« previous next »

Author Question: What created Earth's moon? a. The initial big bang expansion event b. The formation of a new star ... (Read 71 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?

Critical care patients are twice as likely to receive the wrong medication. Of these errors, 20% are life-threatening, and 42% require additional life-sustaining treatments.

Did you know?

Fewer than 10% of babies are born on their exact due dates, 50% are born within 1 week of the due date, and 90% are born within 2 weeks of the date.

Did you know?

Vital signs (blood pressure, temperature, pulse rate, respiration rate) should be taken before any drug administration. Patients should be informed not to use tobacco or caffeine at least 30 minutes before their appointment.

Did you know?

The training of an anesthesiologist typically requires four years of college, 4 years of medical school, 1 year of internship, and 3 years of residency.

Did you know?

The top 10 most important tips that will help you grow old gracefully include (1) quit smoking, (2) keep your weight down, (3) take supplements, (4) skip a meal each day or fast 1 day per week, (5) get a pet, (6) get medical help for chronic pain, (7) walk regularly, (8) reduce arguments, (9) put live plants in your living space, and (10) do some weight training.

Formation of phosphodiester bond Formation of phosphodiester bond
Water (Its Volume Expansion Upon Freezing) Water (Its Volume Expansion Upon Freezing)
Earth’s Revolution and Rotation Earth’s Revolution and Rotation
Soil formation "تكوين التربة" Soil formation "تكوين التربة"
Sagittal section through brain and spinal cord showing the reticular formation Sagittal section through brain and spinal cord showing the reticular formation
Formation of a DNA loop allows factors that bind to an enhancer or silencer Formation of a DNA loop allows factors that bind to an enhancer or silencer
Video: Types of antimicrobial substances (interferons & complement protein)

For a complete list of videos, visit our video library