« previous next »

Author Question: Why is the Moon heavily cratered but Earth is not? What will be an ideal ... (Read 50 times)

s.tung

  • Hero Member
  • *****
  • Posts: 577
on: Jul 27, 2018
Why is the Moon heavily cratered but Earth is not?
 
  What will be an ideal response?

Question 2

A parsec is about 3.3 light-years.
 
  Indicate whether the statement is true or false


Tabitha_2016

  • Sr. Member
  • ****
  • Posts: 344
Reply #1 on: Jul 27, 2018
Answer to Question 1

The Moon lacks an atmosphere which means it has no weather. It also lacks a molten interior which means it has no plate tectonics. On the Moon the major form of erosion is meteorite bombardment, which is a very slow process. On Earth, wind and rain cause weathering (rapid erosion) of crater features. Plate tectonics is constantly changing the surface of the Earth, creating new crust and recycling old.

Answer to Question 2

TRUE


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Astigmatism is the most common vision problem. It may accompany nearsightedness or farsightedness. It is usually caused by an irregularly shaped cornea, but sometimes it is the result of an irregularly shaped lens. Either type can be corrected by eyeglasses, contact lenses, or refractive surgery.

Did you know?

As of mid-2016, 18.2 million people were receiving advanced retroviral therapy (ART) worldwide. This represents between 43–50% of the 34–39.8 million people living with HIV.

Did you know?

More than 20 million Americans cite use of marijuana within the past 30 days, according to the National Survey on Drug Use and Health (NSDUH). More than 8 million admit to using it almost every day.

Did you know?

Medications that are definitely not safe to take when breastfeeding include radioactive drugs, antimetabolites, some cancer (chemotherapy) agents, bromocriptine, ergotamine, methotrexate, and cyclosporine.

Did you know?

Each year in the United States, there are approximately six million pregnancies. This means that at any one time, about 4% of women in the United States are pregnant.

Planets, Earth and Moon Planets, Earth and Moon
Solar EM Radiation Penetration into Earth's Atmosphere Solar EM Radiation Penetration into Earth's Atmosphere
Earth’s Revolution and Rotation: The Causes of Earth’s Seasons Earth’s Revolution and Rotation: The Causes of Earth’s Seasons
Planet Earth compared to all its water and air! Planet Earth compared to all its water and air!
Orbital Motion of Earth and Other Planets Orbital Motion of Earth and Other Planets
Earth’s Climate System Earth’s Climate System
Video: Mechanism of enzyme action

For a complete list of videos, visit our video library