Question

practice it!
comets and asteroids are both non - planetary objects found in our solar system. how are the two different?
comets are made of rock and usually come from the kuiper belt outside of neptune, while asteroids are made of ice and dust and are found in the belt between mars and jupiter.
comets are made of ice and dust and usually come from the belt between mars and jupiter, while asteroids are made of rock and are found in the kuiper belt outside neptune.
comets are made of rock and usually come from the belt between mars and jupiter, while asteroids are made of ice and dust and are found in the kuiper belt outside neptune.
comets are made of ice and dust and usually come from the kuiper belt outside of neptune, while asteroids are made of rock and are found in the belt between mars and jupiter.

Explanation:

To determine the correct answer, we recall the characteristics of comets and asteroids:

• Comets are composed of ice, dust, and gas, and they typically originate from the Kuiper belt (outside Neptune) or the Oort cloud.
• Asteroids are made of rock and metal and are found in the asteroid belt between Mars and Jupiter.

Now we analyze each option:

• First option: Incorrectly states comets are made of rock and asteroids of ice/dust.
• Second option: Incorrectly places comets in the asteroid belt and asteroids in the Kuiper belt.
• Third option: Incorrectly states comets are made of rock and asteroids of ice/dust, and swaps their locations.
• Fourth option: Correctly states comets are made of ice and dust (and gas, though not mentioned here) and come from the Kuiper belt outside Neptune, while asteroids are made of rock and found in the belt between Mars and Jupiter.

Answer:

D. Comets are made of ice and dust and usually come from the Kuiper belt outside of Neptune, while asteroids are made of rock and are found in the belt between Mars and Jupiter.