Science Sep 11 PG 142 143 OPENING Inner

Science Sep. 11 PG 142 -143

OPENING Inner planets Mercury Venus Mars Earth

MINI LESSON What characteristics do you think that the outer planets share?

WORK SESSION: The Outside Track Individually read pg 142 As you read these pages, underline the sentence that contains the main idea Remember: the main idea may be stated in the first sentence, or it may be stated elsewhere To find the main idea, active readers ask, What is this paragraph mostly about?

Outer Planets • • • So far away that even fastest space probes take years to reach them Do not have solid surfaces Gas Giants Many moons Surrounded by rings made up of dust, ice or rock

Jupiter Has at least 63 moons Atmosphere is constantly in motion Great Red Spot is a swirling storm that has raged for more than 300 years

Saturn Has thousands of rings Rings may be leftover pieces of comets, asteroids or moons that broke up long ago Atmosphere has winds that can blow at speeds of 1, 800 km/hr

Uranus Tilts so far on its axis that it looks as if it is on its side Methane gas in atmosphere gives planet its blue color VERY COLD!! About -215 C (-355 F)

Neptune At 30 AU it is farthest planet from Sun Atmosphere looks blue Sometimes, high white clouds of methane ice crystals blow across it Physical changes inside Neptune are thought to slightly increase temp.

TICKET OUT THE DOOR Write one statement on how the inner and outer planets are different.