PPT-The Physical Properties of Near Earth Asteroids

Dan Britt University of Central Florida What Do We Need to Know About NEA Physical Properties Asteroid Structure Rubble pile Coherent object Material Strength Tough Weak Mineralogy Thermal Properties. Unit 4. Appearances of comet Kohoutek (1973), Halley (1986), and Hale-Bopp (1997) caused great concern among superstitious.. Comet Hyakutake in 1996. Throughout history, comets have been considered as portents of doom, even very recently: . Decameter-scale Asteroids. Andrew Rivkin (JHU/APL). Target NEO 2 Workshop. Washington DC. Getting us on the same page. Compositions/albedos/densities/etc. go together, often assume other pieces when only one thing known. (2.2)PHYSICAL PROPERTY. A physical property is any characteristic of a material that can be observed or measured without changing the composition of the substances in the material. . Viscosity, conductivity, malleability, hardness, melting point, boiling point, and density are examples of physical properties.. & Meteors. Lectures will be available at: . homework.uoregon.edu. /pub/. elsa. /. haydock. / . Asteroid Belt Basic . Characteristics. Estimated 1 million are ~1km or larger; millions more are . smaller. Comets. one of the most glorious things to see in the sky is a comet.. May be visible for only days, weeks, or months. Comet. : chunks of ice and dust whose orbits are very long, narrow ellipses.. Think of them as a “dirty snowball”. shinning universe . there are billions of stars , millions of meteors, . hundreds of stars. , plenty of planets, many moons , a unique sun and many more celestial bodies. . Matter. Every element/compound is unique in some way from all others.. If you know enough about a substance, you can figure out what it is.. If you know what a substance is, you can know all types of things about it.. Information for this PowerPoint obtained from: . NSTA Online Module: Solar System: . Asteroids, Comets, and Meteorites . NASA. ESA. Windows2Universe.org. This is a meteorite that had been broken off of Mars from a large impact meteorite. It spent millions of years in space before landing in Antarctica.. I. Comets. A. What is a Comet?: . It is a small body orbiting the Sun that develops a ______ (a fuzzy atmosphere) and/or a ____ as it approaches the Sun. Comet nuclei range from _____________. __________. . 6.P.2.3. Warm Up . This is an example of matter; . Can you identify it?. How would you classify it?. Think of ways scientists could classify different types of matter?. Classification of Gold. At room temperature. I. Comets. A. What is a Comet?: . It is a small body orbiting the Sun that develops a ______ (a fuzzy atmosphere) and/or a ____ as it approaches the Sun. Comet nuclei range from _____________. __________. . shinning universe . there are billions of stars , millions of meteors, . hundreds of stars. , plenty of planets, many moons , a unique sun and many more celestial bodies. . Chapter 2 Section 2. Describing matter. Matter: anything that has mass and takes up space. Mass – the amount of matter in something. Volume – the amount of space something occupies. Which of the following is matter?. th. , 2018. Pre-Class:. Where do we find asteroids in our solar system?. http://. www.esa.int. Comet 67P/. Churyumov-Gerasimenko. seen from . Rosetta. In This Lesson:. Solar System Debris. (Lesson 2 of 2).