Light and the Atomic Spectra

Decide whether each of the following spectra is continuous or dicontinuous.

Groups:

(a) Continuous

,

(b) Discontinuous

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• 
• 
• 
• 
• 

Tags

NGSS.HS-PS4-3

A continuous spectrum between 300 nm and 565 nm ​ (a)   contain light with a wavelength of 356 nm.

• must
• may
• does not

Tags

NGSS.HS-PS4-1

A continuous spectrum between 532 nm and 894 nm contains light of every wavelength ​ (a)   532 nm and ​ (b)   894 nm.

• greater than
• less than

Tags

NGSS.HS-PS4-1

A discontinuous spectrum between 532 nm and 894 nm contains light of every wavelength between 532 nm and 894 nm ​ (a)   650 nm.

• except for
• including

What is another name for an atomic spectrum?

(a)  

When an electric current is passed through neon, it glows​ (a)   .

• orange
• blue
• green
• yellow

Tags

NGSS.HS-PS4-3

NGSS.HS-PS4-4

When an electric current is passed through argon, it glows​ (a)  

• blue.
• orange
• yellow
• green

Tags

NGSS.HS-PS4-4

If a mixture contains hydrogen and oxygen, how many lines would you see in the emission spectrum?

• 4

• 11

• 15

• 19

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-3

1. LEDs, or light emitting diodes, produce light by passing an electric current through a mixture of different atoms (or molecules) and then using their combined emission spectra to light up a room, or a string of Christmas tree lights. Why are white LEDs difficult and expensive to make?

Tags

NGSS.HS-ETS1-3