In one or two sentences, describe what would happen to the frequency of a wave if the wavelength is increased to 10m but the speed stays the same at 600 m/s.
15 answers
The frequency of the wave would decrease because the frequency is inversely proportional to the wavelength, meaning that as the wavelength increases, the frequency decreases as long as the speed stays the same.
Red tape can be used to repair a broken taillight on a car. In one or two sentences, explain how different colors of light are transmitted, reflected, and absorbed by this kind of tape.
Different colors of light are transmitted through red tape because the tape allows red light to pass through easily while absorbing and reflecting other colors of light. This selective transmission of red light is what gives the tape its red color and allows it to repair a broken taillight by mimicking the original light color.
You want to make a photo album for your friend. In three to five sentences, describe at least one advantage and one disadvantage of choosing a digital photo album rather than a physical one. Analyze a potential solution to the disadvantage.
One advantage of choosing a digital photo album is the ability to store and access a large number of photos in one convenient location without taking up physical space. However, a disadvantage is the risk of losing all the photos if the digital storage device fails or gets damaged. To solve this disadvantage, one could regularly back up the digital photo album to an external storage device or cloud storage to ensure that the photos are safely preserved.
Which type of wave can carry energy through a vacuum?
Electromagnetic waves, such as light waves or radio waves, can carry energy through a vacuum. This is because electromagnetic waves do not require a medium (such as air or water) to propagate, and they can travel through empty space, including a vacuum.
The table below shows information about two waves. What conclusion(s) can you make?
Wave Wavelength (meters) Frequency (hertz)
W | 5 | 200
X | 3 | 300
Wave Wavelength (meters) Frequency (hertz)
W | 5 | 200
X | 3 | 300
From the given information, we can conclude that Wave X has a shorter wavelength and a higher frequency compared to Wave W. This indicates that Wave X has higher energy and a shorter period because frequency and wavelength are inversely related.
A student drops a rock in a pond and notices that her reflection in the water becomes less clear. What explains the student’s observation?
The disturbance caused by dropping the rock creates waves in the water, and these waves can disrupt the normally smooth surface of the water. The ripples caused by the waves can distort the reflections on the water's surface, making them less clear.
A room with which type of surface will most likely produce an echo?
A room with hard, flat surfaces such as concrete walls, tiled floors, or large windows is most likely to produce an echo. Sound waves reflect off these surfaces easily, leading to the creation of echoes in the room.
A student puts a piece of black paper and a piece of white paper in the same sunny spot. After 30 minutes, she observes that the black paper feels warmer than the white paper. What explains the student’s observation?
The black paper feels warmer than the white paper because black surfaces absorb more light and heat from the sun compared to white surfaces. The black paper absorbs more of the sun's radiation, converting it into heat energy, while the white paper reflects more of the sun's radiation, leading to less heat absorption.
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