Black Body Radiation

Question 1

What is a perfect black body?

Answer 1

An object that absorbs all of the radiation that hits it. No radiation is reflected or transmitted

Question 2

The intensity and distribution of the wavelengths emitted by an object depend on the object’s…

Answer 2

temperature

Question 3

As the temperature increases…

Answer 3

So does the intensity of every emitted wavelength

Question 4

Intensity increases more _______ for shorter wavelengths than long wavelengths

Answer 4

rapidly (causing the peak wavelength (wavelength w/ highest intensity) to decrease)

Question 5

What happens during the day?

Answer 5

Lots of radiation (like light) is transferred to the Earth (from Sun) + absorbed, causing an increase in local temperature

Question 6

What happens during the night?

Answer 6

Less radiation is being absorbed than being emitted, causing a decrease in the local temperature

Question 7

If the atmosphere starts to absorb more radiation without emitting the same amount…

Answer 7

The overall temperature will rise until absorption and emission are equal again (global warming)