Earth Science 13th Edition solutions

Earth Science 13
Refer to Figure 21.4 and imagine that Eratosthenes had measured the difference in the angles of the noonday Sun between Syene and Alexandria to be 10 degrees instead of 7 degrees. Consider how this new measurement would have affected his calculation of Earths circumference to answer the following que

Earth Science 13
Use Keplers third law to answer the following questions: a. Determine the period of a planet with a solar distance of 10AU. b. Determine the distance between the Sun and a planet with a period of 5 years. c. Imagine two bodies, one twice as large as the other, orbiting the Sun at the same distance. W

Earth Science 13
Galileo used his telescope to observe the planets and moons in our solar system. These observations allowed him to determine the positions and relative motions of the Sun, Earth, and other objects in the solar system. Refer to Figure 21.16A, which shows an Earth-centered solar system, and Figure 21.1

Earth Science 13
Refer to the accompanying diagram, which shows three asteroids (A, B, and C). They are being pulled by the gravitational force exerted on them by their partner asteroid shown on the left. How will the strength of the gravitational force felt by each asteroid (A, B, and C) compare? (Assume all of thes

Earth Science 13
Refer to the accompanying diagram, which shows two pairs of asteroids, Pair A and Pair B. Is it possible for the asteroids in Pair A to be experiencing the same degree of gravitational force as the asteroids in Pair B? Explain your answer

Earth Science 13
Imagine that Earth rotates on its axis at half its current rate. How much time would be required to capture the photo shown in Figure 21.21?

Earth Science 13
If we were able to reverse the direction of Earths rotation, would the solar day be longer, shorter, or stay the same?

Earth Science 13
Refer to Figure 21.A to complete the following: a. What constellation is located in the sky near the Sun on the day illustrated? b. After Earth has been moving around the Sun for 5 months, which constellation will be near the Sun at noon? c. Which constellation will be high in the sky at midnight? Ex

Earth Science 13
Imagine that today is your birthday. Would you be able to see the stars of your astrological birth sign? Explain your answer.

Earth Science 13
Refer to the accompanying photo to complete the following. a. When you observe the phase of the moon shown, is the moon waxing or waning? b. What time of day can this phase of the moon be observed?

Earth Science 13
Imagine you are looking up at a full moon. At the same time, an astronaut on the Moon is viewing Earth. In what phase will Earth appear to be from the astronauts vantage point? Sketch a diagram to illustrate your answer

Earth Science 13
If the moons orbit were precisely aligned with the plane of Earths orbit, how many eclipses (solar and lunar) would occur in a 6-month period of time? If the moons orbit were tilted 90 degrees with respect to the plane of Earths orbit, how many eclipses (solar and lunar) would occur in a 6-month peri