For Essentials of Geology, 7e, this question is based on Chapter 1 's Practice What You Know Question 2 in Concept A: Cosmology addresses questions concerning the origin and structure of the Universe. 1st attempt Part 1 (1 point) Which of the following best describes the geocentric model of the Universe? Choose one: A. The Earth is the center of the Universe, and the stars and planets rotate around it: B. The Sun lies in the center of the Milky Way while stars and planets orbit around it. C. The Earth orbits the sun, and all other planets orbit the Earth. D. The Sun is the center of the Universe, and the planets orbit around it. Part 2 (1 point) Which of the following best describes the helioentric model of the Universe? Choose one: A. The Earth is the center of the Universe, and the stars and planets rotate around it. B. The Sun is the center of the Solar System, and the planets orbit around it. C. The Earth orbits the Sun, and all other planets orbit the Earth. D. The Sun is the center of the Universe, and the planets and stars orbit around it.
In the image below, tracks of stars can be seen in the northern hemisphere. Why do they form a circular pattern? Choose one: A. because the Earth's axis points toward Polaris, directly above Earth B. because the stars are orbiting around Earth's moon C. because they are orbiting the Sun D. because they are orbiting Earth Part 2 (1 point) Which way would you be walking if you walked toward this circular pattern? Choose one: A. north B. east C. south D. west
What is the approximate distance from Earth to the Sun? Choose one: A. 1 light-year B. 8 solar minutes C. \( 150,000,000 \) kilometers D. \( 100,000,000 \) miles Part 2 (1 point) The International Space Station travels at \( 25,000 \mathrm{~km} / \mathrm{hr} \). How long would it take an object traveling that speed to go from Earth to the Sun? Choose one: A. sixmonths B. 72 hours C. one week D. 250 days Part 3 (1 point) Why do astronomers use light-years to define distances between stars? Choose one: A. It is a convenient way to measure vast distances. B. Because the distance between Earth and the Sun is exactly one light-year. C. Because ancient Egyptians used light-years to describe the locations of the stars: D. It makes calculations easier.