This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: The circular shape of the Earth's shadow on the Moon during a lunar eclipse suggested to the Greeks ... (Read 46 times)

lunatika

  • Hero Member
  • *****
  • Posts: 548
on: Jul 27, 2018
The circular shape of the Earth's shadow on the Moon during a lunar eclipse suggested to the Greeks that the Earth was
 
  A) cylindrical in shape
  B) at the center of the Universe
  C) flat
  D) spherical in shape

Question 2

Process of Science: Explain how we can use telescopes as time machines to directly test theories of galaxy formation.
 
  What will be an ideal response?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

nikmaaacs

  • Sr. Member
  • ****
  • Posts: 335
Reply #1 on: Jul 27, 2018
Answer to Question 1

D

Answer to Question 2

Telescopes see objects as they were when the light left them. For distant objects, this lookback time can be billions of years and we can literally see galaxies in the process of formation. In this way, we can directly test theories for how they form.


lunatika

  • Member
  • Posts: 548
Reply 2 on: Jul 27, 2018
Thanks for the timely response, appreciate it

6ana001

  • Member
  • Posts: 311
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

Normal urine is sterile. It contains fluids, salts, and waste products. It is free of bacteria, viruses, and fungi.

Did you know?

Everyone has one nostril that is larger than the other.

Did you know?

The highest suicide rate in the United States is among people ages 65 years and older. Almost 15% of people in this age group commit suicide every year.

Did you know?

Although not all of the following muscle groups are commonly used, intramuscular injections may be given into the abdominals, biceps, calves, deltoids, gluteals, laterals, pectorals, quadriceps, trapezoids, and triceps.

Did you know?

Over time, chronic hepatitis B virus and hepatitis C virus infections can progress to advanced liver disease, liver failure, and hepatocellular carcinoma. Unlike other forms, more than 80% of hepatitis C infections become chronic and lead to liver disease. When combined with hepatitis B, hepatitis C now accounts for 75% percent of all cases of liver disease around the world. Liver failure caused by hepatitis C is now leading cause of liver transplants in the United States.

The Moon During the Day The Moon During the Day
How Orbital Eccentricity Changes the Amount of Solar Radiation Earth Receives How Orbital Eccentricity Changes the Amount of Solar Radiation Earth Receives
The Pyramid of the Moon, looking north up the Avenue of the Dead. The Pyramid of the Moon, looking north up the Avenue of the Dead.
Earth’s Lithospheric Plates Earth’s Lithospheric Plates
When viewed from the Earth, Venus subtends an angle of about 1 arcminute (1/60°) when it is at ... When viewed from the Earth, Venus subtends an angle of about 1 arcminute (1/60°) when it is at ...
Spacecraft optimum geometrical shape Spacecraft optimum geometrical shape
Video: DNA Replication Factory and Protein

For a complete list of videos, visit our video library