Light and Sound

How does an emergency vehicle communicate with people?

• lights

• sound

• light and sound

• music

Adam is playing outside. He wants his brother to come outside and play with him. Adam bangs on his drum to signal his brother inside the house. What did Adam’s device use to communicate information?

• Wind

• Heat

• Light

• Sound

Which of the following is a primary source of light?

• The Moon

• A Candle

• A Mirror

• A Prism

What is the main reason we see lightning before we hear thunder?

• Light travels faster than sound

• Sound travels faster than light

• Lightning is brighter than thunder

• Thunder is louder than lightning

Which of the following instruments is used to measure sound intensity?

• Thermometer

• Barometer

• Decibel meter

• Anemometer

What is the phenomenon called when light bends as it passes through a medium?

• Reflection

• Refraction

• Diffusion

• Absorption

Which of the following colors of light has the shortest wavelength?

• Red

• Green

• Blue

• Violet

What is the term for materials that do not allow light to pass through them?

• Transparent

• Translucent

• Opaque

• Reflective

Which part of the human ear is responsible for converting sound waves into electrical signals?

• Eardrum

• Cochlea

• Auditory Canal

• Pinna

What is the speed of sound in air at room temperature?

• 343 meters per second

• 299,792 kilometers per second

• 1,235 kilometers per hour

• 1500 meters per second