• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

Physics - Meteorite Craters Research

Extracts from this document...

Introduction

Research – Impact Craters

The Meaning of Asteroid and Meteorite

Asteroids are rocky or metallic objects mainly found orbiting the Sun in a region called the asteroid belt between Mars and Jupiter. Some are large - the biggest is Ceres with a diameter of nearly 600 miles (950km) - and are sometimes called minor planets or planetoids. There are millions of small asteroids. It is thought that asteroids are material leftover from the time that the planets formed. (From source 1)

An asteroid is a rocky object in space that's smaller than a planet — they're sometimes called minor planets or planetoids, according to NASA. Other sources refer to them loosely as "space debris," or leftover fragments from the formation of the solar system. Asteroids have no atmosphere, but many are large enough to exert a gravitational pull — some have one or two companion moons, or they form binary systems, which is two similarly sized asteroids orbit each other.image00.jpg

Meteorites are usually categorized as iron or stony, iron meteorites are composed of about 90% iron. Stony meteorites are made up of oxygen, iron, silicon, magnesium and other elements. (From source 2)

Some meteoroids survive passage through Earth's atmosphere and hit the ground. These are called meteorites. (From source 3)

How Impact Craters are Formed

...read more.

Middle

3. Modification Stage: During this stage, loose debris from the impact will tend to slide down the steep crater walls. Some loosened material may slip in sheets, forming terraces along the crater sides. In some craters, a central peak may form as some of the target material splashes back upwards at the initial point of impact. This stage lasts about the same amount of time as the excavation stage, although of course the crater can be further modified by erosion, later impacts, lava flows or tectonic activity for millions of years afterwards depending upon conditions on the target. For Deep Impact, this stage is not very important, since the low gravity on the comet will probably only cause some small amount of collapse near the rim. There will not be the uplift that can be seen in larger craters, so there will be no central peak. (From source 4)

The Barringer Crater

50,000 years ago, a giant fireball streaked across the North American sky.  At its core was a meteorite – a chunk of nickel iron about 150 feet (50 meters) wide.The meteorite weighed 300,000 tons and travelled at a speed of 26,000 miles per hour (12 kilometers per second). image01.jpg

The crater measured three-quarters of a mile (about 1 kilometer) wide and 750 feet deep.

...read more.

Conclusion

(From source 8)

The greater something’s mass and the faster it’s going, the bigger its kinetic energy will be. The kinetic energy of something depends on both its mass and its speed. When something falls, its gravitational potential energy is converted into kinetic energy, so the further it falls, the faster it goes. But when a falling object reaches terminal speed it can’t go any faster so its kinetic energy doesn’t increase. Instead, the gravitational potential energy is transferred to internal energy of the object or it’s not used heating up the air particles through friction – so it’s turned into thermal energy. (From source 9)

A video of a meteoroid hitting Russia:http://www.youtube.com/watch?v=R95Pe5FTYbo. From this video I can tell that heat energy and light energy is produced.

Bibliography

  1. http://www.bbc.co.uk/science/space/solarsystem/other_solar_system_bodies/asteroid
  2. http://www.livescience.com/27183-asteroid-meteorite-meteor-meteoroid.html
  3. http://www.jpl.nasa.gov/asteroidwatch/asteroids-comets.cfm
  4. https://solarsystem.nasa.gov/deepimpact/science/cratering.cfm
  5. http://www.barringercrater.com/about/history_1.php
  6. http://www.lpi.usra.edu/education/explore/shaping_the_planets/impact_cratering.shtml
  7. http://www.education.com/science-fair/article/factors-that-affect-crater-formation/
  8. http://palaeo.gly.bris.ac.uk/communication/brana/impact.html
  9. GCSE Physics: Exam Board: OCR Gateway: The Revision Guide Higher Level
  10. http://www.youtube.com/watch?v=R95Pe5FTYbo
  11. http://www.isb.ac.th/hs/JoP/vol1/Papers/Craters.pdf

image02.png

...read more.

This student written piece of work is one of many that can be found in our GCSE The Earth and Beyond section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related GCSE The Earth and Beyond essays

  1. Marked by a teacher

    My project this year is based on the solar system. In my project I ...

    4 star(s)

    I saw the comet Hale-Bopp in July-August last year. We'll have to wait another 5000 years to see it again. Meteors Meteors may be no bigger than grains of sand or may weigh up to several grams. They come into the Earth's atmosphere from outer space moving very fast, and the friction of air makes them so hot that

  2. Free essay

    Physics Research and Report - What is Antimatter?

    3 star(s)

    Also if the Antimatter is not handled correctly there could be devastation, causing millions of pounds worth of damage. Storing Antimatter Antimatter is stored in a vacuum, because it will react with air, and also with electromagnetic fields to keep it from coming into contact with matter.

  1. Physics crater investigation

    The ruler has increments of millimetres; this is useful because I expect craters to be small enough to measure in millimetres. However, if I could I would like to use a ruler with an even smaller scale, maybe with tenths of millimetres on as this would allow me to be

  2. When one begins to study satellites he or she is bound to find out ...

    GPS satellites send data to Earth every thirty seconds on its location, velocity, and when it was transmitted. This information can be used to figure out how much time the signal took to get to your receiver from the satellite.

  1. Should We Persue Manned Space Flights?

    And finally, the fifth hazard is temperature extremes. In space, the difference between sun and shade can be hundreds of degrees Fahrenheit! The space suit must be able to keep the astronaut cool when they are in the sun, and warm when they are in the shade. How does a space suit work?

  2. Conduct a research study looking at the detailed history of the stars.

    As well as this, I have researched textbooks, CD-ROMs, carried out a number of Internet searches and watched various different astronomy related programmes on television and videos. Further to this, I will continue researching throughout the duration of my work.

  1. Sustaining life on Mars - the survival of the human race.

    The setback to this method is the amount of radiation produced by the asteroid's impacts would be equivalent to that of 70,000 megatons worth of hydrogen bombs being dropped. This would make human settlement impossible for hundreds of years because the radiation takes many years to dissipate.

  2. GCSE Astronomy Revision Notes

    Belts of warm dust similar to the one that the Moon could have formed from are found around other stars. ________________ TOPIC 1.3 THE SUN 1. Describe the use of a Sunspotter. * Point the gnomon in the direction of the sun until its shadow disappears.

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work