Tag Archives: Waves

A2L Item 303

Goal: Unspecified.

Source: Unspecified.

The sky appears to be blue during the day because:

  1. Air absorbs blue light less than any other frequency
  2. Air molecules emit blue light after being struck by sunlight
  3. The sky reflects blue light from the oceans
  4. The temperature high in the Earth’s upper atmosphere is 1000K
  5. None of the above

Commentary:

None provided.

A2L Item 302

Goal: Unspecified.

Source: Unspecified.

The sun appears to be yellow when overhead because:

  1. The human eye is most sensitive to yellow
  2. Yellow frequencies are transmitted better through the atmosphere
  3. Air does not absorb yellow frequencies
  4. The temperature of the Sun is 6000K
  5. None of the above

Commentary:

None provided.

A2L Item 301

Goal: Unspecified.

Source: Unspecified.

A particular object appears to be red. The reason it appears red is.

  1. It absorbs ONLY RED frequencies as they hit it
  2. It reflects ONLY RED frequencies as they hit it
  3. It absorbs RED frequencies MORE than any other frequencies
  4. It reflects RED frequencies MORE than any other frequencies
  5. It emits RED frequencies more than any other frequencies
  6. Not enough information

Commentary:

None provided.

A2L Item 299

Goal: Unspecified.

Source: Unspecified.

The phenomenon of interference arises due to:

  1. Superposition of waves
  2. Coherence of wave trans
  3. Sensitivity of the light
  4. Cancellation between the two waves
  5. Inability of the medium to respond to the wave disturbance
  6. Something else

Commentary:

None provided.

A2L Item 295

Goal: Unspecified.

Source: Unspecified.

Refraction occurs at the interface between two transparent media
because:

  1. The mass density of the material changes
  2. The frequency of the light changes
  3. The speed of the light is different in the two media
  4. The direction of the light changes
  5. Some of the light is reflected
  6. None of the above

Commentary:

None provided.