Comet, Meteor, Asteroid, Meteoroid, Meteorite Using your textbook and internet resources, identify the following objects in the pictures: Comet, Meteor, Asteroid, Meteoroid, Meteorite A. B. E. C. D.
Support your choice with evidence from your research. Object A is __________. I know this because:__________________ Object B is _______________. I know this because:__________________ Object C is __________. I know this because:_____________________ Object D is ____________. I know this because:____________________ Object E is __________________. I know this because:___________________________
What other objects are there in space? Review What other objects are there in space?
As you watch the video, try to identify the objects on your sheet Other Objects in Space As you watch the video, try to identify the objects on your sheet https://www.youtube.com/watch?v=dvd47rMYia0
Object A Asteroid How do you know?
between Mars and Jupiter Asteroid Belt between Mars and Jupiter
Asteroid Belt Have not formed a planet due to the gravitational pull of Jupiter.
Vesta is one of the largest asteroids visited by a spacecraft (330 miles in diameter), it is also considered a proto-planet
Object E Comet How do you know it’s a comet?
Comets Made of dust, rock particles, ice, methane, and ammonia.
Comets come from the Oort Cloud -Located beyond Pluto surrounding the solar system
Life of a Comet
Life of a comet https://www.youtube.com/watch?v=A1yH_DuC88M
Object B Meteoroid How do you know?
Meteoroids As comets vaporize and break up, they leave behind small particles of dust and rocks. These are meteoroids.
Meteoroid Trail/Orbit
Object C Meteor How do you know?
Meteors A meteoroid that enters Earth’s atmosphere (speeds of 15-70 km/s) and burns up is called a meteor. Each time Earth passes through an old comet orbit, a meteor shower occurs.
Object D Meteorite How do you know?
Meteorite If a meteor is too large to burn up completely, it will strike the Earth-now it’s called a meteorite.
Meteorites Crater in Arizona formed 50,000 years ago 100-foot-wide (30-meter-wide) meteor weighing 100,000 tons slammed into the Arizona desert at an estimated 12 miles (20 kilometers) a second. The resulting explosion exceeded the combined force of today's nuclear arsenals and created a 0.7-mile-wide (1.1-kilometer-wide), 650-foot-deep (200-meter-deep) crater.
The two lakes shown here, are the result of some of the largest impact craters still preserved on the surface of the Earth. NASA officials said asteroids currently threatening Earth could devastate an entire region, but not the entire globe. Lake Bosomtwe in Ghana, Africa Lake Manicouagan in Quebec, Canada, http://www.youtube.com/watch?v=41TaVF439-c
Moon Craters
The sky this week http://cms.cinnaminson.com/apps/pages/index.jsp?uREC_ID=867910&type=u
9. Why do I care? Comets, asteroids and meteorites formed early in the history of the solar system. Studying these objects helps scientists learn how the Earth formed and how other Earth-like planets may also form in the Universe. Plus, knowing where these things are might help us avoid being killed by it. http://neo.jpl.nasa.gov/
What is it? Comet Asteroid Meteoroid Meteor Meteorite