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Ask an Astronomer
Ask an Astronomer

... The Sun is mostly made of hydrogen atoms. When two of these hydrogen atoms smash together inside the Sun, they form a helium atom, only the helium atom weighs a tiny little bit less than the two hydrogen atoms combined. This "missing mass" has been converted into energy, which shines out into space ...
Chapter 23 Vocabulary
Chapter 23 Vocabulary

... 2. inner planets- the four solid, rocky planets closest to the sun; Mercury, Venus, Earth, and Mars 3. Mars- in our solar system, the fourth planet from the sun 4. Jupiter- in our solar system, the fifth planet from the sun; largest planet, mostly gas and liquid 5. comet- moss of frozen gasses and r ...
Notes with questions
Notes with questions

... Basic Planet Categories • Terrestrial planets ...
Astronomy
Astronomy

... Name: __________________________________________________ Per: _______ Date: ______________ By the end of this unit, you will be able to: ...
Comet Hayukatake
Comet Hayukatake

... back out into space where new objects incorporate them. • Carbon and Oxygen are about 10 times more abundant than any other element, except for hydrogen and helium. • Both of these elements are made in stars where 3 Helium nuclei are fused into one Carbon, and an additional Helium makes Oxygen. ...
Terrestrial Planets
Terrestrial Planets

... We always see the same face of the Moon. So period of orbit = period of rotation Why? ...
The Moon was born about 4.5 billion years ago
The Moon was born about 4.5 billion years ago

... of those space rocks burn as they go through the atmosphere and never reach the surface. Our planet is very “active” too! There are active volcanoes, strong winds, heavy rains, trees and plants that constantly change the face of our planet and many of the Earth’s craters change shape with a time or ...
The Solar System By Ali Raouidah - Beyond Earth
The Solar System By Ali Raouidah - Beyond Earth

... the most volcanically active body in our solar system. Ganymede is the largest planetary moon and is the only moon in the solar system known to have its own magnetic field. A liquid ocean may lie beneath the frozen crust of Europa. Icy oceans may also lie deep beneath the crusts of Callisto and Gany ...
Filled In Notepacket For Unit
Filled In Notepacket For Unit

... These are small enough that they almost always break up in the upper atmosphere (Airburst), and therefore do not cause damage. 2. Energy of a few hundred to 1000 nuclear explosions Perhaps every 100 years? These ones are around the size of a large car to a building. They also often break up in the a ...
7th Grade Science Unit 2
7th Grade Science Unit 2

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chapter 1 section 2
chapter 1 section 2

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SOLAR SYSTEM STUDY GUIDE – 8 th grade Science (Coe
SOLAR SYSTEM STUDY GUIDE – 8 th grade Science (Coe

... c. Waxing and waning gibbous d. Waxing and waning crescents e. First quarter f. Third quarter 13. Be able to calculate your weight on other planets using a chart ...
Study GuideCh6 with page refs
Study GuideCh6 with page refs

... 7. Meteoroids become meteors when they enter the Earth’s atmosphere. WB 137/ Text 312 8. Two factors that keep the planets in orbit around the sun are inertia and gravitation. WB 140/ Text p.320 9. A more accurate model of the solar system is one that is elliptical. WB 141/ text 321 10. Planets that ...
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... Example s-4 An asteroid headed directly toward earth, has a speed of 12000 m/sec relative to the planet when it is at a distance of 10 Earth radii from Earth's center. Ignoring the effects of the terrestrial atmosphere on the asteroid, find the asteroid's speed when it reaches Earth's surface.  So ...
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... • Solar eclipses can occur only at new moon. • Solar eclipses can be partial, total, or annular. ...
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Solar System

... •  Compares planets and other solar system bodies to help understand how they formed and evolved •  Diameters: 10 times Earth=Jupiter & 10Jupiters=Sun •  Distances: Sun-Earth=8light-minutes & Sun-Jupiter=1Hour ...
Formation of Our Solar System Formation of Our
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Speed of Planets Google Document File
Speed of Planets Google Document File

... 2. The dwarf planet Ceres orbits the Sun at an average distance of 2.8AU .Plot the point that would represent Ceres on the graph. What is the average speed of Ceres? 3. The dwarf planet Pluto orbits at an average distance from the Sun of 39.5 AU. Extrapolating from your graph, what is Pluto’s averag ...
Swavel_Instructional_Design
Swavel_Instructional_Design

... makes science especially important because it will be the first year for the Ohio Achievement Assessment (OAA) in science. Fifth grade science teachers not only cover all of the new material for their grade, but they must also review all of the previous years’ information. This is yet another reason ...
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How to study for this course Before coming to class

... hypothesis, the inner planets are dense and rocky because the inner planets were the first to condense from the solar nebula (p. 6) Ch01-intro-nat-dis ...
P1 C12 Gravity and Planetary Motion
P1 C12 Gravity and Planetary Motion

... the space shuttle, and they respond that they thought gravity was just a lot weaker up there. Convince them by calculating how much weaker gravity is 300 km above Earth’s surface. ...
Solar System Test Review
Solar System Test Review

... 3. List the Inner Planets in order to the Sun (closet to farthest) and describe their location to the Sun. a. Mercury - closest to the sun b.Venus – 2nd c. Earth – 3rd d. Mars – 4th 4. List the Outer planets in order to the Sun (closet to farthest). a. Jupiter – 5th b. Saturn – 6th c.Uranus – 7th d. ...
Solar System Test Review
Solar System Test Review

... 3. List the Inner Planets in order to the Sun (closet to farthest) and describe their location to the Sun. a. Mercury - closest to the sun b.Venus – 2nd c. Earth – 3rd d. Mars – 4th 4. List the Outer planets in order to the Sun (closet to farthest). a. Jupiter – 5th b. Saturn – 6th c.Uranus – 7th d. ...
ROTATION AND REVOLUTION
ROTATION AND REVOLUTION

... Revolution is a term that describes the motion of one object as it moves around another object. While each planet rotates about its axis, it is also revolving around the Sun. Even though the Sun appears to move across the sky each day, Earth is actually moving around the Sun. For many years, people ...
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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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