Absorbing Radiation (Infrared & Black Body)

This lesson covers:

  1. How absorbing and emitting radiation can alter an object's temperature
  2. Which factors determine the type of radiation emitted

Objects that are hotter than their surroundings emit ________ radiation than they absorb.

less

more

0

/

1

intensity / amplitude / charge


is a measure of the power of the radiation, per unit area.

Intensity

0

/

1

An object at room temperature emits mostly:

Infrared radiation

Microwave radiation

Ultraviolet radiation

Visible light radiation

0

/

1

Illustration showing rocks heating up and emitting radiation as temperature increases.

As the temperature of an object increases, the intensity of the radiation emitted by the object ________.

decreases

increases

0

/

1

increases / decreases


As the temperature of an object increases, the wavelength of radiation emitted by the object .

decreases

0

/

1

Illustration of the Earth at night emitting infrared radiation into space.

At night time:

(Select all that apply)

The land absorbs more energy than it emits

The land absorbs less energy than it emits

The lands local temperature increases

The lands local temperature decreases

0

/

2