« previous next »

Author Question: What created Earth's moon? a. The initial big bang expansion event b. The formation of a new star ... (Read 61 times)

Yolanda

  • Hero Member
  • *****
  • Posts: 757
on: Aug 22, 2018

What created Earth's moon?
  a. The initial big bang expansion event
  b. The formation of a new star
  c. Ejection of rocky mantle material from Earth after a collision with a smaller planet
  d. The collision of two older moons
  e. Ejection of rocky mantle material following an explosive volcanic event on Earth



Question 2

How long ago did the big bang catalyze the beginning of the universe?
  a. 13.7 billion years ago
  b. 1.37 billion years ago
  c. 4 billion years ago
  d. 40 million years ago
  e. 5 million years ago
 
 



qytan

  • Sr. Member
  • ****
  • Posts: 336
Reply #1 on: Aug 22, 2018
Answer to Question 1

c

Answer to Question 2

ANSWER: a


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

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?

Certain topical medications such as clotrimazole and betamethasone are not approved for use in children younger than 12 years of age. They must be used very cautiously, as directed by a doctor, to treat any child. Children have a much greater response to topical steroid medications.

Did you know?

Your skin wrinkles if you stay in the bathtub a long time because the outermost layer of skin (which consists of dead keratin) swells when it absorbs water. It is tightly attached to the skin below it, so it compensates for the increased area by wrinkling. This happens to the hands and feet because they have the thickest layer of dead keratin cells.

Did you know?

Adult head lice are gray, about ? inch long, and often have a tiny dot on their backs. A female can lay between 50 and 150 eggs within the several weeks that she is alive. They feed on human blood.

Did you know?

Malaria was not eliminated in the United States until 1951. The term eliminated means that no new cases arise in a country for 3 years.

Formation of a disaccharide Formation of a disaccharide
Platelets and the process of blood clot formation. Platelets and the process of blood clot formation.
Our Moon Our Moon
Enceladus (Saturn's Moon) Enceladus (Saturn's Moon)
Expansion Ratios for Liquefied Compressed Gases Expansion Ratios for Liquefied Compressed Gases
Moon Moon
Video: Embryonic development - Week 3

For a complete list of videos, visit our video library