Blackbody

In the simulation, as you go from low temperature objects (like the Earth) to high temperature objects (like the star Sirius A), what happens to the color produced?

• It transitions from not emitting light, to emitting red light, then yellow, green, and lastly violet / blue.

• It transitions from emitting blue light (the Earth), to emitting red light, then yellow, and lastly violet / blue.

• Objects go from being blue to green to red as they heat up.

Tags

NGSS.HS-PS4-1

A perfect ___ is a theoretical object that absorbs 100% of the radiation that falls on it.

• black hole

• thermal radiation absorber

• molecular sphere

• blackbody

Tags

NGSS.HS-PS4-3

law states that the hotter an object is the "bluer" (shorter wavelengths) its radiation.

• Wien's

• Stefan's

• Plank's

• Newton's

Tags

NGSS.HS-PS4-1

Which statement best describes Stefan's law?

• as temp. decreases the energy emitted by an object increases

• there can never be a 100% perfect blackbody object

• as temp. increases the energy emitted by an object increases

• as temp. increases the energy emitted by an object decreases

which of these blackbody radiation curves is peaking in the UV part of the spectrum?

• a

• b

• c

Tags

NGSS.HS-PS4-1

which of these blackbody radiation curves is created by the object with the highest energy?

• a

• b

• c

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-3

which of these blackbody radiation curves is created by the object with the longest wavelength light?

• a

• b

• c

Tags

NGSS.HS-PS4-1

which of these blackbody radiation curves is peaking in the visible part of the spectrum?

• a

• b

• c

Tags

NGSS.HS-PS4-3

which of these blackbody radiation curves is the most similar to the energy that the Sun produces?

• a

• b

• c

Tags

NGSS.HS-PS4-1

Which of the following best describes a blackbody?

• An object that reflects all incident light

• An object that absorbs all incident light and re-emits it perfectly

• An object that emits light only at specific wavelengths

• An object that does not emit any radiation

Tags

NGSS.HS-PS4-3

NGSS.HS-PS4-5