By Peggy Parks
Grade 5-7-This drab yet systematic survey deals scholars an summary of our learn of the crimson Planet, from historical observations of its doubtless abnormal direction during the sky to NASA's April 2004 choice to increase the missions of rovers Spirit and chance. regardless of infrequent and clumsy efforts to rev it up ("After screaming via area at 16 thousand miles according to hour:"), the prose is as dry because the Martian floor, and a number of other of the accompanying, faded-looking black-and-white images or diagrams upload neither details nor perception. nonetheless, made up our minds readers will locate lots of present details, plus a strongly made case for sending people to Mars, and, to shut, quite thorough and resource lists. whereas Seymour Simon's vacation spot: Mars (HarperCollins, 2000) or Stuart Murray and Edward S. Barnard's Mars (DK, 2004) have some distance more desirable browser allure, Parks's publication is an appropriate selection for deeper topic collections.
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Additional resources for Exploring Mars
A Rugged, Rocky Planet Although the terrain on Mars is more like Earth’s than any other planet’s, it is extremely rugged and desertlike. Much of the Martian surface is covered with thick, powdery soil that has the consistency of flour, and the ground is strewn with jagged rocks and boulders of all shapes and sizes. ”10 The red landscape Sagan referenced is one of Mars’s most distinctive features. Because of a high iron oxide (rust) content in the soil, its color ranges from brownish-yellow to deep, dark red.
When these ice crystals combine with dust particles suspended in the atmosphere, clouds form. Depending on where they form and the color of the soil in the area, clouds may be white, yellow, brown, or pinkish-red, and they resemble waves, plumes, streaks, or puffs of cotton. When clouds form in low areas such as valleys, canyons, and craters, they hover close to the ground in the form of fog or haze. Clouds typically appear in the Martian sky in the early morning and then disappear as the sun warms the planet during the day.
That is because approximately 70 percent of Earth is covered by oceans, and these vast bodies of water do not exist on Mars. A Rugged, Rocky Planet Although the terrain on Mars is more like Earth’s than any other planet’s, it is extremely rugged and desertlike. Much of the Martian surface is covered with thick, powdery soil that has the consistency of flour, and the ground is strewn with jagged rocks and boulders of all shapes and sizes. ”10 The red landscape Sagan referenced is one of Mars’s most distinctive features.