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Earth : The planet on which we live.
Moon : The natural satellite of the Earth.
Penumbra : The area in which the shadow of an object (the moon on the Earth) is partial, and the area in which a partial solar eclipse is experienced.
Sun : The star in our Solar System.
Umbra : The area in which the shadow of an object (the moon on the Earth) is total, and the area in which a total solar eclipse is experienced.
Aphelion : The point in an orbit that is farthest from the sun.
Perihelion : The point in an orbit that is closest to the sun.
Sun : The star in our Solar System.
Planet : A large celestial body that orbits a star.
Asteroids : (also called minor planets) They are rocky or metallic objects, most of which orbit the Sun in the asteroid belt between Mars and Jupiter.
Comets : They are small, icy bodies that orbit the sun. They have very long tails.
Meteoroids : They are small bodies that travel through space. They are stony and/or metallic and are smaller than asteroids. Most are very tiny.
Core : The Sun's core has a tremendously high temperature and pressure. The temperature is roughly 15 million °C. At this temperature, nuclear fusion occurs, turning four hydrogen nuclei into a single helium nucleus plus a LOT of energy. This "hydrogen burning" releases gamma rays (high-energy photons) and neutrinos (particles with no charge and almost no mass).
Radiative Zone : The next layer out from the core is this zone which emits radiation. This radiation diffuses outwards. The temperature ranges from 15 million °C to one million °C. It may take photons of radiation millions of years to pass through the radiative zone, as they gradually make their way outwards.
Convective Zone : In this next layer, photons continue to make their way outwards via convection (towards lower temperature and pressure). The temperature ranges from one million °C to 6,000 °C.
Photosphere: This is the lower atmosphere of the Sun and the part that we see (since it emits light at visible wavelengths). This layer is about 300 miles (500km) thick. The temperature is about 5,500 °C.
Chromosphere : This reddish layer is an area of rising temperatures. The temperature ranges from 6,000 °C (at lower altitudes) to 50,000 °C (at higher altitudes). This layer is a few thousand miles (or kilometers) thick. It appears red because hydrogen atoms are in an excite state and emit radiation near the red part of the visible spectrum. The Chromosphere is visible during solar eclipses (when the moon blocks the Photosphere).
Mercury : The closest planet to the Sun.
Venus : It is also called the morning star.
Mars : It is called the red planet.
Pluto : It is called "dwarf planet "
Saturn : A gas giant planet with easily visible rings and the sixth planet from the Sun.
Neil Armstrong : He said " This is one small step for a man, one giant leap for mankind. "
Across:4. | This reddish layer is an area of rising temperatures. The temperature ranges from 6,000 °C (at lower altitudes) to 50,000 °C (at higher altitudes). This layer is a few thousand miles (or kilometers) thick. It appears red because hydrogen atoms are in an excite state and emit radiation near the red part of the visible spectrum. The Chromosphere is visible during solar eclipses (when the moon blocks the Photosphere). | 6. | The point in an orbit that is closest to the sun. | 7. | (also called minor planets) They are rocky or metallic objects, most of which orbit the Sun in the asteroid belt between Mars and Jupiter. | 10. | It is also called the morning star. | 11. | They are small bodies that travel through space. They are stony and/or metallic and are smaller than asteroids. Most are very tiny. |
| 13. | The area in which the shadow of an object (the moon on the Earth) is partial, and the area in which a partial solar eclipse is experienced. | 17. | The natural satellite of the Earth. | 19. | In this next layer, photons continue to make their way outwards via convection (towards lower temperature and pressure). The temperature ranges from one million °C to 6,000 °C. | 21. | The point in an orbit that is farthest from the sun. | 22. | They are small, icy bodies that orbit the sun. They have very long tails. |
| | Down:1. | The closest planet to the Sun. | 2. | The Sun's core has a tremendously high temperature and pressure. The temperature is roughly 15 million °C. At this temperature, nuclear fusion occurs, turning four hydrogen nuclei into a single helium nucleus plus a LOT of energy. This "hydrogen burning" releases gamma rays (high-energy photons) and neutrinos (particles with no charge and almost no mass). | 3. | It is called the red planet. | 5. | The next layer out from the core is this zone which emits radiation. This radiation diffuses outwards. The temperature ranges from 15 million °C to one million °C. It may take photons of radiation millions of years to pass through the radiative zone, as they gradually make their way outwards. | 6. | It is called "dwarf planet " | 8. | A gas giant planet with easily visible rings and the sixth planet from the Sun. | 9. | The area in which the shadow of an object (the moon on the Earth) is total, and the area in which a total solar eclipse is experienced. |
| 12. | The star in our Solar System. | 14. | The star in our Solar System. | 15. | A large celestial body that orbits a star. | 16. | This is the lower atmosphere of the Sun and the part that we see (since it emits light at visible wavelengths). This layer is about 300 miles (500km) thick. The temperature is about 5,500 °C. | 18. | He said " This is one small step for a man, one giant leap for mankind. " | 20. | The planet on which we live. |
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Across:4. | This reddish layer is an area of rising temperatures. The temperature ranges from 6,000 °C (at lower altitudes) to 50,000 °C (at higher altitudes). This layer is a few thousand miles (or kilometers) thick. It appears red because hydrogen atoms are in an excite state and emit radiation near the red part of the visible spectrum. The Chromosphere is visible during solar eclipses (when the moon blocks the Photosphere). | 6. | The point in an orbit that is closest to the sun. | 7. | (also called minor planets) They are rocky or metallic objects, most of which orbit the Sun in the asteroid belt between Mars and Jupiter. | 10. | It is also called the morning star. | 11. | They are small bodies that travel through space. They are stony and/or metallic and are smaller than asteroids. Most are very tiny. |
| 13. | The area in which the shadow of an object (the moon on the Earth) is partial, and the area in which a partial solar eclipse is experienced. | 17. | The natural satellite of the Earth. | 19. | In this next layer, photons continue to make their way outwards via convection (towards lower temperature and pressure). The temperature ranges from one million °C to 6,000 °C. | 21. | The point in an orbit that is farthest from the sun. | 22. | They are small, icy bodies that orbit the sun. They have very long tails. |
| | Down:1. | The closest planet to the Sun. | 2. | The Sun's core has a tremendously high temperature and pressure. The temperature is roughly 15 million °C. At this temperature, nuclear fusion occurs, turning four hydrogen nuclei into a single helium nucleus plus a LOT of energy. This "hydrogen burning" releases gamma rays (high-energy photons) and neutrinos (particles with no charge and almost no mass). | 3. | It is called the red planet. | 5. | The next layer out from the core is this zone which emits radiation. This radiation diffuses outwards. The temperature ranges from 15 million °C to one million °C. It may take photons of radiation millions of years to pass through the radiative zone, as they gradually make their way outwards. | 6. | It is called "dwarf planet " | 8. | A gas giant planet with easily visible rings and the sixth planet from the Sun. | 9. | The area in which the shadow of an object (the moon on the Earth) is total, and the area in which a total solar eclipse is experienced. |
| 12. | The star in our Solar System. | 14. | The star in our Solar System. | 15. | A large celestial body that orbits a star. | 16. | This is the lower atmosphere of the Sun and the part that we see (since it emits light at visible wavelengths). This layer is about 300 miles (500km) thick. The temperature is about 5,500 °C. | 18. | He said " This is one small step for a man, one giant leap for mankind. " | 20. | The planet on which we live. |
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© 2013
PuzzleFast.com, Noncommercial Use Only