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Sagot :
Let's analyze each of the observations Levi recorded in the chart according to the known properties of sound waves and light waves.
1. Wave W: "travels fastest through metal"
- Sound waves travel fastest in solids such as metals because the particles in solids are closely packed, allowing sound to propagate quickly.
- Light waves, however, are generally slower in solids because light slows down as it passes through denser materials.
2. Wave X: "travels fastest through air"
- Light waves travel fastest in air (and even faster in a vacuum), as air is a much less dense medium compared to solids and liquids.
- Sound waves travel faster in solids and liquids than in gases like air, so sound does not travel fastest through air.
3. Wave Y: "travels more slowly through water than air"
- Light waves slow down when they pass from air into water because water is denser than air.
- Sound waves, conversely, travel faster in water than in air due to the higher density of water aiding sound wave propagation.
Based on these observations, we can conclude:
- Wave W: The characteristics indicate it is a sound wave because it travels fastest through metal.
- Wave X: The characteristics indicate it is a light wave because it travels fastest through air.
- Wave Y: The characteristics indicate it is a light wave because it slows down in water compared to air.
Considering the statements provided, the best supported statement is:
- "Wave W is a sound wave."
- "Wave X is a light wave."
- "Wave Y is a light wave."
Therefore, the statement that is best supported by the table is:
Waves X and Y are light waves.
1. Wave W: "travels fastest through metal"
- Sound waves travel fastest in solids such as metals because the particles in solids are closely packed, allowing sound to propagate quickly.
- Light waves, however, are generally slower in solids because light slows down as it passes through denser materials.
2. Wave X: "travels fastest through air"
- Light waves travel fastest in air (and even faster in a vacuum), as air is a much less dense medium compared to solids and liquids.
- Sound waves travel faster in solids and liquids than in gases like air, so sound does not travel fastest through air.
3. Wave Y: "travels more slowly through water than air"
- Light waves slow down when they pass from air into water because water is denser than air.
- Sound waves, conversely, travel faster in water than in air due to the higher density of water aiding sound wave propagation.
Based on these observations, we can conclude:
- Wave W: The characteristics indicate it is a sound wave because it travels fastest through metal.
- Wave X: The characteristics indicate it is a light wave because it travels fastest through air.
- Wave Y: The characteristics indicate it is a light wave because it slows down in water compared to air.
Considering the statements provided, the best supported statement is:
- "Wave W is a sound wave."
- "Wave X is a light wave."
- "Wave Y is a light wave."
Therefore, the statement that is best supported by the table is:
Waves X and Y are light waves.
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