Comets Meteoroids and Asteroids comets A comet is
![Comets, Meteoroids and Asteroids Comets, Meteoroids and Asteroids](https://slidetodoc.com/presentation_image_h2/09aab10be1e9fa1f9948d038ca0c7634/image-1.jpg)
![comets A comet is a small, icy celestial body that orbits around the sun. comets A comet is a small, icy celestial body that orbits around the sun.](https://slidetodoc.com/presentation_image_h2/09aab10be1e9fa1f9948d038ca0c7634/image-2.jpg)
![A comet’s tail can be 250 kilometers long! Comets, such as Halley’s Comet, are A comet’s tail can be 250 kilometers long! Comets, such as Halley’s Comet, are](https://slidetodoc.com/presentation_image_h2/09aab10be1e9fa1f9948d038ca0c7634/image-3.jpg)
![meteoroids • meteoroids are small bodies that travel through space. a )smaller than asteroids; meteoroids • meteoroids are small bodies that travel through space. a )smaller than asteroids;](https://slidetodoc.com/presentation_image_h2/09aab10be1e9fa1f9948d038ca0c7634/image-4.jpg)
![How meteoroids are named: c) meteoroid-in space; • meteor- when it glows in Earth’s How meteoroids are named: c) meteoroid-in space; • meteor- when it glows in Earth’s](https://slidetodoc.com/presentation_image_h2/09aab10be1e9fa1f9948d038ca0c7634/image-5.jpg)
![asteroids • Asteroids are rocky or metallic objects in space that revolve around the asteroids • Asteroids are rocky or metallic objects in space that revolve around the](https://slidetodoc.com/presentation_image_h2/09aab10be1e9fa1f9948d038ca0c7634/image-6.jpg)
![• There about 40, 000 known asteroids that are over 0. 5 miles • There about 40, 000 known asteroids that are over 0. 5 miles](https://slidetodoc.com/presentation_image_h2/09aab10be1e9fa1f9948d038ca0c7634/image-7.jpg)
![• Spin_Around_the_Solar_System__A__The_Small_Pi eces__Asteroids__Comets__and_Pluto. asf • Spin_Around_the_Solar_System__A__The_Small_Pi eces__Asteroids__Comets__and_Pluto. asf](https://slidetodoc.com/presentation_image_h2/09aab10be1e9fa1f9948d038ca0c7634/image-8.jpg)
- Slides: 8
![Comets Meteoroids and Asteroids Comets, Meteoroids and Asteroids](https://slidetodoc.com/presentation_image_h2/09aab10be1e9fa1f9948d038ca0c7634/image-1.jpg)
Comets, Meteoroids and Asteroids
![comets A comet is a small icy celestial body that orbits around the sun comets A comet is a small, icy celestial body that orbits around the sun.](https://slidetodoc.com/presentation_image_h2/09aab10be1e9fa1f9948d038ca0c7634/image-2.jpg)
comets A comet is a small, icy celestial body that orbits around the sun. (a “dirty snowball”) • We see the ice turn into gas as the comet gets near the sun. It is made up of a: a) nucleus- solid, frozen ice, gas and dust b) coma- water vapor, CO 2, and other gases c) tail - made of dust and ionized gases; develops when the comet is near the Sun. Its long tail always points away from the sun, because of the force of the solar wind. The tail is most of what we see. •
![A comets tail can be 250 kilometers long Comets such as Halleys Comet are A comet’s tail can be 250 kilometers long! Comets, such as Halley’s Comet, are](https://slidetodoc.com/presentation_image_h2/09aab10be1e9fa1f9948d038ca0c7634/image-3.jpg)
A comet’s tail can be 250 kilometers long! Comets, such as Halley’s Comet, are named by the person who discovered them. Halley’s Comet is visible from Earth every 76 years. *The Oort Cloud is the area where comets originate (come from) •
![meteoroids meteoroids are small bodies that travel through space a smaller than asteroids meteoroids • meteoroids are small bodies that travel through space. a )smaller than asteroids;](https://slidetodoc.com/presentation_image_h2/09aab10be1e9fa1f9948d038ca0c7634/image-4.jpg)
meteoroids • meteoroids are small bodies that travel through space. a )smaller than asteroids; most are smaller than the size of a pebble. b) most come from asteroids that are broken apart by impacts with other asteroids. Other meteoroids come from the Moon, from comets and from the planet Mars. c) made from iron or nickel
![How meteoroids are named c meteoroidin space meteor when it glows in Earths How meteoroids are named: c) meteoroid-in space; • meteor- when it glows in Earth’s](https://slidetodoc.com/presentation_image_h2/09aab10be1e9fa1f9948d038ca0c7634/image-5.jpg)
How meteoroids are named: c) meteoroid-in space; • meteor- when it glows in Earth’s atmosphere (a “shooting star”) • meteorite- when falls to Earth
![asteroids Asteroids are rocky or metallic objects in space that revolve around the asteroids • Asteroids are rocky or metallic objects in space that revolve around the](https://slidetodoc.com/presentation_image_h2/09aab10be1e9fa1f9948d038ca0c7634/image-6.jpg)
asteroids • Asteroids are rocky or metallic objects in space that revolve around the Sun. • Most orbit the Sun in the asteroid belt between Mars and Jupiter. • Asteroids are also known as planetoids or minor planets.
![There about 40 000 known asteroids that are over 0 5 miles • There about 40, 000 known asteroids that are over 0. 5 miles](https://slidetodoc.com/presentation_image_h2/09aab10be1e9fa1f9948d038ca0c7634/image-7.jpg)
• There about 40, 000 known asteroids that are over 0. 5 miles (1 km) in diameter in the asteroid belt. • The first one discovered (and the biggest) is named Ceres. • 2 types: • a) dark ones made of metal, mostly iron and nickel • b) lighter-colored ones made of rock
![SpinAroundtheSolarSystemATheSmallPi ecesAsteroidsCometsandPluto asf • Spin_Around_the_Solar_System__A__The_Small_Pi eces__Asteroids__Comets__and_Pluto. asf](https://slidetodoc.com/presentation_image_h2/09aab10be1e9fa1f9948d038ca0c7634/image-8.jpg)
• Spin_Around_the_Solar_System__A__The_Small_Pi eces__Asteroids__Comets__and_Pluto. asf