« previous next »

Author Question: The sky is blue because molecules in the atmosphere scatter blue light more effectively than red ... (Read 67 times)

Mr. Wonderful

  • Hero Member
  • *****
  • Posts: 866
on: Jul 27, 2018
The sky is blue because molecules in the atmosphere scatter blue light more effectively than red light.
 
  Indicate whether the statement is true or false

Question 2

Briefly explain how Hubble's discovery of a relationship between galactic distance and redshift led to the idea of the Big Bang.
 
  What will be an ideal response?


lolol

  • Sr. Member
  • ****
  • Posts: 330
Reply #1 on: Jul 27, 2018
Answer to Question 1

TRUE

Answer to Question 2

Hubble's discovery showed that the universe is expanding. If the universe is expanding, then it should have been smaller in the past. Extrapolating back, there must have been a time when everything was in one placewhich we call the Big Bang.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.

Did you know?

In 1886, William Bates reported on the discovery of a substance produced by the adrenal gland that turned out to be epinephrine (adrenaline). In 1904, this drug was first artificially synthesized by Friedrich Stolz.

Did you know?

A serious new warning has been established for pregnant women against taking ACE inhibitors during pregnancy. In the study, the risk of major birth defects in children whose mothers took ACE inhibitors during the first trimester was nearly three times higher than in children whose mothers didn't take ACE inhibitors. Physicians can prescribe alternative medications for pregnant women who have symptoms of high blood pressure.

Did you know?

Everyone has one nostril that is larger than the other.

Did you know?

Addicts to opiates often avoid treatment because they are afraid of withdrawal. Though unpleasant, with proper management, withdrawal is rarely fatal and passes relatively quickly.

The formation of micelles by amphipathic molecules The formation of micelles by amphipathic molecules
Internal structures of main sequence stars, convection zones with arrowed cycles and radiative zones Internal structures of main sequence stars, convection zones with arrowed cycles and radiative zones
Organic molecules Organic molecules
Great Blue Lobelia Great Blue Lobelia
Temperature and Pressure in the Venusian Atmosphere Temperature and Pressure in the Venusian Atmosphere
A laser emits a pulse of light that lasts 10 ns. The light has a wavelength of 690 nm, and each ... A laser emits a pulse of light that lasts 10 ns. The light has a wavelength of 690 nm, and each ...
Video: Splitting of Sugar, Oxidation/ Reduction & ATP Generation

For a complete list of videos, visit our video library