Chapter 8, Astronomy Lesson 1, The Earth
Chapter 8, Astronomy Lesson 1, The Earth-Sun System Objectives __________________________________________________________ ___________________________________________________________________ ___________________________________________________________________ ___________________________________________________________________ ___________________________________________________________________ ___________________________________________________________________ Main Idea __________________________________________________________ ___________________________________________________________________ ___________________________________________________________________ Vocabulary astronomy __________________________________________________________ _______________________________________________________________ universe ____________________________________________________________ _______________________________________________________________ telescope ___________________________________________________________ _______________________________________________________________ rotation ____________________________________________________________ _______________________________________________________________ standard time zone ___________________________________________________ _______________________________________________________________ International Date Line ________________________________________________ _______________________________________________________________ revolution __________________________________________________________ _______________________________________________________________ What is astronomy? What are some of the objects that are visible in the night and day skies? ________ ___________________________________________________________________ ___________________________________________________________________ ___________________________________________________________________ Which objects are made by humans? _____________________________________ ___________________________________________________________________ ___________________________________________________________________ ___________________________________________________________________ How are Earth and the Moon different from the stars? _______________________ ___________________________________________________________________ ___________________________________________________________________ ___________________________________________________________________ Why can we not see some objects in the sky? ______________________________ ___________________________________________________________________ ___________________________________________________________________ ___________________________________________________________________ Read a Diagram, Two Types of Telescopes What do these two telescopes do to the image of Mars? _____________________ ___________________________________________________________________ ___________________________________________________________________ ___________________________________________________________________ Quick Check Draw Conclusion What kind of telescope would you expect to find in most observatories? ________ ___________________________________________________________________ ___________________________________________________________________ ___________________________________________________________________ Critical Thinking Why might an astronomer study objects in space with an infrared telescope? ____ ___________________________________________________________________ ___________________________________________________________________ ___________________________________________________________________ How can we prove that Earth rotates? Think about standing on Earth and looking at the Sun in the sky. What would you think about the relationship between Earth and the Sun, based only on observation? ________________________________________________________ ___________________________________________________________________ ___________________________________________________________________ ___________________________________________________________________ How does the Sun actually move? Why does the sun appear to move across the sky? _______________________________________________________________ ___________________________________________________________________ ___________________________________________________________________ ___________________________________________________________________ It’s two o’clock in the afternoon in Springfield. In Shelbyville, the next town over, it is three o’clock in the afternoon. How is that possible? ____________________ ___________________________________________________________________ ___________________________________________________________________ ___________________________________________________________________ In which direction would you have to travel to go from Springfield to Shelbyville? _ ___________________________________________________________________ ___________________________________________________________________ ___________________________________________________________________ Standard Time Zones Read a Map, U.S, Standard Time Zones If it is noon in Denver, what time is it in Miami? ____________________________ Quick Checks Draw Conclusions If it is 8:00 P.M. Mountain Standard Time, what time is it in Honolulu, Hawaii? ___ ___________________________________________________________________ Critical Thinking What would happen if you traveled west across the International Date Line? _____ ___________________________________________________________________ ___________________________________________________________________ ___________________________________________________________________ What makes a year? What natural events occur in yearly cycles? ________________________________ ___________________________________________________________________ ___________________________________________________________________ ___________________________________________________________________ What do you think causes these cycles? ___________________________________ ___________________________________________________________________ ___________________________________________________________________ ___________________________________________________________________ Changes in Sunlight Why is the Northern Hemisphere warmer in June than it is in December? ________ ___________________________________________________________________ ___________________________________________________________________ ___________________________________________________________________ During June in the Northern Hemisphere, the days are long, and the nights are short. As you move north, the days become even longer. Is it possible to find a place where the Sun does not set at all? How do you know? __________________ ___________________________________________________________________ ___________________________________________________________________ ___________________________________________________________________ Quick Check Draw Conclusions How do seasons in the Southern Hemisphere and Northern Hemisphere compare? ___________________________________________________________________ ___________________________________________________________________ ___________________________________________________________________ Critical Thinking You are an explorer who has just arrived on a planet in our solar system. You notice the Sun rising in the west and setting in the east. Based on these observations, what might you conclude about the planet’s rotation? ____________ ___________________________________________________________________ ___________________________________________________________________ ___________________________________________________________________ How can we explore space? What would a person need to stay alive in space? ___________________________ ___________________________________________________________________ ___________________________________________________________________ ___________________________________________________________________ How can people explore space without actually going there? __________________ ___________________________________________________________________ ___________________________________________________________________ ___________________________________________________________________ A space shuttle orbits at about 29,000 kilometers (18,000 miles) per hour, which means it completes one revolution around Earth in 90 minutes. How many sunrises and sunsets would an astronaut in the shuttle see in 24 hours? ___________________________________________________________________ Quick Check Draw Conclusions What type of data do you think an artificial satellite in orbit above Earth might gather? _____________________________________________________________ ___________________________________________________________________ ___________________________________________________________________ ___________________________________________________________________ Critical Thinking What is the difference between planetary images taken from Earth and those taken from space? _________________________________________________________ ___________________________________________________________________ ___________________________________________________________________ ___________________________________________________________________
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