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... 40. Explain why astronomers created the astronomical unit and the light year. In your explanation, tell how long each unit is in kilometres. Give an example of when each unit would be used. (5) ...
... 40. Explain why astronomers created the astronomical unit and the light year. In your explanation, tell how long each unit is in kilometres. Give an example of when each unit would be used. (5) ...
Document
... The multi-colored area shows a dust disk surrounding a newborn star. The red-orange area at the center represents the brightest region, which contains the young star. It is surrounded by the cooler, dusty disk, which appears as yellow, green and blue. The diameter of the disk is about 20 times large ...
... The multi-colored area shows a dust disk surrounding a newborn star. The red-orange area at the center represents the brightest region, which contains the young star. It is surrounded by the cooler, dusty disk, which appears as yellow, green and blue. The diameter of the disk is about 20 times large ...
Chapter 1: Solar System
... nucleus is a solid inner core, while the coma is the fuzzy outer layer of the head which is essentially a cloud of dust and gas. The tail contains dust and gas that trail the head of the comet as it approaches the sun. c. How does a comet’s appearance change as it approaches the sun? Why do these ch ...
... nucleus is a solid inner core, while the coma is the fuzzy outer layer of the head which is essentially a cloud of dust and gas. The tail contains dust and gas that trail the head of the comet as it approaches the sun. c. How does a comet’s appearance change as it approaches the sun? Why do these ch ...
Print this PDF
... miles. Millions of meteors enter the Earth's atmosphere every day, though the vast majority are observed at night. Their visibility in the night sky is due to air friction which causes the meteor to glow and emit a trail of gasses and melted particles th ...
... miles. Millions of meteors enter the Earth's atmosphere every day, though the vast majority are observed at night. Their visibility in the night sky is due to air friction which causes the meteor to glow and emit a trail of gasses and melted particles th ...
Our Solar System
... • Our sun is 1 of trillions of stars in the universe. Stars are found in groups held together by gravity. • A huge group of stars is called a galaxy. • Our entire universe is made up of thousands of galaxies. • The images below show you how small we are compared to the entire universe. ...
... • Our sun is 1 of trillions of stars in the universe. Stars are found in groups held together by gravity. • A huge group of stars is called a galaxy. • Our entire universe is made up of thousands of galaxies. • The images below show you how small we are compared to the entire universe. ...
Solar System Basics 1 - Usk Astronomical Society
... The Sun is huge. If it were hollow, over a million and a quarter Earth's would fit inside it. The Sun is also massive and contains about 99% of the matter in the solar system and so its gravity dominates the planets; holding them in orbit. Such a mass as the Sun has a nuclear core releasing energy o ...
... The Sun is huge. If it were hollow, over a million and a quarter Earth's would fit inside it. The Sun is also massive and contains about 99% of the matter in the solar system and so its gravity dominates the planets; holding them in orbit. Such a mass as the Sun has a nuclear core releasing energy o ...
chapter 13 review
... 9c) The next total solar eclipses will be visible in Canada on August 1, 2008, in the northern Arctic, and on April 8, 2024, in more populated areas. There is usually a total lunar eclipse visible from Canada every year. Almost an entire hemisphere sees a total eclipse when the Moon enters Earth’s ...
... 9c) The next total solar eclipses will be visible in Canada on August 1, 2008, in the northern Arctic, and on April 8, 2024, in more populated areas. There is usually a total lunar eclipse visible from Canada every year. Almost an entire hemisphere sees a total eclipse when the Moon enters Earth’s ...
Threats to Earth - World of Teaching
... ______________ 65 ______________ years ago, leading to million the ______________ of the ______________. extinction dinosaurs ______________ could not penetrate the ______________ sunlight atmosphere temperatures fell, causing ______________ climate so ______________ change. Asteroids craters extinc ...
... ______________ 65 ______________ years ago, leading to million the ______________ of the ______________. extinction dinosaurs ______________ could not penetrate the ______________ sunlight atmosphere temperatures fell, causing ______________ climate so ______________ change. Asteroids craters extinc ...
Meteors, Meteoroids, and Meteorites
... Earth's surface. One such meteorite exploded in Siberia in 1908. It left a 20-mile area where trees were knocked down and scorched. There were no traces found of the meteorite. In October 2005, a 1400 pound meteorite was found in Kansas. Scientists believe it fell about 10,000 years ago. It was cove ...
... Earth's surface. One such meteorite exploded in Siberia in 1908. It left a 20-mile area where trees were knocked down and scorched. There were no traces found of the meteorite. In October 2005, a 1400 pound meteorite was found in Kansas. Scientists believe it fell about 10,000 years ago. It was cove ...
