bartleby
search
close search
Textbooks
arrow_drop_down
Hit Return to see all results
close solutoin list

Chapter 1, Problem 1RQ

BuyFindarrow_forward

Essentials of Geology (Fifth Editi...

5th Edition
Stephen Marshak
ISBN: 9780393263398

Solutions

Chapter
Section
BuyFindarrow_forward

Essentials of Geology (Fifth Editi...

5th Edition
Stephen Marshak
ISBN: 9780393263398
To determine
Difference between geocentric and heliocentric universe concepts.

Answer

  • The geocentric theory states that the Earth is at the centre of the universe and all the planets, the moon and stars are revolving around the earth in a circular path.
  • The heliocentric theory states that the sun is at the centre of the solar system and all the planets orbit around the sun. The moon revolves around the Earth. All the starts are static. The movement of the planets is elliptical in shape.
Explanation

Ptolemy assumed that all the planets revolved around the Earth in a circular path, including the moon. Also, each planet moves in a small circle which is called as an epicycle. The Earth is at the center of all the planets, the sun and the moon. All these bodies are surrounded by a ring of infinite stars which also revolve around the Earth.

Copernicus observed that all the planets have the same annual movement, except the sun. Thus, he hypothesized the sun standing at the centre. Also, this idea is strengthened by the characteristics of the sun (emission of heat and light). The stars are distant and are motionless. But, as the earth rotates on its own axis, it appears that stars are moving. He proposed that the planets while making a number of circular movements, gradually created a non-circular path.

Concept:

The geocentric theory and heliocentric theory explain the relative movement of stars and planets with respect to the Earth, the sun and the moon.

The geocentric theory states that the Earth being is the centre of universe, and the sun and the planets orbit around the Earth. The whole set that is the Earth along with the sun and the planets, exists within the revolving globe of the stars. This theory was proposed by Ptolemy.

The heliocentric theory states that the sun is at the centre of the solar system that the planets and stars are orbiting around. This was proposed by Nicholas Copernicus.

Give your grades a boost

Find quality solutions to thousands of textbooks. All for just $9.99/month

Get As ASAP

Additional Earth Science Solutions

Find more solutions based on key concepts

Show solutions add

Sorry about that. What wasn’t helpful?

Find all the answers to your study problems with bartleby.
Textbook solutions plus Q&A. Get As ASAP arrow_forward

Ask a Question

Ask our subject matter experts your homework question and you'll be notified when it's answered.infoQuestions are typically answered within just a few hours. If your question isn't answered within 48 hours we'll credit your question back.

Question Asking Tips
- Ask one academic question at a time
- Keep questions specific and include all details
- Contact Support for textbook, writing, or account help

0 / 5,000

Like you, we deeply value honesty and integrity.
Learn about our honor code arrow_forward