EAPS 106 Unit 8 Asteroid Impacts Lecture
Questions And Correct Answers
\Q\.What do most asteroids look like? - ANSWERS✔-Irregularly shaped with smooth surfaces
\Q\.What is regolith? - ANSWERS✔-A layer of dust and small particles that rain down on their
surface after impacts.
\Q\.What is unusual about asteroid Bennu compared to larger asteroids? - ANSWERS✔-It has no
regolith.
\Q\.Where do the Trojan asteroids orbit? - ANSWERS✔-Within Jupiter's orbit.
\Q\.**There are an estimated 1 million asteroids 1 km or greater. How far is the average
distance between them? - ANSWERS✔-500,000 km
\Q\.**The density of a comet is closest to which material? - ANSWERS✔-Oatmeal (600kg/m^3)
\Q\.Why is do comets have an average density less than that of ice? - ANSWERS✔-Because they
have a significant amount of empty space in their interiors.
\Q\.Why do comets readily come apart before impact? - ANSWERS✔-Because they are a loose
collection of rocks (a rubble pile).
Questions And Correct Answers
\Q\.What do most asteroids look like? - ANSWERS✔-Irregularly shaped with smooth surfaces
\Q\.What is regolith? - ANSWERS✔-A layer of dust and small particles that rain down on their
surface after impacts.
\Q\.What is unusual about asteroid Bennu compared to larger asteroids? - ANSWERS✔-It has no
regolith.
\Q\.Where do the Trojan asteroids orbit? - ANSWERS✔-Within Jupiter's orbit.
\Q\.**There are an estimated 1 million asteroids 1 km or greater. How far is the average
distance between them? - ANSWERS✔-500,000 km
\Q\.**The density of a comet is closest to which material? - ANSWERS✔-Oatmeal (600kg/m^3)
\Q\.Why is do comets have an average density less than that of ice? - ANSWERS✔-Because they
have a significant amount of empty space in their interiors.
\Q\.Why do comets readily come apart before impact? - ANSWERS✔-Because they are a loose
collection of rocks (a rubble pile).
