Blackbody

Choose the correct statement of an ideal blackbody

• Emits 100% of the light it generates, but cannot absorb its own radiation

• Absorbs half of the light incident upon it and emits half of the radiation it generates

• Absorbs all light incident on it, or emits all of the radiation it generates

• Absorbs 100% of the light incident upon it, but cannot emit light of its own

Tags

NGSS.HS-PS4-3

When the temperature of black body radiation is decrease, the maximum intensity of the radiation will be...

• Move to the longer wavelength

• Move to the higher frequency

• There is no change

• First it moves to the shorter wavelength and after that move back to the longer wavelength

• Depends on the condition

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-3

As the wavelength of the radiation decreases, the intensity of the black body radiations

• increases

• decreases

• first increases then decreases

• first decreases then increases

Tags

NGSS.HS-PS4-1

A blackbody curve on a graph tells us how an object releases

• radio waves according to Planck's constant.

• light through a black hole's event horizon.

• radiation over different frequencies.

• heat over time.

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NGSS.HS-PS4-1

NGSS.HS-PS4-3

According to Wien's Law, what is the relationship between the temperature of a blackbody and the peak wavelength of its emitted radiation?

• Directly proportional

• Inversely proportional

• No relationship

• The square of the temperature is proportional to the wavelength

Which of the following best describes a blackbody in the context of blackbody radiation?

• A body that reflects all incident electromagnetic radiation

• A body that transmits all incident electromagnetic radiation

• A body that absorbs all incident electromagnetic radiation without reflecting any

• A body that only absorbs visible light

Tags

NGSS.HS-PS4-3

• Newton's law of universal gravitation

• Wien's displacement law

• The Doppler effect

• Hubble's law

Blackbody curves also tell astronomers about the ___ of an object (like a star).

• rotational energy

• temperature

• distance

• composition

Tags

NGSS.HS-ESS1-1

What color would this object glow if it were heated to 5,000 K?

• Green

• Yellow

• Red

• Infrared

Tags

NGSS.HS-PS4-3

Which object has the highest temperature?

• A

• B

• C

• D

• F

Tags

NGSS.HS-PS3-4