CREATION OF WAVES
PROCEDURES
Setup 1
1. Place the basin on sturdy, flat table, and half fill it with water, Wait for the water to still before doing the next step
2.Drop the stone or coin into the water then observe what will happen.
3. Write your observation
Setup 2
1.Place/soaked the Oslo paper/bond paper inside the basin filled with water.
2.Using the dropper, start dropping water or making “ripple” in the middle of the basin
3.Observe the direction/formation of the waves. Write your observation.
PROCESS QUESTIONS.:
1.Based on the activity, hiw were waves found?
2.What was the shape formed as water from the dropper fell on the basin?
3.What did the experiment show about waves?
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When that pebble is dropped in the pond, it pushes water out of the way. The water has nowhere to go but to the side and up, creating a circular peak around the drop point. This peak falls again, under the forces of gravity and surface tension, pushing the water beneath it out of the way.
On the inside of the circle, this newly pushed water fills the hole left by the pebble passing through. But on the outside, it creates a new circular peak, just a little further out.
So a ripple spreads out from the drop point even though the individual water molecules are mostly just moving up and down in place.
More generally, waves need something to wave in: a medium. Water, air, power lines and the electromagnetic field are all suitable media. Even spacetime itself will do, in the case of gravitational waves.
Waves are simply distortions moving through the medium. These distortions can be started off by many means: a dropped pebble, a shout, a radio transmitter or colliding black holes.
In each case, the medium has some degree of elasticity and responds to a distortion by trying to snap back into shape. But this distorts the neighbouring region, and so on, and so a wave is born.
The strength of the distortions is called the amplitude of the wave, and is closely related to its energy.