Asteroids • Small, rocky objects in orbit around the Sun. +
... Asteroids • Small, rocky objects in orbit around the Sun. • Sizes up to hundreds of km. • 26 known ones with sizes > 200 km. ...
... Asteroids • Small, rocky objects in orbit around the Sun. • Sizes up to hundreds of km. • 26 known ones with sizes > 200 km. ...
Chapter 6 Study Guide
... how much of the sunlit side of the moon faces Earth. how much of the moon’s surface is lit by the sun. whether or not an eclipse is occurring. ...
... how much of the sunlit side of the moon faces Earth. how much of the moon’s surface is lit by the sun. whether or not an eclipse is occurring. ...
Asteroids, meteors, meteorites
... goal is to get a statistical picture of orbiting rocks anywhere in the solar system. 1980 -- Physicist Luis Alvarez and his team blames the dinosaur extinction on the environmental havoc of a collision. The resulting firestorm and a global soot and dust cloud, they argue, cooled the planet enough to ...
... goal is to get a statistical picture of orbiting rocks anywhere in the solar system. 1980 -- Physicist Luis Alvarez and his team blames the dinosaur extinction on the environmental havoc of a collision. The resulting firestorm and a global soot and dust cloud, they argue, cooled the planet enough to ...
Science 9 Test Review-Space Answers 1. pg 434 2a
... Orbital period – the period of time required for an orbiting object to complete one revolution Constellations – a group of stars that forms shapes or patterns Probe – an unmanned space craft sent into space to obtain data and complete research Satellite – a large natural object that travels in an or ...
... Orbital period – the period of time required for an orbiting object to complete one revolution Constellations – a group of stars that forms shapes or patterns Probe – an unmanned space craft sent into space to obtain data and complete research Satellite – a large natural object that travels in an or ...
Biodiversity through Earth history
... marine and terrestrial species (both animal and plant) • Iridium: normally deposited at a slow, known, rate from extraterrestrial sources. Iridium concentrations in the layer at the K-T boundary are so high that it could not have been deposited by normal deposition, must have been a massive, sudden ...
... marine and terrestrial species (both animal and plant) • Iridium: normally deposited at a slow, known, rate from extraterrestrial sources. Iridium concentrations in the layer at the K-T boundary are so high that it could not have been deposited by normal deposition, must have been a massive, sudden ...
Name: Orbits and Escape Velocity – Practice 1. A concrete block of
... 2. Miniature Black Holes: Left over from the big-bang beginning of the universe, tiny black holes might still wander through the universe. If one with a mass of 1.0 × 1011 kg (and a radius of only 1.0 × 10-16 m) reached Earth, at what distance from your head would its gravitational pull on you match ...
... 2. Miniature Black Holes: Left over from the big-bang beginning of the universe, tiny black holes might still wander through the universe. If one with a mass of 1.0 × 1011 kg (and a radius of only 1.0 × 10-16 m) reached Earth, at what distance from your head would its gravitational pull on you match ...
THE COSMIC CRASH
... the comet hits an ocean, a pall of dust rises from underwater sediment, and a tidal wave about 900 m high races across the sea and hundreds of kilometers inland.” If that sounds like science fiction, think again. Comets and asteroids have crashed into Earth in the past. Craters marking the points of ...
... the comet hits an ocean, a pall of dust rises from underwater sediment, and a tidal wave about 900 m high races across the sea and hundreds of kilometers inland.” If that sounds like science fiction, think again. Comets and asteroids have crashed into Earth in the past. Craters marking the points of ...
Benchmark One Study Guide: Science Benchmark Wed
... 7. What percentage of Earth is dark, or having night at any given time? S6E1 E – Gravity 1. What is the force that governs motion in the solar system? 2. What two factors affect the gravitational force between two objects? 3. Why do the planets revolve around the Sun? 4. Why does the moon revolve o ...
... 7. What percentage of Earth is dark, or having night at any given time? S6E1 E – Gravity 1. What is the force that governs motion in the solar system? 2. What two factors affect the gravitational force between two objects? 3. Why do the planets revolve around the Sun? 4. Why does the moon revolve o ...
Geological Processes, Moon, and Mercury
... Mercury's craters are less dense than the lunar highlands, indicating the they were resurfaced more recently. Mercury has one impact crater, the Caloris Basin, that spans more than half of the radius of the planet. The small number of craters in the basin tell us it happened late in the heavy bombar ...
... Mercury's craters are less dense than the lunar highlands, indicating the they were resurfaced more recently. Mercury has one impact crater, the Caloris Basin, that spans more than half of the radius of the planet. The small number of craters in the basin tell us it happened late in the heavy bombar ...
