Electromagnetic Waves
Mechanical Waves
Prefixes
Waves (Difficult Questions)
Emojis
100
True or False: Electromagnetic waves are waves that consist of vibrating electric and magnetic fields
True
100
True or False: . A mechanical wave is a disturbance in matter that transfers energy through the mass.
False, it transfer through matter.
100
Define the prefix trans in regards to waves (example: transverse)
Across or perpendicular.
100
What is a vibration in relation to waves?
A vibration is a back-and-forth motion of particles around a resting position that produces a wave.
100
🌊
What word related to waves do these emojis represent?
Waves
200
True or False:
Electromagnetic waves DO NOT transfer energy from one place to another.
False
200
True or False: A source of energy is needed to disturb matter and start a mechanical wave.
True
200
Give an example of transverse waves
Waves on a rope or light waves.
200
What is the difference between a transverse wave and a longitudinal wave?
In a transverse wave, particles move perpendicular (up and down) to the direction the wave travels.
In a longitudinal wave, particles move parallel (back and forth) to the direction the wave travels.
200
🎸〰️
Medium
300
How do microwaves transfer energy inside a microwave oven?
They transfer energy through the air inside the oven to the food.
300
Where does the energy come from in the water wave pictured above?
The energy comes from the falling droplets of water, which have kinetic energy because of their motion.
300
What does the prefix Longi- mean? (Example: Longitudinal)
Along or lengthwise.
300
What is a mechanical wave, and what does it need in order to travel?
A mechanical wave is a wave that requires a medium (solid, liquid, or gas) to travel through.
300
⬅️➡️➡️⬅️
Particles moving back and forth in the same direction as the wave. What type of wave is this?
Transverse wave
400
How could you demonstrate that a magnet can exert force on objects without touching them?
You could put small objects containing iron, such as paper clips, near a magnet and show that they move toward the magnet.
400
How do the particles of the medium move when a wave passes through them?
The particles of the medium just vibrate in place. As they vibrate, they pass the energy of the disturbance to the particles next to them, which pass the energy to the particles next to them, and so on. Particles of the medium don’t actually travel along with the wave. Only the energy of the wave travels through the medium.
400
Give an example of Longitudinal waves.
Sound waves in air.
400
Sound waves travel through air by compressing and expanding air particles. Are sound waves transverse or longitudinal? Explain why.
Sound waves are longitudinal waves because the air particles move back and forth in the same direction as the wave travels.
400
🌌✨📡
A wave that can travel through space without a medium. What type of wave is this?
Electromagnetic wave
500
Define electromagnetic radiation.
The transfer of energy by electromagnetic waves
500
How do you think surface waves are related to transverse and longitudinal waves?
A surface wave is combination of a transverse wave and a longitudinal wave.
500
What do Vibration wave do AND give an example.
Meaning: To shake or oscillate.
Example: When a guitar string moves rapidly back and forth, it vibrates, creating sound waves.
500
What is one key difference between mechanical waves and electromagnetic waves?
Mechanical waves need a medium to travel, but electromagnetic waves can travel through empty space (a vacuum).
500
⬆️⬇️➡️
Particles moving up and down while the wave travels forward. What type of wave is this?
Transverse wave