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Lesson 29 of 84 ยท Human Impacts on Earth

Experiment

Sound Waves and Vibrations (Part 2)

What You'll Learn

Waves transfer energy without transferring matter. Transverse waves (like light) vibrate perpendicular to the direction of travel. Longitudinal waves (like sound) vibrate parallel.

Key Words

  • experiment
  • conclusion

Materials Needed

  • ruler
  • markers
  • popsicle sticks
  • pennies
  • plastic wrap
  • cardboard

Safety First

  • Wash hands after handling materials.

Steps

Step 1 โ€” Read

Read and learn: Waves transfer energy without transferring matter. Transverse waves (like light) vibrate perpendicular to the direction of travel. Longitudinal waves (like sound) vibrate parallel.

Step 2 โ€” Do

Repeat the experiment two more times for accuracy.

Step 3 โ€” Observe

Note any unexpected results.

Step 4 โ€” Record

Share your findings with the class or a partner.

Check Your Understanding

Question 1

1 of 3

What is the electromagnetic spectrum?

Sound Waves and Vibrations (Part 2) โ€” Human Impacts on Earth | 7th Grade Science | LittleActivity | LittleActivity