Exam 1: A Modern View of the Universe

Process of Science: Think about some ways in which we might figure out how old things are that last for much longer than a human lifetime.What about for things that last longer than humans have existed?

On a cosmic calendar,in which the history of the universe is compressed into 1 year,when did Kepler and Galileo first discover that we live on a planet in a solar system?

Which scientists played a major role in overturning the ancient idea of an Earth-centered universe,and about when?

How long does it take the Earth to complete one orbit around the Sun?

Briefly explain why an expanding universe implies a beginning (called a Big Bang).

Which of the following correctly lists speeds from slowest to fastest?

All galaxies beyond those local to the Milky Way appear to be receding from us.

Which of the following has your "cosmic address" in the correct order?

Which of the following is largest?

Consider the following statement,and explain whether or not it is sensible: The universe is between 10 and 16 billion light-years old.

Approximately how fast are you moving with the rotation of Earth?

Which of the following statements about the Milky Way Galaxy is not true?

Suppose we imagine the Sun to be about the size of a grapefruit.How far away are the nearest stars (the three stars of Alpha Centauri)?

If we imagine the history of the universe compressed into one year,dinosaurs became extinct

Which statement about motion in the universe is not true?

Based on observations of the universal expansion,the age of the universe is about

What is nuclear fusion?

On a scale in which the distance from Earth to the Sun is about 15 meters,the distance from Earth to the Moon is

Our solar system is located in the center of the Milky Way Galaxy.

How are galaxies important to our existence?