G4 T3 L1 Waves March 1
Presentation
•
Science
•
4th Grade
•
Hard
alaa hussein
Used 6+ times
FREE Resource
14 Slides • 0 Questions
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G4 T3 L1 Waves March 1
Objective: I can tell what a wave is.
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Waves
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Waves
Waves are around us all the time
Light and sound are types of waves
Ripples on a lake are also types of waves.
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Wave
A disturbance that carries energy and travel in repeating patterns.
The disturbances that cause waves are vibrations.
The energy that causes the vibration is the energy carried by the wave.
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How does energy travel?
light energy travel through empty space.
other wave types need a medium to travel through.
Example:
Sound waves travel through air
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Wave Speed
It's different for different wave types of and wave mediums.
Example: speed boat.
Its vibrations make water waves and sound waves at the same time.
The sound of the boat reaches your ear before the water waves do.
Light waves travel even faster than sound waves.
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G4 T3 L1(Waves and Information)
Objective: I can describe the wave characteristics.
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Wave Characteristics
Wave characteristics depend on the vibration that causes the wave.
Example (The Drum)
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Amplitude:
When you hit the drum, the drum surface pushes the air next to it.
The air then makes a sound wave.
Amplitude:
The greatest height of a wave from its position.
High amplitude sounds are louder.
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Wavelength:
The distance between two similar points in a wave.
can be measured between two high points or two low points
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Frequency:
The number of wave repetitions in a certain amount of time.
If the drum head moves faster it will give high frequency.
High frequency have high pitch
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G4 T3 L1 Waves March 1
Objective: I can tell what a wave is.
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