Author Question: How do asteroids appear in long exposure images? A) as complex curving and looping lines B) as ... (Read 57 times)

WhattoUnderstand

  • Hero Member
  • *****
  • Posts: 517
How do asteroids appear in long exposure images?
 
  A) as complex curving and looping lines B) as points of light, like the stars
  C) as resolved disks, like the planets D) as straight lines across a background of stars

Question 2

In the Drake equation (Number of Civilizations = NHP  flife  fciv  fnow), we expect the term fciv to be small if ________.
 
  A) most of the civilizations that have ever existed are still out and about in the galaxy
  B) primitive life is common but intelligent life is rare
  C) most habitable planets never actually get life on them
  D) most civilizations destroy themselves within just a few hundred years of arising



Kaytorgator

  • Sr. Member
  • ****
  • Posts: 345
Answer to Question 1

D

Answer to Question 2

B



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

Human neurons are so small that they require a microscope in order to be seen. However, some neurons can be up to 3 feet long, such as those that extend from the spinal cord to the toes.

Did you know?

The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.

Did you know?

There are 60,000 miles of blood vessels in every adult human.

Did you know?

Studies show that systolic blood pressure can be significantly lowered by taking statins. In fact, the higher the patient's baseline blood pressure, the greater the effect of statins on his or her blood pressure.

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.

For a complete list of videos, visit our video library