Untitled Presentation

Multiple Choice

Which of the following is an example of refraction?

• A pencil appearing bent in a glass of water

• A mirror reflecting your image

• A room lit by sunlight

• A bright glare on a computer screen

Multiple Select

Select all the correct statements about the frequencies of sound that humans and animals can hear.

• Humans can hear sounds between 20 Hz and 20,000 Hz.

• Dogs can hear ultrasonic frequencies as high as 45,000 Hz.

• All animals hear the same frequency range as humans.

• Frequencies above 20,000 Hz are called ultrasound.

Multiple Choice

Which unit is used to measure the intensity of sound?

• Decibel (dB)

• Hertz (Hz)

• Watt (W)

• Meter (m)

Multiple Choice

Based on the decibel scale, which sounds are considered extremely loud?

• Fireworks and jet engines

• Leaves rustling and whispering

• Refrigerator and normal conversation

• Car horn and hair dryer

Multiple Choice

Which of the following best describes reverberation in acoustics?

• The persistence of sound after it is produced

• The absorption of sound by surfaces

• The reduction of noise in a room

• The increase of sound frequency

Open Ended

List three factors that affect comfort levels in buildings.

Multiple Select

Which of the following are sources of noise in buildings as shown in the diagram?

• Aircraft noise

• Traffic noise

• Plumbing noise

• Visual comfort

Multiple Choice

Which of the following sources is most likely to contribute to noise pollution in urban areas?

• Airplanes

• Bicycles

• Trees

• Books

Multiple Select

Which of the following are purposes of sound insulation in buildings?

• Privacy

• Comfort

• Noise control

• Decoration

Open Ended

After reviewing the terms Reflection, Refraction, Glare, and Daylight, do you have any questions or topics you would like to explore further about light and its behavior?