Horizons: Exploring the Universe (MindTap Course List)
14th Edition
ISBN: 9781305960961
Author: Michael A. Seeds, Dana Backman
Publisher: Cengage Learning
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Chapter 19, Problem 6RQ
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To Explain:
How can you say that most of the meteors are cometary when all meteorites are asteroids?
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Annual meteor showers occur when the Earth passes through the orbital path of acomet. The intensity of these showers vary from year to year. Which of the following may bethe reason for this?
Group of answer choices
- Meteor showers are not caused by comet debris
- Sun's temperature
- en distribution of debris along comet's orbit
- Earth's rotation axis
Calculate the orbital period of a comet nucleus in the Oort cloud.
Why do astronomers think the asteroids were never part of a full-sized planet?
Chapter 19 Solutions
Horizons: Exploring the Universe (MindTap Course List)
Ch. 19 - What do Widmanst?tten patterns indicate about the...Ch. 19 - What do chondrules tell you about the history of...Ch. 19 - Why are there no chondrules in achondritic...Ch. 19 - Why do astronomers refer to carbonaceous...Ch. 19 - Prob. 5RQCh. 19 - Prob. 6RQCh. 19 - Why do astronomers think the asteroids were never...Ch. 19 - Prob. 8RQCh. 19 - What evidence indicates that some asteroids have...Ch. 19 - What evidence indicates that some asteroids have...
Ch. 19 - Prob. 11RQCh. 19 - What is the difference between a gas tail and a...Ch. 19 - Prob. 13RQCh. 19 - What are the hypotheses for how the bodies in the...Ch. 19 - Prob. 15RQCh. 19 - Prob. 1DQCh. 19 - Do you think the government should spend money to...Ch. 19 - Prob. 1PCh. 19 - If a single asteroid 1 km in diameter were to be...Ch. 19 - If a trillion (1012) asteroids, each 1 km in...Ch. 19 - Prob. 4PCh. 19 - What is the maximum angular diameter of the...Ch. 19 - Prob. 6PCh. 19 - Prob. 7PCh. 19 - Prob. 8PCh. 19 - What is the orbital period of a comet nucleus in...Ch. 19 - The mass of an average comet’s nucleus is about...Ch. 19 - Prob. 1LTLCh. 19 - Prob. 2LTLCh. 19 - Prob. 3LTL
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- What is the difference between a meteoroid and an asteroid? Is there a sharp distinction?arrow_forwardWhy are meteorites of primitive material considered more important than other meteorites? Why have most of them been found in Antarctica?arrow_forwardWhy do meteors in a meteor shower appear to come from just one point in the sky?arrow_forward
- Give at least two reasons today’s astronomers are so interested in the discovery of additional Earthapproaching asteroids.arrow_forwardIf a single asteroid 1 km in diameter were to fragment into large meteoroids 1 m in diameter, how many meteoroids would the asteroid yield? Assume the asteroid and meteoroids are spherical. (Note: The volume of a sphere = 43r3.)arrow_forwardWhy do most short-period comets have prograde orbits near the plane of the Solar System?arrow_forward
- What methods do scientists use to distinguish a meteorite from terrestrial material?arrow_forwardDifferentiate between an gas tail and dust tail of a comet.arrow_forwardA crater on the Moon is 28 km in diameter. If a typical meteorite is 11 times smaller than the diameter of the crater, what was the diameter (in km) of the original meteorite? km What is the estimated depth (in km) of the crater if its depth is one-ninth its diameter? kmarrow_forward
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