Warm Up Quiz April 2
10 Questions
| Total Attempts: 147
Warm Up dates 3/19- 3/30
Questions and Answers
- 1.March 19 Electromagnetic waves consist of changing elecrical and magnetic fields.
- A.
True
- B.
False
- 2.March 21 Polarization is when light shines on some materials, light passes through and on others it doesn't. This proves that light is a wave.
- A.
True
- B.
False
- 3.March 23 AM radios stations broadcast by changing the frequency, FM stations broadcast by changing the amplitude.
- A.
True
- B.
False
- 4.March 23 AM waves can travel longer distances than FM waves, but the sound quality is not as high.
- A.
True
- B.
False
- 5.March 26 Cell phones send signals to nearby receivers in order to connect a phone call.
- A.
True
- B.
False
- 6.March 28 Light and sound are both waves.
- A.
True
- B.
False
- 7.March 28 Light is an electromagnetic wave that can travel through a vacuum, sound cannot travel through a vacuum.
- A.
True
- B.
False
- 8.March 29 Fluorescent lights are commonly used in businesses and schools because they are NOT energy efficient.
- A.
True
- B.
False
- 9.March 30 You can find the daily warm ups on the class Twitter.
- A.
True
- B.
False
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