Other Objects in the Solar System — Unit test Answers

If astronomers discovered a new inner planet in the solar system, which characteristic would it most likely have?

About how old is the Sun?

Scientists believe that some mass extinction events are possibly caused by asteroids, volcanic activity, or climate change. How many mass extinctions have occurred on Earth in the last 4.6 billion years?

What was discovered in 1965 and is believed to be leftover thermal energy from the big bang?

Lori attended a lecture about the Sun, and the presenter had placed this image on the wall. Which layer of the Sun could this image be referring to?

Which term defines a star system with two stars?

What term specifically describes small chunks of rocks and debris in space that burn up in Earth’s atmosphere?

The sudden eruptions of energy from a small area of the Sun’s surface are known as

What is the correct order of star colors from hottest to coolest?

Which is the final event that occurs when a star is forming?