/*! This file is auto-generated */ .wp-block-button__link{color:#fff;background-color:#32373c;border-radius:9999px;box-shadow:none;text-decoration:none;padding:calc(.667em + 2px) calc(1.333em + 2px);font-size:1.125em}.wp-block-file__button{background:#32373c;color:#fff;text-decoration:none} Problem 22 On the vernal and autumnal equin... [FREE SOLUTION] | 91影视

91影视

Log out

Learning Materials

Features

Discover

Chapter 2: Problem 22

On the vernal and autumnal equinoxes, a. every place on Earth has 12 hours of daylight and 12 hours of darkness. b. the Sun rises due east and sets due west. c. the Sun is located on the celestial equator. d. all of the above e. none of the above

Short Answer

Expert verified
d. all of the above

Step by step solution

01

- Analyze the Statement

Review each given statement to determine if it is true for the vernal and autumnal equinoxes.
02

- Evaluate Statement a

Statement a says every place on Earth has 12 hours of daylight and 12 hours of darkness. This is true during the equinoxes.
03

- Evaluate Statement b

Statement b says the Sun rises due east and sets due west. This is also true during the equinoxes.
04

- Evaluate Statement c

Statement c says the Sun is located on the celestial equator. This is true because, during the equinoxes, the Sun crosses the celestial equator.
05

- Conclusion

Since all preceding statements (a, b, and c) are correct, the correct answer is d. all of the above.

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Over 30 million students worldwide already upgrade their learning with 91影视!

Key Concepts

These are the key concepts you need to understand to accurately answer the question.

vernal equinox
The vernal equinox, also known as the spring equinox, marks the beginning of spring in the Northern Hemisphere. This occurs around March 20th or 21st each year. During the vernal equinox, the Sun crosses the celestial equator moving northwards. This is a moment of perfect balance, where daylight and darkness are nearly equal all over the world, typically around 12 hours each. It鈥檚 a significant day in many cultures, symbolizing new beginnings and the end of winter.
autumnal equinox
The autumnal equinox, occurring around September 22nd or 23rd, marks the beginning of autumn in the Northern Hemisphere. Similar to the vernal equinox, the Sun crosses the celestial equator, but this time it moves southwards. On this day, there is nearly equal distribution of daylight and darkness, with around 12 hours of daylight and 12 hours of night. This equinox is significant for various cultures that celebrate it as a time of harvest and preparation for the coming winter.
celestial equator
The celestial equator is an imaginary circle created by extending Earth's equator into space. It divides the sky into the Northern and Southern Hemispheres. During both the vernal and autumnal equinoxes, the Sun appears to cross the celestial equator. This positioning results in nearly equal day and night durations across the globe. Observing the Sun on these days, it will rise exactly in the east and set precisely in the west. The concept of the celestial equator is essential in astronomy for understanding the movement of constellations and celestial objects.
daylight and darkness distribution
Daylight and darkness distribution refers to the length of day and night experienced at different times of the year. On the equinoxes, this distribution is balanced, offering about 12 hours of daylight and 12 hours of darkness everywhere on Earth. The reason for this equal distribution is the Sun鈥檚 direct alignment with the celestial equator, minimizing the angle at which sunlight hits the Earth. As we move away from the equinoxes, the distribution becomes uneven, leading to longer days and shorter nights during summer, and shorter days and longer nights during winter. Understanding this distribution helps in appreciating the natural cycles of day and night.

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

On the summer solstice in July, the Sun will be directly above ___ and all locations north of __ will experience daylight all day. a. The Tropic of Cancer; the Antarctic Circle b. The Tropic of Capricorn; the Arctic Circle c. The Tropic of Cancer; the Arctic Circle d. The Tropic of Capricorn; the Antarctic Circle

Suppose the tilt of Earth's equator relative to its orbit were \(10^{\circ}\) instead of \(23.5^{\circ} .\) At what latitudes would the Arctic and Antarctic circles and the Tropics of Cancer and Capricorn be located?

The tilt of Earth's axis causes the seasons because a. one hemisphere of Earth is closer to the Sun in summer. b. the days are longer in summer. c. the rays of light strike the ground more directly in summer. d. both a and b e. both b and c

Go to the "Earth and Moon Viewer" website (http://four milab.ch/earthview). Under "Viewing the Earth," click on "latitude, longitude and altitude" and enter your approximate latitude and longitude, and 40,000 for altitude; then select "View Earth." Are you in daytime or nighttime? Now play with the locations; keep the same latitude but change to the opposite hemisphere (Northern or Southern). Is it still night or day? Go back to your latitude, and this time enter \(180^{\circ}\) minus your longitude, and change from west to east, or from east to west, so that you are looking at the opposite side of Earth. Is it night or day there? What do you see at the North Pole (latitude \(90^{\circ}\) north) and the South Pole (latitude \(\left.90^{\circ} \text { south }\right) ?\) At the bottom of your screen you can play with the time. Move back 12 hours. What do you observe at your location and at the poles?

Go to the U.S. Naval Observatory website (USNO "Data Services," at http://aa.usno.navy.mil/data). Look up the times for sunrise and sunset for your location for the current week. (You can change the dates one at a time, or bring up a table for the entire month.) How are the times changing from one day to the next? Are the days getting longer or shorter? Bring up the "Duration of Days/Darkness Table for One Year" page for your location. When do the shortest and the longest days occur? Look up a location in the opposite hemisphere (Northern or Southern). When are the days shortest and longest?
See all solutions

Recommended explanations on Physics Textbooks

Atoms and Radioactivity

Read Explanation

Electrostatics

Read Explanation

Space Physics

Read Explanation

Magnetism and Electromagnetic Induction

Read Explanation

Turning Points in Physics

Read Explanation

Force

Read Explanation
View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.