjectivesBy the end of this lesson, students should be able to:•Know that our sun is one of billions of stars in theuniverse•Describe ways the sun is important for life on Earth•Know the two gases that make up the majority of the sun•Explain that radiant energy from the Sun can heatobjects
Lesson Essential Questions• What are the properties of our Sun?• Why is the Sun important to life on Earth?• What happens to objects that are exposed to the sun?
Key Vocabulary• Astronomy• Energy• Filament• Heat The universe is home to many• Light galaxies. Our solar system is part of the Milky Way galaxy.• Radiant Energy• Radiation • Telescope• Solar System • Ultraviolet• Star • Universe
The Sunny Side of School Ask yourself: As you take a •Do some surfaces feel discovery trip warmer than others? throughout your •Can you tell how long school, try to find the sun has been the sunniest spots shining on a surface? and surfaces. •What effects does the sun have on objects on Earth.
The SunLink to The Sun
How does life on Why does the sunEarth depend on appear to move?the sun?
Get Your Hands Dirty! How exactly do sunscreens work? Why are some stronger than others? Complete the Hands-On Activity: Sun Protection to find out!
Explore: Guided Inquiry
The Sun: Too Hot to Handle!Link to A Huge Furnace
While you view the following video, thinkabout these questions:• How does the location of Earth allow it to support life?• When is the sun visible?• Why do all other stars appear as only small points of light?
Our Solar SystemLink to Our Solar System
Review: The Greenhouse Effect Take a few minutes and think about the Greenhouse Effect.•What is the Greenhouse Effect?•How does the Greenhouse Effect impact peopletoday?•Can you name some examples and applications ofthe Greenhouse Effect?
The Sun and Us Work with a Include: partner to create a •Its size •Its composition labeled diagram of •Its energy output the sun.
Exploring the StarsLink to the Exploration: Our Star the Sun
Safely Viewing the SunAfter reading the passage A Sun-sational Journey, followthese easy steps to make your own pinhole projector andsafely observe the sun.1)Punch a small hole in a piece of thin cardboard.2)Without looking directly at the sun, point the board at thesun.3)Hold a thin piece of white paper in front of hole.4)Voila! An image of the sun is projected onto the piece ofpaper.5)Using your pinhole projector, observe the sun over the nextseveral days and compile your results into a poster to sharewith the class.
Check For UnderstandingOur Star the Sun Why is the Sun important to life on Earth?• The Sun is our closest star• The Sun provides us with heat and light• Without heat and light from the Sun, plants and animals would not be able to survive on Earth
Homework Ideas• Have students conduct research to extend their knowledge of the sun. They should expand their knowledge by studying things that are not included in the lesson sub- concepts. Ideas include the sun’s core, the layers of the sun’s atmosphere, the future of the sun, solar flares, solar wind, and sunspots. Have students present their findings in a brief oral report to their classmates.• Have students write a science fiction story based on the sun. Allow them to choose their own story idea, or assign ideas to students. Possible ideas include travel to the sun or a world without the sun. Challenge students to include facts about the sun in their stories, and then havestudents share their stories with their classmates.