Stellar Spectra Quiz

What type of spectrum is shown below?

• continuous spectrum

• absorption spectrum

• black line spectrum

• emission spectrum

Tags

NGSS.MS-PS4-2

NGSS.MS-PS4-1

What gases are in the unknown mixture?

Select all that apply

• Gas A

• Gas B

• Gas C

• Gas D

Which elements are in the unknown sample?

• A and B
• B and C
• A and D
• B and D

Tags

NGSS.MS-PS1-1

The unknown emission spectra belongs to the element

• Hydrogen

• Mercury

• Neon

• Sodium

Tags

NGSS.MS-PS4-2

Using the bright-line emission spectrum chart below, identify the elements present in this modeled star (found in the line labeled “mixture”). Select all that apply

• Lithium

• Strontium

• Cadmium

Tags

NGSS.MS-PS1-1

Which elements are in the mixture?

• A only

• D only

• Z only

• A and D

• D and Z

Each element on the periodic table can be identified by its

• classification as a solid, liquid or gas.

• location on the table.

• ability to react to form compounds.

• unique spectral "fingerprint."

A scientist has a sample of an unknown gas. To identify it, she observes which wavelengths of light are absorbed by it. Below is the absorption spectra for the unknown gas. Which element is the unknown gas?

• Helium
• Oxygen
• Neon
• Xenon

Answer explanation

Find which element's spectral lines match the unknown gas.

Tags

NGSS.HS-PS1-1

NGSS.HS-PS4-1

A scientist has a sample of an unknown gas. In order to identify the gas, she looks at the spectrum of visible light emitted from it when it is heated. This is shown in the figure. Which of the three elements is the unknown gas?

• Hydrogen

• Helium

• Oxygen

• None of the above

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which of the following is not a primary color of light?

• Red
• Green
• Blue
• Yellow