it came from asteroids, comets, and you. formation of the solar system
TRANSCRIPT
![Page 1: IT CAME FROM Asteroids, comets, and YOU. Formation of the Solar System](https://reader035.vdocument.in/reader035/viewer/2022062517/56649f265503460f94c3d3fe/html5/thumbnails/1.jpg)
IT CAME FROM
Asteroids, comets, and YOU
![Page 2: IT CAME FROM Asteroids, comets, and YOU. Formation of the Solar System](https://reader035.vdocument.in/reader035/viewer/2022062517/56649f265503460f94c3d3fe/html5/thumbnails/2.jpg)
Formation of the Solar
System
![Page 3: IT CAME FROM Asteroids, comets, and YOU. Formation of the Solar System](https://reader035.vdocument.in/reader035/viewer/2022062517/56649f265503460f94c3d3fe/html5/thumbnails/3.jpg)
Formation of the
Moon
![Page 4: IT CAME FROM Asteroids, comets, and YOU. Formation of the Solar System](https://reader035.vdocument.in/reader035/viewer/2022062517/56649f265503460f94c3d3fe/html5/thumbnails/4.jpg)
Luna
![Page 5: IT CAME FROM Asteroids, comets, and YOU. Formation of the Solar System](https://reader035.vdocument.in/reader035/viewer/2022062517/56649f265503460f94c3d3fe/html5/thumbnails/5.jpg)
The Asteroid Belt is not like
this
![Page 6: IT CAME FROM Asteroids, comets, and YOU. Formation of the Solar System](https://reader035.vdocument.in/reader035/viewer/2022062517/56649f265503460f94c3d3fe/html5/thumbnails/6.jpg)
Chicxulub
65 million years ago
180 km wide
![Page 7: IT CAME FROM Asteroids, comets, and YOU. Formation of the Solar System](https://reader035.vdocument.in/reader035/viewer/2022062517/56649f265503460f94c3d3fe/html5/thumbnails/7.jpg)
Barringer Meteor Crater (Arizona)
49,000 years ago
1.186 km diameter (0.737 miles)
![Page 8: IT CAME FROM Asteroids, comets, and YOU. Formation of the Solar System](https://reader035.vdocument.in/reader035/viewer/2022062517/56649f265503460f94c3d3fe/html5/thumbnails/8.jpg)
Area surrounding the 1908 Tunguska Event, circa 1927
![Page 9: IT CAME FROM Asteroids, comets, and YOU. Formation of the Solar System](https://reader035.vdocument.in/reader035/viewer/2022062517/56649f265503460f94c3d3fe/html5/thumbnails/9.jpg)
Artist’s Conception, just before impact
![Page 10: IT CAME FROM Asteroids, comets, and YOU. Formation of the Solar System](https://reader035.vdocument.in/reader035/viewer/2022062517/56649f265503460f94c3d3fe/html5/thumbnails/10.jpg)
![Page 11: IT CAME FROM Asteroids, comets, and YOU. Formation of the Solar System](https://reader035.vdocument.in/reader035/viewer/2022062517/56649f265503460f94c3d3fe/html5/thumbnails/11.jpg)
When will the next collision occur?
![Page 12: IT CAME FROM Asteroids, comets, and YOU. Formation of the Solar System](https://reader035.vdocument.in/reader035/viewer/2022062517/56649f265503460f94c3d3fe/html5/thumbnails/12.jpg)
Asteroid 99942 Apophis
Size: 300 meters
Probabilty of Collision in 2036: 1 in 45,000
(as of last year)
2029 Orbit-changing encounter
![Page 13: IT CAME FROM Asteroids, comets, and YOU. Formation of the Solar System](https://reader035.vdocument.in/reader035/viewer/2022062517/56649f265503460f94c3d3fe/html5/thumbnails/13.jpg)
Factors important in asteroid collisionsPlanetary
Gravity gplanet =
9.8 m/s
![Page 14: IT CAME FROM Asteroids, comets, and YOU. Formation of the Solar System](https://reader035.vdocument.in/reader035/viewer/2022062517/56649f265503460f94c3d3fe/html5/thumbnails/14.jpg)
Target DensityRocky Crust: ρ = 2700 kg/m3
(Water: ρ = 1000 kg/m3)
![Page 15: IT CAME FROM Asteroids, comets, and YOU. Formation of the Solar System](https://reader035.vdocument.in/reader035/viewer/2022062517/56649f265503460f94c3d3fe/html5/thumbnails/15.jpg)
Impactor DensityDensity: ρ = 3000 kg/m3 maxComet: ρ = 300-700 kg/m3
![Page 16: IT CAME FROM Asteroids, comets, and YOU. Formation of the Solar System](https://reader035.vdocument.in/reader035/viewer/2022062517/56649f265503460f94c3d3fe/html5/thumbnails/16.jpg)
Kinetic EnergyKE = ½mv2
vmeteor = 10 - 40 km/s (assume 30)
Angle of ImpactMost common: 45°
![Page 17: IT CAME FROM Asteroids, comets, and YOU. Formation of the Solar System](https://reader035.vdocument.in/reader035/viewer/2022062517/56649f265503460f94c3d3fe/html5/thumbnails/17.jpg)
Equation for Radius of Impactorfrom De Pater and Lissauer (2001)
Rmeteor
=
0.401 (ρplanet)0.4
2
(Dcrater)1.2
8(vmeteor)0.5
6
(gplanet)0.2
8(ρmeteor)0.4
2
(2700)0.4
2
(9.805)0.
28(3000)0.4
2
(30000)0.
56
2.26×10-3