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Chapter 25.1: Exploring the Solar System and 25.5 The Origin of the
Chapter 25.1: Exploring the Solar System and 25.5 The Origin of the

... • According to the Nebular Theory, the solar nebula formed from the material expelled by previous stars. • Nearly all of the mass of the solar nebula, about 99.9% became concentrated near the center – where the SUN would form in this region. • 10 million years after this solar nebula formed, Nuclear ...
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... volcanism. MOON – Earth’s moon, ¼ the diameter of Earth, highlands, maria, no water or atmosphere, Apollo Landers. MARS: Terrestrial, thin CO2 atmosphere (less than 1/100 atm), cold, polar caps, “started” plate tectonic activity, may have had life in past, about half the size of Earth, Viking Lander ...
Part One: _____
Part One: _____

... Tides and Moon Phases  Define tides: The daily rise and fall of Earth’s waters on the shorelines.  What causes the tides? Caused by the gravitational pull between the Earth, moon, and Sun.  Which has a greater affect on the tides, the Sun or the Moon? Why?? The Moon has a greater affect on the t ...
Section 2 - TeacherWeb
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... Section 3: The Earth System Earth’s Four Spheres • Atmosphere—Envelope of gases surrounding Earth; least dense and outermost sphere • Lithosphere—Solid crust of the planet; forms continents, islands, and ocean floor • Hydrosphere—Earth’s water; 70 percent of Earth’s surface, including water in liqui ...
Formation of the Solar System
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... • Most of the water started out as comets—icy bodies--got too close to the ________ ________________________ early Earth. • Because of the heat, the water _____________ and became part of the ___________________. • As Earth cooled, the water _________________ and fell as ...
Directed Reading B - Vista Middle School
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... a. because they are very hot b. because they are very dense and rocky c. because most are gas giants d. because they can support life 2. Name three ways the inner planets differ from the outer planets. ...
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... • Develop innovative methods to convey ideas and scientific method. • Emphasize universal nature of physical laws. • Emphasize data taking and analysis. • Emphasize deductive reasoning to generate predictions. • Stimulate independent thought and research. ...
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... A small glowing nucleus with a diameter of only a few kilometers can sometimes be detected within a coma. As comets approach the sun, some, but not all, develop a tail that extends for millions of kilometers. • Comets originate in two regions of the outer solar system. Those with short orbital perio ...
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... The inner four planets are called terrestrial planets. That means that they are like the earth in some ways. The terrestrial planets Mercury, Venus, Earth, Mars, and the earth's moon have similar compositions and densities. These planets are close to the sun, rocky, and dense. They are fairly small. ...
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... 11. Jupiter’s Great Red Spot is a(n) _________________________ larger than Earth. 12. All of the _____________ planets have many moons. 13. If you are in a car that stops suddenly, your body keeps moving because it has ____________________. 14. Newton’s law of ________________________ states that ev ...
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...  A satellite is an object in space that circles another object.  A mixture of ice, dust, and rock that circles the Sun is a comet.  The order of the planets in our Solar System from closest to the Sun to furthest from the Sun is Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune.  A m ...
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... Misconception 1: Do all objects in the solar system rotate in the same direction? If viewed from above, most objects in the solar system rotate counterclockwise. Earth rotates toward the east, which is why the Sun “sets” in the west. Interestingly, Venus rotates in the opposite direction of Earth, a ...
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the free PDF resource

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Solar System Scale Handout
Solar System Scale Handout

... was about 8,574,922,450 mi from the Sun - more than twice the distance from the Sun to icy Pluto. Needless to say, our solar system doesn't fit real well on paper. Scientists figured out a while ago that writing out those huge numbers wasn't the best use of their time so they invented the Astronomic ...
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The Solar System assign 5

... (4)Science is a way of learning about the natural world. Students should know how science has built a vast body of changing and increasing knowledge described by physical, mathematical, and conceptual models. (8) Earth and space. The student knows that there are recognizable patterns in the natural ...
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Earth's rotation



Earth's rotation is the rotation of the planet Earth around its own axis. The Earth rotates from the west towards east. As viewed from North Star or polestar Polaris, the Earth turns counter-clockwise.The North Pole, also known as the Geographic North Pole or Terrestrial North Pole, is the point in the Northern Hemisphere where the Earth's axis of rotation meets its surface. This point is distinct from the Earth's North Magnetic Pole. The South Pole is the other point where the Earth's axis of rotation intersects its surface, in Antarctica.The Earth rotates once in about 24 hours with respect to the sun and once every 23 hours 56 minutes and 4 seconds with respect to the stars (see below). Earth's rotation is slowing slightly with time; thus, a day was shorter in the past. This is due to the tidal effects the Moon has on Earth's rotation. Atomic clocks show that a modern-day is longer by about 1.7 milliseconds than a century ago, slowly increasing the rate at which UTC is adjusted by leap seconds.
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