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Science Terms
| Question | Answer |
|---|---|
| Acceleration and formula | Rate at which an objects velocity changes over time Change in velocity/ change in time |
| Static friction | No movement |
| Gravity | The force that pulls an object towards Earth |
| Inertia | An objects tendency to resist or change in motion |
| Universal Law of Gravitation | Mass and distance affect the force of gravity |
| Centripetal force | A force that pulls an object towards the center of a circular path |
| Work and formula | When a force is used to move an object through a distance FxD |
| Power and unit and formula | Amount of work done in a period of time Wyatt’s W/T |
| Magnetic field | The area around a magnet where magnetic forces act |
| Magnetic domain | A group of atoms with magnetic fields pointing the same way |
| Voltage | Push to move electrons |
| Electromagnetic | A magnet made using electricity |
| Nuclear energy | Fission: splitting nuclear to create energy (power plants) Fusion: combining (sun) |
| Mechanical energy | The total energy an object has because of its speed and position |
| Wave | A disturbance that transfers energy from one place to another |
| Control | The standard used for comparison |
| Scalar | Has only magnitude (size/amount) Distance, time, mass, speed |
| Vector | Both magnitude and direction Displacement and velocity |
| Speed definition and formula | How fast an object moves Distance/time |
| Velocity definition and formula | Speed with direction Displacement/time |
| Distance and _ are the same (2) | Scalar and speed |
| Displacement and _ are the same (3) | Vector and velocity and force |
| Acceleration is a _ which means it has _ and _ | Vector Magnitude Direction |
| Potential energy formula and kinetic | M x g x h Kinetic: 1/2mv squared |
| Acceleration practice problem: A police car speeds up from 0m/s to 20m/s in 5 sec. What’s its acceleration? | 4m/s squared |
| Net force: 6N left and 3N right | 3N left |
| The _ the mass of each object, the _ the force of attraction between them | Bigger Stronger |
| Moon gravity | 1.6m/s squared |
| Orbiting | A smaller mass in space follows a continuous path around a larger mass |
| Force formula | Mass x acceleration |
| Example of each of Newtons laws | 1st: a soccer ball will not move until it’s kicked 2nd: a full grocery cart requires more force to push than an empty cart 3rd: a rocket blasting off of a launch pad |
| Why does the Earth continue to orbit the Sun without stopping | The Earth has inertia |
| Balanced forces | Forces are equal in size and opposite in direction Have a net force of 0N |
| As electrons move they make | Ferromagnets |
| What item is not needed to build an electromagnet | Magnet |
| Where to find electromagnets | Junkyard cranes, headphones, generators |
| Element of the atom is determined by # of | Protons |
| Electrons are responsible for | Electricity and chemical reactions and magnetism |
| Magnetism | A force caused by moving electric charges. |
| Magnetic materials (ferromagnetic) | Iron Nickel Cobalt |
| Examples of conductors | Copper, aluminum, metal |
| Examples of insulators | Rubber, plastic, wood |
| Parts of a circuit | Energy source,wires,load (uses the electrical energy to do work), switch |
| In a series circuit, bulbs may appear | Dimmer |
| Energy unit | Joules |
| GPE | Dependent on mass and height |
| Chemical potential | Stored in bonds between atoms |
| Nuclear potential | Stored in the root of a nucleus |
| Radiant is also _ energy | Light |
| Electrical energy | The movement of electrons |
| Light can be (5) | Transmitted, reflected, refracted, absorbed, diffusion |
| Cycle of heating and cooling in fluids | |
| Transmission | Passing of waves through a material |
| Translucent vs opaque | Translucent: allows some light Opaque: allows no light |
| Diffusion | Light is scattered |
| Refraction | Light is bending. |
| Transverse waves | Waves that move up and down |
| Longitudinal waves | Straight line |
| Rest | Midpoint of wave |
| Wavelength unit | Lambda or backward y |
| Frequency and unit | How many waves go through a wavelength in 1 sec, it affects pitch Hertz (Hz) |
| Formula for speed of wave | V= backward y x f |
| Sounds travel slowest in | Gases and liquids |
| A waves with high frequency vs low frequency | High: purple Low:red |
| How might an increase in greenhouse gases lead to changes in temp | More heat is trapped |
Created by:
Emery1!