Sound waves are caused by

• amplitude
• pitch
• a medium
• vibrations of particles through matter

Arjun is tuning his guitar and wants to make the pitch of a particular string lower. To achieve this, he should

• decrease its wavelength

• increase its amplitude

• decrease its frequency

• increase its speed

The loudness of a sound is determined by its

• amplitude
• frequency
• speed
• wavelength

Mia and Rohan are conducting an experiment to understand how sound travels through different mediums. Which of the following statements is true based on their observations?

• sound travels faster in air than in water

• sound travels faster in solids than liquids

• sound travels fastest in a vacuum

• sound travels slowest in liquids

Avery is conducting an experiment to test sound travel. Which of the following materials will not allow sound to travel through it?

• space

• air

• water

• wood

Which of the following statements describes the relationship between pitch and frequency?

• the higher the frequency, the lower the pitch
• the lower the frequency, the lower the pitch
• the lower the frequency, the higher the pitch
• frequency and pitch are not related

Nora is conducting an experiment where she shines a flashlight through air and then into a tank of water. What happens to the light as it enters the water?

• Light slows down.

• Light speeds up.

• Speed of light does not change.

Noah and Harper are discussing different types of energy. Noah mentions a type of energy that travels as a wave and requires a medium to propagate. What type of energy is Noah referring to?

• Transverse

• Longitudinal

• Electromagnetic

• Mechanical

Luna was observing a slinky toy. She noticed that when she pushed and pulled one end, the coils moved back and forth along the path of the slinky. What type of wave is this an example of?

• Transverse

• Longitudinal

• Electromagnetic

• Mechanical

Mia is observing a slinky toy. When she pushes and pulls one end, she notices the coils move in the direction of the wave. This is a _____ wave.

• transverse

• longitudinal