Planets — Unit test Answers

Which diagram correctly describes the changes that occur as a small piece of rock falls from space and hits the Earth?

What term generally describes small chunks of rocks and debris in space?

Which type of star will become a black hole when it dies?

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

Why did scientists struggle for thousands of years to accurately describe the solar system?

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

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?

Based on illustrations of magnetic field lines, where could an object be placed so it would not experience a magnetic force?

Which discovery did Galileo make to support the theory that the planets, including Earth, orbit the Sun?

Which list correctly orders the outer planets from least to greatest distance from the Sun?

What is the Milky Way?

Two bar magnets are held close together. When they are released, they move toward one another. Which best describes the original placement of the magnets?

Whose data did Kepler use to construct the laws of planetary motion?

Which term defines a star system with two stars?

Why are there two high tides a day about 12 hours apart from each other?

Oran wants to model the behavior of Earth’s magnetic field when Earth’s magnetic south is near Earth’s geographic north using a ball, a bar magnet, and a compass. He designates the top of the ball as Earth’s geographic north.

What term describes the moon’s path around Earth?

The north pole of a bar magnet is moved close to the north pole of a second bar magnet. What prediction best describes how the first magnet responds when it is released?

In which direction does Earth rotate?

What occurs when Earth’s shadow covers the moon?