Author Question: How long does it take for energy generated near the core of the sun by fusion to reach the ... (Read 60 times)

xroflmao · **on:** Jul 14, 2018

How long does it take for energy generated near the core of the sun by fusion to reach the Earth-atmosphere system as solar radiation?

A) immediately
B) 8 minutes
C) 1 century
D) 1 million years

Question 2

Describe how Wien's law has been applied to the understanding of satellite images that you see on television weather broadcasts.

What will be an ideal response?

Rilsmarie951 · **Reply #1 on:** Jul 14, 2018

Answer to Question 1

Answer: D

Answer to Question 2

Answer: The color enhanced satellite images depict the height of cloud tops, which can be used as an indicator of the intensity of precipitation. The images are obtained by measuring the intensity of IR radiation emitted by the cloud tops. Colder surfaces radiate less energy than do warmer objects. Higher clouds tend to be colder than lower level clouds because the temperature in the troposphere decreases with height. The colder cloud tops imply thicker clouds and therefore identify areas with significant weather.