Unit 5 Waves Test

Emma noticed that when she looked at a straw in a glass of water, the straw appeared bent. This is because the light wave changes its __________ as it passes from air to water.

• reflection

• refraction

• diffraction

• absorption

Rohan noticed that his house with carpet is much quieter than his friend's house with tile floors because of sound wave __________.

• absorption

• diffraction

• reflection

• refraction

During a science class, Sophia was asked to identify an example of a compressional wave. Which one should she choose?

• X-ray

• gamma ray

• sound wave

• water wave

Abigail is playing her guitar and wants to make the sound louder. What should she do to the amplitude of the sound wave?

• Increase it

• Make it have a higher pitch

• Make it travel faster

• Produce beats

Sophia is observing ocean waves crash on the beach at a velocity of 3.5 m/s. If the distance between the crests of each wave is 4 m, find the frequency of the waves.

• 0.88 Hz

• 1.14 Hz

• 0.0088 Hz

• 14.0 Hz

James is looking at a mirror and notices how his reflection appears. This scenario demonstrates which wave behavior?

• absorption

• reflection

• diffraction

• refraction

While hiking in the mountains, Grace shouted towards a cliff and heard her voice coming back to her. This phenomenon is an example of sound wave __________.

• absorption

• reflection

• diffraction

• refraction

Kai is observing waves at the beach and notices that the waves have a frequency of 25 Hz and a wavelength of 10 m. What is the velocity of these waves?

• 250 m/s

• 2.5 m/s

• 35 m/s

• 0.4 m/s

During a science experiment, Priya noticed that a glass prism was able to bend light. This happens because __________.

• light is refracted as it enters a different medium

• the prism creates destructive interference

• energy is diffracted when it encounters an obstacle

• the glass and the light’s wavelength create resonance

David is observing waves at the beach. In 1 second, 4 crests of a wave pass a certain point. What is the wave’s frequency?

• 0.25 Hz

• 0.25 m/s

• 4 Hz

• 4 m/s