The surface of the earth shows fewer meteor impact craters no messages when compared to the surface of mercury or our own moon, which show thousands of impact craters each? Think of four specific reasons to explain this. For each reason, indicate why is has an effect on the number of craters seen.
2006-08-26 11:11:13 · 11 answers · asked by Betreva P 1 in Science & Mathematics ➔ Other - Science
The answer to this question is errosion (wind, water, rain, etc). The earth is impacted by a proportionate number of meteors as all other planets. However, wind and water errode the impact craters. Consider this, a metor lands in the desert, creating a crater. How long will it be until a sandstorm comes along and erases the crater. Most likely sometime in the next year, so in 12 months you will no longer be able to see the impact crater. Considering that an object like the moon has no wind or rain, basically every impact crater that was formed on the moon is still there. So after thousands or millions of years, there are tons of impact craters visible.
2006-08-26 11:23:52 · answer #1 · answered by anza_1 3 · 0⤊ 0⤋
1. Atmosphere, causes meteors to burn up / reduces mass.
2. Weather - craters are eroded by wind, rain, sand, etc.
3. Geologically acive planet - volcanoes, earthquakes, etc, constantly reshape our surface.
4. Oceans - Earth is mostly covered by oceans, so meteors are more likely to impact in an ocean, leaving no trace.
2006-08-26 20:35:39 · answer #2 · answered by theanswerer 2 · 0⤊ 0⤋
Two main reasons. Our atmosphere causes burn up of debris(meteorites), and our planetary weather causes erosion over millions of years. Our location in the Milky Way, and our orbit around the Sun, may put Earth out of the main meteorite shower areas.
2006-08-26 18:57:26 · answer #3 · answered by Anonymous · 0⤊ 0⤋
increase in atmosphere
increase in technology to divert meteoroid
the temperature at the atmosphere which destroys meteor
the position of Earth in the solar system in accordance to the different orbits of the meteors and asteroids.
2006-08-26 18:21:34 · answer #4 · answered by Man 5 · 0⤊ 0⤋
Ya know, it's ok to say that this is a homework question instead of trying to lure people in who think they are smart. I'm sure the answer is right in your textbook, anyway.
2006-08-26 18:21:26 · answer #5 · answered by kris 6 · 0⤊ 0⤋
this is a dynamic world 1 plate tectonics ( buried by earth movements) 2 Weather (erosion) WAIT IT'S YOUR HOMEWORK do the next two yourself kid
2006-08-26 18:17:49 · answer #6 · answered by Anonymous · 0⤊ 0⤋
atmosephere, erosion, earth being volcanically active,
2006-08-26 19:19:59 · answer #7 · answered by Anonymous · 0⤊ 0⤋
things tend to burn up in the atmosphere.
2006-08-26 18:17:47 · answer #8 · answered by justnotright 4 · 0⤊ 0⤋
the primary reason is atmosphere.
2006-08-26 18:17:44 · answer #9 · answered by thrag 4 · 0⤊ 0⤋
the atomsphere protects us, the moon also protect us
2006-08-26 18:47:56 · answer #10 · answered by shotgunsherriffs 3 · 0⤊ 0⤋