Summarize in your own words, the three hallmarks of science? ...

[haleyc112]

Summarize in your own words, the three hallmarks of science?
 
  What will be an ideal response?

Question 2

Dr. X believes that the Hubble constant is H0 = 55 km/s/Mpc. Dr. Y believes it is H0 = 80 km/s/Mpc. Which statement below automatically follows?
 
  A) Dr. X believes that the universe is expanding, but Dr. Y does not.
  B) Dr. X believes that the Andromeda Galaxy (a member of our Local Group) is moving away from us at a slower speed than Dr. Y believes.
  C) Dr. X believes that the universe is older than Dr. Y believes.
  D) Dr. X believes that the universe will someday stop expanding, while Dr. Y believes it will expand forever.
  E) Dr. X believes that the universe has a much higher density than Dr. Y believes.

[tjayeee]

Answer to Question 1

See Figure 3.24 in the textbook. As an example:
1. The quest to explain an observation by building on our knowledge of other aspects of nature
2. The creation and testing of models that explain observations as simply as possible
3. Models make testable predictions and are modified or abandoned if the predictions do not agree with observations

Answer to Question 2

C

[haleyc112]

Thank you!

[tjayeee]

Always glad to help...