5.1 Thermal Spectra GOW

1. What are the topics of the graphs?

• The relative brightness of the continuous spectra and the frequency (K) of different stars and objects at different temperatures (Hz).
• The relative brightness of the continuous spectra and the frequency (Hz) of different stars and objects at different temperatures (K).
• The relative brightness of the emission spectra and the frequency (K) of different stars and objects at different temperatures (Hz).
• The relative brightness of the emission spectra and the frequency (Hz) of different stars and objects at different temperatures (K).

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-3

2. What quantities are being compared on the x axis?

• Brightness (relative)
• Frequency (Hz)
• Temperature (K)
• Continuous Spectra

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-3

3. What quantities are being compared on the y axis?

• Brightness (relative)
• Frequency (Hz)
• Temperature (K)
• Continuous Spectra

Tags

NGSS.HS-PS4-1

4. What is the temperature of a human?

• 15,000 K
• 3,000 K
• 1,800 K
• 310 K

5. Which object is the brightest and has the greatest range in frequency?

• glowing steel 1,800 K
• the sun 5,800 K
• star 3,000 K
• star 15,000 K

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-3

6. Which of the following is an observation that can be made based on interpreting the graph?

• Objects with hotter temperatures emit higher frequencies of energy and brightness.
• Objects with cooler temperatures emit higher frequencies of energy and brightness.
• Objects with hotter temperatures emit very low frequencies of energy and brightness.

Tags

NGSS.HS-PS4-1

7. The temperature of the sun is ____________ the temperature of a human.

• lower than
• higher than
• the same as

8. The spectrum of the sun is ______________ the spectrum of a human.

• completely below
• partly above
• completely above

Tags

NGSS.HS-PS4-3

9. As the temperature increases, the amount of light at any frequency _____________.

• decreases
• increases
• stays the same

Tags

NGSS.HS-PS3-4

10. The peak of a human's spectrum is the __________ range.

• infrared
• ultraviolet
• x-ray