Earth Moon and Beyond Earth and the Moon
Earth, Moon, and Beyond
Earth and the Moon in Space (#1) The moon is the brightest object in the night sky and _____ is its nearest neighbor in space Pulled by the sun’s _______, the Earth-moon system _______, or travels in a closed path, around the sun The path Earth takes as it revolves around the sun is called an ______ and this path it follows is not quite circular, but is an ______ As Earth orbits the sun, it rotates, or spins on its _______, which is an imaginary line that passes through Earth’s _______ and its North and South Poles
Earth and the Moon in Space (#2) Earth’s _____ results in day and night, so when a location on Earth faces the sun it is day and when it faces away it is _______ Pulled by the _____’s gravity, the _______ revolves around the Earth in an elliptical orbit When the moon is closet to the Earth, it is about _____ miles away Like Earth, the moon rotates on its _____ The moon takes ______ Earth days to complete one ______ This makes a cycle on the moon of one day and one night that is ____ Earth days long
Earth and the Moon in Space (#3) Even though the moon rotates, the same ______ of the moon always faces Earth The moon orbits Earth in 27. 3 days, the exact same time it takes to _______ once on its ______ We see the moon from Earth because ______ is reflected of its surface As the moon orbits the Earth, its ____ in the sky changes and this produces the different shapes, or ____ of the moon we see each month
Moon Phases (p. D 6 and D 7) The ____ moon occurs when the moon is positioned between the Earth and the sun; the moon cannot be seen in this phase About two weeks after a new moon, the moon is on the opposite side of Earth and the entire sunlit half is visible, creating a _______ moon The _______ quarter and ____ quarter, often called “half moons”, happen when the moon is at a 90 degree angle with the respect to the Earth and sun _____ refers to the increase in how much of the moon is visible after a new moon _____ refers to the decrease in the how much of the moon is visible after a full moon
Solar Eclipse All bodies in the solar system produce _____ in space An _____ occurs when one object passes through the shadow of another A solar eclipse or a lunar eclipse may occur during a ______ moon or a _______ moon, when the Earth, the sun, and the moon line up A _____ eclipse occurs when Earth passes through a new moon’s _____ and ______ is blocked from Earth’s view
Lunar Eclipse �A lunar eclipse occurs when the full moon passes through Earth’s ____ When _____ passes between the sun and moon it blocks certain light but the color ______ may appear due to the Earth’s atmosphere bending of that color Lunar eclipses do not occur every month because the moon usually passes above or below Earth’s ______ Only _______ eclipses-two ____ and five _______ occur in a single year and are often partial eclipses
The Moon’s Surface When the moon first formed, its surface was hot, molten _____ and as it cooled it formed a rocky _______ Three types of landscapes you will see are: _____, and dark, _____ areas _____ vary greatly in size and form when meteors hit the surface _____ areas of dark hardened lava and formed when hot, _____ rock overflowed from the interior through cracks onto the moon’s surface ______ makes up most of the moon’s surface and are rough, mountainous regions
Comparing Earth’s and Moon’s Surfaces Both Earth and the moon are _______ and fairly _______ The same materials (calcium, aluminum, oxygen, silicone, and iron) that are make up the Earth are found on the __________ are found on both, but the _______ has many more than _____ Unlike Earth, the moon has no _____ The moon’s landscape is not ______ by wind and water and thus changes very little
Exploring the Solar System Invention of the _____ allowed people to observe objects in space with much greater detail as it _____, or makes larger, distant objects Any natural or artificial object that orbits another object is called a _____ Sputnik, a satellite launched by the Soviet Union in 1957, was about twice the size of a ____ ball and carried instruments to measure the ____ and _____ of Earths upper atmosphere
To the Moon and Beyond One of the well-known American space programs was ________ and they landed twelve humans on the ____ between 1969 and 1972 These _____ set up experiments and brought back samples of _______ A ________ is a robot vehicle used to explore deep space The _____ space probes have sent back pictures of Jupiter, Saturn, Uranus, and Neptune and are still traveling through space Today, scientists use the Hubble Space _____, ______, and __________ to better understand Earth, the solar system, and what lies beyond
Space Exploration in the Future The launch of the first modules in the International Space Station in 1998 marked a new era in _______ exploration Settlements may one day be built on the _____, or even on _______
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