Blackbody Spectrum PhET

In the simulation, adjust the temperature of the blackbody and observe the resulting spectrum. What happens to the peak wavelength of the emitted radiation as the temperature of the blackbody increases?

• A) The peak wavelength shifts to a longer wavelength.

• B) The peak wavelength shifts to a shorter wavelength.

• C) The peak wavelength stays the same.

• D) The peak wavelength disappears.

Tags

NGSS.HS-PS4-1

In the simulation, select the blackbody and adjust the temperature. How does the color of the emitted radiation change as the temperature of the blackbody increases?

• A) It shifts from red to blue.

• B) It shifts from blue to red.

• C) It stays red.

• D) It changes to green.

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-3

In the simulation, adjust the temperature of the blackbody to 3000K and observe the emitted radiation spectrum. At a temperature of 3000K, which part of the electromagnetic spectrum does the majority of the radiation fall in?

• A) Infrared

• B) Visible light

• C) Ultraviolet

• D) Radiowaves

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-3

In the simulation, adjust the temperature to 5000K and observe the emitted spectrum. At a temperature of 5000K, the peak wavelength of emitted radiation is in the visible light range. What color would the radiation appear as?

• A) Red

• B) Green

• C) Blue

• D) White

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-3

In the simulation, experiment with the temperature and observe the emitted spectrum for different blackbodies. How does the wavelength of the emitted radiation change when you decrease the temperature?

• A) The wavelength becomes longer.

• B) The wavelength becomes shorter.

• C) The wavelength stays the same.

• D) The wavelength is not affected by temperature.

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-3

In the simulation, increase the temperature of the blackbody and observe the effect on the total emitted power. What happens to the total emitted power when you double the temperature of the blackbody?

• A) The power is halved.

• B) The power doubles.

• C) The power increases by a factor of four.

• D) The power stays the same.

In the simulation, adjust the temperature and observe the area under the spectrum curve. How does the area under the spectrum curve change when the temperature of the blackbody increases?

• A) The area decreases.

• B) The area stays the same.

• C) The area increases.

• D) The area becomes zero.

Tags

NGSS.HS-PS4-3

In the simulation, observe how the spectrum changes as you change the temperature of the blackbody. What can you infer about the relationship between temperature and the intensity of radiation emitted?

• A) Higher temperatures lead to lower intensity radiation.

• B) Lower temperatures lead to higher intensity radiation.

• C) Higher temperatures lead to higher intensity radiation.

• D) Temperature has no effect on intensity.

Tags

NGSS.HS-PS3-4

Based on your observations in the simulation, explain how the color of a star changes as its temperature increases. What does this tell you about the star's energy output?

Describe the relationship between the temperature of a blackbody and the peak wavelength of emitted radiation. How does this relate to everyday objects, like a stove top or the sun?