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Level 1 internal assessment resource
Level 1 internal assessment resource

... The new moons of Jupiter and Saturn have been discovered in the last few years because we have better telescopes in space like the Hubble telescope and we have sent satellites to both Jupiter and Saturn. The Hubble telescope is outside the Earth’s atmosphere and not subjected to atmospheric fluctuat ...
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... depth of about 10,000 km, the pressure is high enough to change the hydrogen gas into a liquid. Deeper still, the pressure changes the liquid hydrogen into a metallic liquid state. Unlike most planets, Jupiter radiates much more energy into space than it receives from the sun. This is because energy ...
CHAPTER 20
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... depth of about 10,000 km, the pressure is high enough to change the hydrogen gas into a liquid. Deeper still, the pressure changes the liquid hydrogen into a metallic liquid state. Unlike most planets, Jupiter radiates much more energy into space than it receives from the sun. This is because energy ...
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... 29) Which of the following is not one of, nor follows directly from, Kepler's laws? A) More distant planets move at slower speeds. B) The orbit of each planet about the Sun is an ellipse with the Sun at one focus. C) The force of attraction between any two objects decreases with the square of the di ...
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... close 11.7 million kilometers (7.3 million miles) of Earth. Around that time, it disintegrated even more. Scientists counted 68 fragments. The two largest chunks are called B and C. Each is several hundred meters wide. The scientists studied both chunks using NASA's Infrared Telescope Facility and t ...
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... 14. Briefly explain why we think our solar system ended up with rocky worlds in its inner regions and icy or gaseous worlds in its outer regions. How do we explain the small bodies that populate the asteroid belt, Kuiper belt, and Oort cloud? According to the nebular model, the solar system formed ...
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... Explanation: Born in 1564, Galileo used a telescope to explore the Solar System. In 1610, he became the first to be amazed by Saturn’s rings, After nearly 400 years, Saturn’s magnificent rings still offer one of the most stunning astronomical sights. Uniquely bright compared to the rings of the othe ...
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Galilean moons



The Galilean moons are the four largest moons of Jupiter—Io, Europa, Ganymede, and Callisto. They were discovered by Galileo Galilei around January 1610 and were the first group of objects found to orbit another planet. Their names derive from the lovers of Zeus. They are among the most massive objects in the Solar System with the exception of the Sun and the eight planets, with radii larger than any of the dwarf planets. Ganymede is the largest moon in the Solar System, and is even bigger than the planet Mercury. The three inner moons—Io, Europa, and Ganymede—are in a 4:2:1 orbital resonance with each other.The Galilean moons were discovered in either 1609 or 1610 when Galileo made improvements to his telescope, which enabled him to observe celestial bodies more distinctly than ever. Galileo's discovery showed the importance of the telescope as a tool for astronomers by proving that there were objects in space that cannot be seen by the naked eye. More importantly, the incontrovertible discovery of celestial bodies orbiting something other than Earth dealt a serious blow to the then-accepted Ptolemaic world system, or the geocentric theory in which everything orbits around Earth.Galileo initially named his discovery the Cosmica Sidera (""Cosimo's stars""), but the names that eventually prevailed were chosen by Simon Marius. Marius discovered the moons independently at the same time as Galileo, and gave them their present names, which were suggested by Johannes Kepler, in his Mundus Jovialis, published in 1614.
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