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Physics Revision
Science 2026
| Question | Answer |
|---|---|
| What is light? | Light is the range of electromagnetic waves that humans can see |
| What is the electromagnetic spectrum? | Full range of electromagnetic radiation |
| Do short wave lengths have high or low energy? | High energy |
| Do long wave lengths have high or low energy? | Low engergy |
| What are examples of electromagnetic radiation with long wavelengths? | Radio, microwaves, visible light and infrared |
| What are examples of electromagnetic radiation with short wavelengths? | Ultraviolet, x-rays and gamma rays |
| What does a period of a wave mean? | How long a wave it takes to go through its full motion once |
| What does frequency mean? | How many waves go by in a second |
| Wavelength meaning | Distance between one crest of a wave and the next crest |
| What are light waves? | Type of electromagnetic radiation, can travel through a vacuum, travels at the speed of light and can be transmitted, reflected or absorbed. |
| How does reflection work/example? | If a ball hits a wall at 90 degrees, it will bounce straight back to you. If you throw at a distance, it bounces away at the same angle. |
| What is the angle of incidence? | The angle of reflection |
| Refraction meaning | Bending of light as it passes from one transparent medium to another. Light travels at different speeds through different mediums |
| Critical angle meaning | The angle of incidence when the refracted light runs along the boundary of the 2 media |
| How does light travel? | Light always travels at a constant speed in a single medium and in a straight line. |
| What are the main properties of light? | Speed, frequency, intensity and wavelength |
| What is a transverse wave? | Particles that move up and down perpendicular to the direction of wave's propagation. |
| What are longitudinal waves? | Particles that move parallel to the wave's propagation |
| When there are short length there is ... frequency | High |
| When there are long length there is ... frequency | Low |
| How do you calculate the wave speed? | Frequency X wavelength |
| What is the formula for reflection? | i degrees = r degrees |
| How is sound produced? | Sound is produced when an object vibrates which causes surrounding particles in a medium to move back and forth |
| How does sound travel? | In waves |
| What are the five characteristics of sound waves? | Frequency, amplitude, wavelength, speed and time period. |
| How does sound and pitch relate to each other? | They define the physical nature of a sound wave's energy, pitch, loudness and movement through a medium |
| How is sound volume measured? | Decibels |
| How is sound pitch measured? | Hertz |
| What are materials that can be used to block out sounds? | Mass loaded vinyl, acoustic plasterboard and green glue. |
| If two saucepans with water are being supplied with the same amount of heat, will the one with more or less water be hotter? Why? | The saucepan with less water will be hotter because there are fewer particles so they can absorb more energy and move faster. |
| Is water a good conductor of heat, why or why not? | Water is a poor conductor of heat because the particles don't have free electrons to transfer heat. Water relies on convection to be heated |
| Why are vents of deducted heating systems placed on the floor not the ceiling? | They are placed on the floor because the heat rises and fills the room more effectively than if they were on the ceiling. |
| What does radiation mean? | The transfer of heat through electromagnetic waves |
| What does conduction mean? | Process where heat is transferred through direct contact |
| What does convection mean? | Transfer of heat through liquids |
| What colours absorb heat? | Dark colours absorb radiated heat: absorption |
| What colours reflect heat? | Light colours reflect radiated heat, Reflection |
| What materials transmit heat? | Clear materials like glass transmit radiated heat: transmission |
| What is reflection? | The process where a wave hits a boundary between two different materials and bounces back into the original medium rather than passing through. |
| When does sound occur? | It occurs when something vibrates and then that will produce a sound wave |
| Amplitude meaning? | Distance from rest to crest |
| What happens when the membrane vibrates fast? | When a membrane vibrates fast, the higher the frequency and the pitch of the note |
| Do sound waves travel more quickly through a shorter tube or longer? | Shorter tube |
| What is resonance? | The physical phenomenon where an object or system vibrates at its highest amplitude when exposed to an external force that matches its natural frequency |
| How does resonance make an acoustic guitar louder? | Transferring weak vibrations of the strings into the body of the guitar where they to the top wood and the air inside creating a larger more efficient sound waves |
| How does the speed of sound change with sound waves? | Decreases as altitude increases within the troposphere because the air temperature drops. |
| How does a tuning fork work? | Produces a specific constant musical pitch when struck |
| What is energy? | The ability to do work |
| What is the formula for work? | force X distance |
| What is the transfer of heat called? | Thermal energy |
| How can thermal energy be described? | As kinetic or vibration energy of atoms/molecules in solids, liquids and gases |
| Temperature meaning | Quantitative measure of hotness or coldness |
| Do slow moving atoms have a low temperature? | They have a low temperature which means there is low kinetic energy. |
| Do fast moving atoms have a low temperature? | They have a high temperature which means there is high kinetic energy. |
| Are mass and energy the same thing? | Yes |
| Can energy be destroyed? | No it can't be destroyed or created only transferred |
| What does faster particles equal to... | More energy and more heat |
| Conductor meaning | Object that allows heat to pass through easier |
| Insulators meaning | Objects difficult for heat to pass through |
Created by:
SallyCat861
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