Space & Light Flashcard (with redshift) 2024

Front

What happens to the color of an object as it is heated?

Back

As an object is heated, it changes color from infrared to red to orange to yellow to white to blue to ultraviolet.

Front

Which element is present in a lab sample of gas if the options are Beryllium, Manganese, Strontium, and Titanium?

Back

Strontium is present in the sample.

Front

What does the blackbody curve for a star that releases most of its energy in the visible spectrum look like?

Back

The blackbody curve for such a star is represented by option B.

Front

What are the wavelengths and frequencies of gamma rays?

Back

Gamma rays have the shortest wavelengths and the highest frequencies.

Front

What does a blueshift indicate about the motion of an object relative to Earth?

Back

A blueshift indicates that the object is moving towards Earth.

Front

What is redshift?

Back

Redshift is the phenomenon where light from an object moving away from an observer is shifted to longer wavelengths.

Front

What is the electromagnetic spectrum?

Back

The electromagnetic spectrum is the range of all types of electromagnetic radiation, including visible light, radio waves, and gamma rays.

Front

What is a blackbody?

Back

A blackbody is an idealized physical object that absorbs all incoming radiation and re-emits it perfectly at all wavelengths.

Front

How does temperature affect the color of light emitted by an object?

Back

As the temperature of an object increases, the color of the light it emits shifts to shorter wavelengths.

Front

What is the significance of the visible spectrum in astronomy?

Back

The visible spectrum is important in astronomy as it allows astronomers to study the light emitted by stars and other celestial objects.