1. Question 1
1) wavelength
2) frequency
3) period
4) amplitude
5) energy
The distance between successive wave crests defines the ________ of a wave.

2. Question 1
1) wavelength
2) frequency
3) period
4) amplitude
5) energy
The distance between successive wave crests defines the ________ of a wave.
Light can range from short-wavelength gamma rays to long-wavelength radio waves.

3. Question 2 Which of these is NOT a form of electromagnetic radiation?
1) gamma rays
2) infrared
3) sound
4) visible light
5) radio
Which of these is NOT a form of electromagnetic radiation?

4. Question 2 Which of these is NOT a form of electromagnetic radiation?
1) gamma rays
2) infrared
3) sound
4) visible light
5) radio
Which of these is NOT a form of electromagnetic radiation?
Sound comes from pressure waves; all others are types of EM radiation of different wavelengths.

5. Question 3
1) radio & microwaves
2) X rays & ultraviolet light
3) infrared & gamma rays
4) visible light & radio waves
5) visible & ultraviolet light
What types of Electro-Magnetic Radiation from space reach the surface of Earth?

6. Question 3
1) radio & microwaves
2) X rays & ultraviolet light
3) infrared & gamma rays
4) visible light & radio waves
5) visible & ultraviolet light
What types of Electro-Magnetic Radiation from space reach the surface of Earth?
Earth’s atmosphere allows radio waves & visible light to reach the ground.

7. Question 4
1) radius.
2) mass.
3) magnetic field.
4) temperature.
5) direction of motion.
The frequency at which a star’s intensity is greatest depends directly on its

8. Question 4
1) radius.
2) mass.
3) magnetic field.
4) temperature.
5) direction of motion.
The frequency at which a star’s intensity is greatest depends directly on its
Wien’s Law means that hotter stars produce much more high frequency light.