March 25, 2015 “Wavestown” sheet Label the 7 types of EM waves Try to list as many uses or locations for EM radiation in the picture Take out notes & GIZMO Homework: Read/notes, chapter 22, 3 & 4. SkillsTutor due Friday.

visible micro-wave infrared gamma UV X-ray radio

Predict & Observe White light Red light Black light What do you think you will see? White light Red light Black light

Diffraction

Explain Relate the amount of energy to wavelength. How did the temperature of the bulb affect the spectra that were observed? Relate the amount of energy to wavelength.

Refraction Animation

Spectra

Predict & Observe Do you think you will see emission or absorption spectra? What do you think a spectra of a compound will look like?

Explain Why did you see emission spectra? Why did the spectra of water look like it did?

Question 1 A wave has a low speed, but a high frequency. What can be inferred about its wavelength? A. The distance a wave will vibrate from its resting point. B. The wavelength will be very long C. It depends on how fast the speed is D. The wavelength will be short

Answer 1 A wave has a low speed, but a high frequency. What can be inferred about its wavelength? A. The distance a wave will vibrate from its resting point. B. The wavelength will be very long C. It depends on how fast the speed is D. The wavelength will be short

Question 2 How is amplitude related to energy? A. The larger the amplitude, the more energy a wave carries B. The larger the amplitude, the less energy a wave carries C. The shorter the amplitude, the more energy a wave carries D. Amplitude is not related to energy

Answer 2 How is amplitude related to energy? A. The larger the amplitude, the more energy a wave carries B. The larger the amplitude, the less energy a wave carries C. The shorter the amplitude, the more energy a wave carries D. Amplitude is not related to energy

Question 3 What is the distance between two adjacent wave compressions? A. 1 m/s B. 1 wavelength C. 1 Hz D. 1 amplitude

Answer 3 What is the distance between two adjacent wave compressions? A. 1 m/s B. 1 wavelength C. 1 Hz D. 1 amplitude

Question 4 Ultraviolet light has a higher frequency than infrared light has. Which statement about visible light is true? A. Blue light has a longer wavelength than orange light has. B. Green light has a higher frequency than violet light has. C. Yellow light has a shorter wavelength than blue light has. D. Red light has a lower frequency than green light has.

Answer 4 Ultraviolet light has a higher frequency than infrared light has. Which statement about visible light is true? A. Blue light has a longer wavelength than orange light has. B. Green light has a higher frequency than violet light has. C. Yellow light has a shorter wavelength than blue light has. D. Red light has a lower frequency than green light has.

Question 5 Which light interaction explains why you can see things that do not produce their own light? A. absorption B. reflection C. refraction D. scattering

Answer 5 Which light interaction explains why you can see things that do not produce their own light? A. absorption B. reflection C. refraction D. scattering

Spectra II High Resolution Solar Spectra

The Sun In other wavelengths…