blackbody radiation article

What happens to the color of a light bulb filament as the temperature increases?

• It changes from red to orange to white.

• It changes from white to orange to red.

• It remains red.

• It remains white.

What is a blackbody object according to classical physics?

• An object that absorbs all energy and emits it as radiation.

• An object that reflects all energy and emits it as radiation.

• An object that absorbs some energy and reflects the rest.

• An object that emits energy without absorbing any.

What did Max Planck determine about energy?

• Energy is quantized into small packets.

• Energy is continuous and not quantized.

• Energy can be in fractional steps.

• Energy is not related to frequency.

What is the relationship between wavelength and frequency if the velocity is constant?

• As wavelength decreases, frequency increases.

• As wavelength decreases, frequency decreases.

• Wavelength and frequency are unrelated.

• As wavelength increases, frequency increases.

What is the ultraviolet catastrophe?

• The decrease in intensity of emitted light to zero as objects are heated.

• The increase in intensity of emitted light as objects are heated.

• The constant intensity of emitted light regardless of temperature.

• The inability of blackbody objects to emit any light.

A blackbody object absorbs all _____ it is exposed to

As the temperature of a blackbody increases, the intensity of emitted light __________

Max Planck introduced the concept of _______________ energy

Our sun and other stars are examples of ideal __________________ objects

1. Planck’s constant is a very ______ number.