Minor Bodies(Asterods, Meroid, and Comets) Comets)

1. 1. What causes a comet's tail to form?
   

• 1. 
     
     A. Solar radiation and solar wind
     
     

• 1. B. Magnetic fields of the sun

• 1. C. Gravitational pull from planets

• 1. D. Earth's atmosphere

1. 2. What is the coma of a comet?
   
   
   
   
   

• 1. A. Its rocky core

• 1. B. The gas and dust atmosphere around its nucleus

• 1. C. Its orbit

• 1. D. A type of comet

1. 3. Which of the following best describes the orbit of a comet?
   

• 1. A. Circular

• 1. B. Perfectly spherical

• 1. 
     
     C. Ellipsoidal
     
     

• 1. D. Spiral

1. 4. Which type of comet has an orbital period of less than 20 years?
   
   

• 1. A. Halley Family

• 1. B. Kuiper Belt Comets

• 1. C. Oort Cloud Comets

• 1. 
     
     D. Jupiter Family
     

1. 5. Which component of the solar system contains the majority of known asteroids?
   

• 1. A. Kuiper Belt
     
     

• 1. B. Asteroid Belt
     

• 1. C. Oort Cloud
     

• 1. D. Mars’ Orbit

1. 6. What are Trojan asteroids?
   
   
   
   

• 1. A. Asteroids that orbit in the Kuiper belt

• 1. B. Asteroids that orbit close to the Earth

• 1. C. Asteroids that share an orbit with a planet
     

• 1. D. Asteroids that come from meteoroids

1. 7. What is a meteorite?
   

• 1. 
     
     A. A meteoroid that survives its passage through Earth's atmosphere
     
     

• 1. B. A shooting star

• 1. C. A comet’s tail

• 1. D. A small asteroid in space

1. 8. What is a primary difference between asteroids and comets?
   

• 1. A. Only comets orbit the sun

• 1. 
     
     B. Comets have atmospheres and tails; asteroids do not
     
     

• 1. A. Only comets orbit the sun

• 1. D. Comets are metallic; asteroids are icy

1. 9. Where do meteors most often burn up in Earth's atmosphere?
   

• 1. 
     
     A. Mesosphere
     
     

• 1. B. Stratosphere

• 1. C. Troposphere

• 1. D. Thermosphere

1. 10. Which of the following is TRUE about Near-Earth Asteroids?
   
   
   
   
   

• 1. A. They orbit outside the solar system

• 1. B. They pass close to Earth in their orbits

• 1. C. They never enter Earth's atmosphere

• 1. D. They are all part of the Kuiper belt