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W-Behavior/Speed
| Question | Answer |
|---|---|
| Reflection | When light bounces off a surface. |
| Refraction | When light bends because it enters a new medium. |
| Absorption | When light is taken in by a material and does not pass through. |
| Transmission | When light passes straight through a material. |
| Transparent | Most light passes through; objects can be seen clearly. |
| Translucent | Some light passes through; objects look blurry. |
| Opaque | No light passes through. |
| Scattering | Light spreads out in many directions. |
| Why does a red apple appear red? | It reflects red wavelengths and absorbs all others. |
| Why does a pond show a reflection? | Light reflects off the smooth surface. |
| What happens to light entering glass? | It refracts (bends). |
| Why does a straw look bent in water? | Light refracts when moving from air to water. |
| Model that shows reflection | The ray bouncing off the surface. |
| Model that shows refraction | The ray bending as it enters the medium. |
| Model that shows diffraction | The wave bending around a barrier or through an opening. |
| Model that shows absorption | No wave continues after hitting the surface. |
| Where does light travel fastest? | In the least dense medium. |
| Density | How tightly particles are packed together. |
| High density particles | Particles packed closely together. |
| Low density particles | Particles spread far apart. |
| Transparent materials | Clear glass and water. |
| Transparent vs translucent | Transparent lets light through clearly; translucent scatters light. |
| Why is sound a mechanical wave? | It must have a medium to travel through. |
| Why can't sound travel in space? | There is no medium or particles to vibrate. |
| Where does sound travel fastest? | Solids. |
| Where does sound travel slowest? | Gases. |
| Why does sound travel faster in solids? | Particles are closer so vibrations transfer quickly. |
| Why does sound travel slowest in gases? | Particles are far apart and collide less often. |
| Higher density particle model | The model with particles packed closely together. |
| Fastest light travel from data | The material with the lowest density. |
| Transparent from data table | The material light passes through clearly. |
| Translucent from data table | Light passes through but objects appear blurry. |
| Opaque from data table | No light passes through. |
| Speed of sound pattern | Solids > Liquids > Gases. |
| Density and light speed | Lower density = faster light. |
| Density and sound speed | Higher density = faster vibration transfer. |
| Which interaction causes an echo? | Reflection. |
| Which model shows an echo? | The model where the wave bounces back. |
| What is a medium? | The material a wave travels through. |
| Particles close together means? | The material has high density. |
| Particles far apart means? | The material has low density. |
| What does a wave carry? | Energy |
| Absorb light means? | Light energy is taken in and not reflected or transmitted. |
| What is a reflected ray? | The ray that bounces off a surface. |
| What is an incident ray? | The incoming ray hitting a surface. |
| If a light ray bends toward the normal | what happened to its speed? |
| If a light ray speeds up | what happens to its angle? |
| If no light passes through a material | it is? |
| If light passes but the image is blurry | it is? |
| Seeing a mirror image on water is caused by? | Reflection. |
| Object looks distorted through water because of? | Refraction. |
| Why does light slow down in water or glass? | Because it enters a denser medium. |
| Which material gives the clearest image? | Transparent material. |
| Which material blurs the image? | Translucent material. |
| If Material A is denser than Material B | where will light travel faster? |
| If Material A has faster sound speed than Material B | what does that mean? |
| Light passes through Material X clearly. What is X? | Transparent. |
| Some light passes but the object is blurry. What is the material? | Translucent. |
| No light passes through a material. What is it? | Opaque. |
| Claim: Sound travels slowest in gas. What is the evidence? | Gas particles are far apart. |
| Reasoning for the claim? | Fewer collisions = slower energy transfer. |
| Why does an echo occur? | Sound waves reflect back. |
| Which surface creates the strongest echo? | Smooth |
| Which surface absorbs sound the most? | Soft materials like carpet. |
| Flashlight hits a mirror | what happens? |
| Flashlight hits frosted glass | what happens? |
| Pencil in water looks bent because? | Refraction. |
| Why can you still see through water with food coloring? | Water is transparent. |
| Sound travels faster in water or air? | Water. |
| Light travels faster in air or glass? | Air. |
| Light slowing down changes direction how? | Bends toward the normal. |
| Light speeding up changes direction how? | Bends away from the normal. |
| Mechanical wave definition | A wave that needs a medium (sound). |
| Electromagnetic wave definition | A wave that does not need a medium (light). |
| Why can light travel through space? | It does not need a medium. |
| Why can't sound travel through space? | No particles = no vibration. |
Created by:
user-1962177