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Directed Reading for Content Mastery
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Overview The Earth-Moon-Sun System
Directions: Complete the outline using the terms in the list below. days sphere
Moon magnetic field
shadow revolution
gravity temperature
orbit years
I. Conditions that Support Life on Earth A. The _________________ on Earth is neither too hot nor too cold. B. Earth’s _________________ helps protect it from harmful radiation. II. Earth’s Rotation A. The rotation of Earth on its axis helps us keep track of _________________ . B. Its revolution around the Sun helps us measure _________________ . III. Earth’s Shape A. Because it casts a curved shadow during a lunar eclipse, we know Earth is shaped like a _________________ .
Copyright © Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.
B. Earth’s shape was formed by a force pulling on its molten core. That force is called _________________ . IV. Earth in Relation to the Sun A. Earth makes a complete trip, or _________________, around the Sun each year. B. Summer, winter, fall, and spring on Earth are caused by the tilt of Earth’s axis and Earth’s _________________ around the Sun. V. Earth in Relation to the Moon A. The _________________ travels, or revolves, around Earth. B. A lunar, or Moon, eclipse occurs when Earth’s _________________ falls on the Moon.
The Earth-Moon-Sun System
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Directed Reading for Content Mastery
Section 1 Section 2
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Earth in Space Time and Seasons
Directions: Choose the correct term from the list to complete each sentence. Some terms may be used more than once. Earth
magnetic field
sphere
ellipse
Mars
Venus
Directions: Complete the paragraphs using the terms listed. Some terms may be used more than once. west
axis
divided
east
zones
rotation
Earth spins, or rotates, 360˚ on its 11. _______________ once every 24 hours, which helps us measure the passing hours of each day. Earth’s time 12. _______________ are based on the fact that Earth spins through 15˚ each hour of the day. We know this because 360˚, the number of degrees Earth spins each day, 13. _______________ by 24, the number of hours in a day, equals 15˚. As Earth rotates, the Sun appears to rise in the 14. _______________ . As the day passes, the Sun appears higher in the sky, begins to descend, then sets in the 15. _______________ . The Sun is not rising and setting, though; it’s Earth’s 16. _______________ that makes the Sun appear to move across the sky.
16 The Earth-Moon-Sun System
Copyright © Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.
1. _______________ is nearly the same size as Earth. 2. _______________ is much smaller than Earth and has a very thin atmosphere. 3. An _______________ is an elongated, closed curve with two foci, or focal points. 4. Earth is shaped like a _______________ . 5. A _______________ caused by Earth’s rotation and movement in its core protects the planet from the Sun’s harmful radiation. 6. Earth travels around the Sun in a pattern shaped like an _______________ . 7. The planet where it is hot wherever you go is _______________ . 8. _______________ is the only planet we know of that can support life. 9. A round, three-dimensional object is called a _______________ 10. Oceans on _______________ absorbed much of the carbon dioxide in its early atmosphere, making it possible for life to flourish.
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Directed Reading for Content Mastery
Section 3
Class ■
Earth’s Moon
Directions: Complete the sentences by writing the letters of the correct terms on the lines provided. 1. This is Earth’s nearest neighbor in space. a. the Sun c. the Moon b. Mercury d. Venus 2. The period of time it takes the Moon to revolve once around Earth is called a _____. a. synodic month c. lunar month b. sidereal month d. solar month 3. This term is used to refer to the rise and fall in sea level. a. tide c. lunar tide b. spring tide d. neap tide 4. _____ reflects from the Moon’s surface and causes it to shine. a. Moonlight c. Starlight b. Meteorite d. Sunlight 5. Which is not a phase of the Moon? a. new moon c. waxing crescent b. waning crescent d. waning synodic
Copyright © Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.
6. This occurs when the Sun, the Moon, and Earth line up perfectly. a. neap tide c. eclipse b. waning gibbous d. tide 7. A _____ occurs when the Moon is between Earth and the Sun. a. new moon c. harvest moon b. full moon d. crescent moon 8. When the moon appears to grow larger, it is _____. a. warming c. waning b. waxing d. warning 9. This is the darkest portion of the Moon’s shadow during a solar eclipse. a. penumbra c. umbra b. lumbar d. sunbra 10. A(n) _____ occurs when Earth’s shadow falls on the Moon. a. umbra eclipse c. solar eclipse b. penumbra eclipse d. lunar eclipse 11. The term for a depression on the Moon’s surface is _____. a. crater c. maria b. mountain d. regolith 12. _____ is the oldest identifiable impact feature on the Moon’s surface. a. Clementine c. South Pole-Aitken Basin b. Lunar Prospector d. Giant impact
The Earth-Moon-Sun System
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Key Terms
Directed Reading for Content Mastery
The Earth-Moon-Sun System
Directions: Unscramble the terms in italics to complete the sentences below. Write the terms on the lines provided, then circle the term in the word search puzzle below. 1. The Moon is composed of materials similar to Earth’s lentam. 2. The Moon’s trayvig affects Earth’s tides more than that of the Sun. 3. Earth is shaped like a reesph. 4. A tercar is a depression on the Moon’s surface. 5. Diets are affected by both the Moon and the Sun. 6. Vootinleur is the motion of Earth in its orbit around the Sun. 7. The shape of Earth’s orbit is lipletilac. 8. Licetoss occurs when the Sun is at its greatest distance north or south of the equator. 9. Noxique is the term for when the Sun is directly above the equator.
11. A etim ezon is a 15˚-wide area in which the time is the same. 12. tadilute is the angular distance north or south of the equator. T
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18 The Earth-Moon-Sun System
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Copyright © Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.
10. Earth’s gemantic field is caused by its rotation and the movement of matter within its core.