Small Bodies in the Solar System
... Hitting the Earth? • Chances are the Earth doesn't have to worry about a collision with a comet. • Asteroids are another matter. • Scientists already think that a large asteroid may have hit the Earth when the dinosaurs were alive about 65 million years ago. • That collision may have changed the at ...
... Hitting the Earth? • Chances are the Earth doesn't have to worry about a collision with a comet. • Asteroids are another matter. • Scientists already think that a large asteroid may have hit the Earth when the dinosaurs were alive about 65 million years ago. • That collision may have changed the at ...
Asteroids
... can range in size from 0.7 to 20 km in diameter. As comets approach the Sun they develop enormous tails of luminous material that extend for millions of kilometers away from the Sun. When far from the Sun, the center is very cold and its material is frozen solid. In this state comets are sometimes r ...
... can range in size from 0.7 to 20 km in diameter. As comets approach the Sun they develop enormous tails of luminous material that extend for millions of kilometers away from the Sun. When far from the Sun, the center is very cold and its material is frozen solid. In this state comets are sometimes r ...
Extinction Event www.AssignmentPoint.com An extinction (level
... taxonomic families of marine invertebrates and vertebrates every million years. Marine fossils are mostly used to measure extinction rates because of their superior fossil record and stratigraphic range compared to land organisms. ...
... taxonomic families of marine invertebrates and vertebrates every million years. Marine fossils are mostly used to measure extinction rates because of their superior fossil record and stratigraphic range compared to land organisms. ...
Asteroids, Comets, Meteors…what`s the difference
... Asteroids, Comets, Meteors…what’s the difference? Astronomy Name: ...
... Asteroids, Comets, Meteors…what’s the difference? Astronomy Name: ...
PowerPoint file - High Point University
... that Pluto formed as part of a larger group of comet-like objects, which should still be there. • 1980s: Theorists predicted 200 million objects between 34 and 50 AU. ...
... that Pluto formed as part of a larger group of comet-like objects, which should still be there. • 1980s: Theorists predicted 200 million objects between 34 and 50 AU. ...
PowerPoint Presentation - AST121 Introduction to Astronomy
... that Pluto formed as part of a larger group of comet-like objects, which should still be there. • 1980s: Theorists predicted 200 million objects between 34 and 50 AU. ...
... that Pluto formed as part of a larger group of comet-like objects, which should still be there. • 1980s: Theorists predicted 200 million objects between 34 and 50 AU. ...
NASA FACT SHEET: Asteroids, Comets, and NASA Research
... by asteroids and comets ever since their formation -- just look at the Moon's craters through a small telescope or a good pair of binoculars. NASA supports several ground-based programs and related technology development efforts that use sensitive electronic detectors to scan the skies for undiscove ...
... by asteroids and comets ever since their formation -- just look at the Moon's craters through a small telescope or a good pair of binoculars. NASA supports several ground-based programs and related technology development efforts that use sensitive electronic detectors to scan the skies for undiscove ...
Impact event
An impact event is a collision between celestial objects causing measurable effects. Impact events have physical consequences and have been found to regularly occur in planetary systems, though the most frequent involve asteroids, comets or meteoroids and have minimal impact. When large objects impact terrestrial planets like the Earth, there can be significant physical and biospheric consequences, though atmospheres mitigate many surface impacts through atmospheric entry. Impact craters and structures are dominant landforms on many of the Solar System's solid objects and present the strongest empirical evidence for their frequency and scale.Impact events appear to have played a significant role in the evolution of the Solar System since its formation. Major impact events have significantly shaped Earth's history, have been implicated in the formation of the Earth–Moon system, the evolutionary history of life, the origin of water on Earth and several mass extinctions. Notable impact events include the Chicxulub impact, 66 million years ago, believed to be the cause of the Cretaceous–Paleogene extinction event.Throughout recorded history, hundreds of Earth impacts (and exploding bolides) have been reported, with some occurrences causing deaths, injuries, property damage, or other significant localised consequences. One of the best-known recorded impacts in modern times was the Tunguska event, which occurred in Siberia, Russia, in 1908. The 2013 Chelyabinsk meteor event is the only known such event to result in a large number of injuries, and the Chelyabinsk meteor is the largest recorded object to have encountered the Earth since the Tunguska event.The most notable non-terrestrial event is the Comet Shoemaker–Levy 9 impact, which provided the first direct observation of an extraterrestrial collision of Solar System objects, when the comet broke apart and collided with Jupiter in July 1994. Most of the observed extrasolar impacts are the slow collision of galaxies; however, in 2014, one of the first massive terrestrial impacts observed was detected around the star NGC 2547 ID8 by NASA's Spitzer space telescope and confirmed by ground observations. Impact events have been a plot and background element in science fiction.