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Physics A study help
Physics flash cards for help
| Term | Definition |
|---|---|
| Velocity | The speed of something in a given direction. |
| Speed | The rate at which something is able to move at. |
| Distance | An amount of space between things. |
| Time | A point that something is measure at, usually in hours/seconds. |
| Force | Strength used in physical action. |
| Mass | Large body of matter. |
| Acceleration | Capacity to gain speed. |
| Newton's 1st law | Every object will remain at rest. |
| Newton's 2nd law | F=MA |
| Newton's 3rd law | For every action, there is a equal or opposite reaction. |
| Momentum | Quantity of motion of movement, measured by mass and velocity. |
| Elastic collision | No lost kinetic energy, when 2 masses bounce off each other. |
| Inelastic collision | Momentum is conserved, but kinetic energy is not. |
| How do objects move in our universe? | Due to gravity. |
| If we throw a baseball or tennis ball into space from a spaceship, how much force is needed to keep it moving? | None. Space is a vacuum and there is no speed in space due to gravity. |
| Energy | The ability to do work. |
| Thermal energy | The energy by a system due to movement of particles, causes heat. |
| Kinetic energy | The energy a object owns due to its motion. |
| Potential energy | Stored energy that depends on various parts of a system. |
| Heat | A high temperature. |
| Gravity | A force that attracts a mass towards the center of the earth. |
| Work | Activity involving physical effort and affirmation to achieve a promised result. |
| Conduction | When heat or electricity is transmitted through a substance when there is electric potential, used by connecting sources together when touched. |
| Convection | Movement caused within a hot fluid, which moves cold fluid to the bottom by gravity. |
| Radiation | Emission of energy as EM waves, which can cause heat. |
| How is energy conserved through transfers and transformations? | It cannot be created or destroyed, only changed from one form to another or from one place to another. |
| If a object has a high temperature, what is true about its molecules? | It's molecules are moving very fast, the temperature also has more kinetic energy than cold temperatures do. |
| Voltage | The push or pressure that drives electrical currents through a circuit. |
| Current | A body of water or air moving in a specific direction, especially in a body with less movement. |
| Resistance | The refusal to accept into something/ to prevent something from happening. |
| Conductor | Material that allows electricity to travel through it. |
| Circuit | Closed path through which a electrical current can flow through. |
| Parallel | A thing similar in length and sides. |
| Switch | Electrical component that acts as a conductor which interrupts the flow of a electrical current in a circuit. |
| How do you tell if a circuit is open or closed? | When a circuit is open, there is a break in the path of energy. |
| What would happen if you put a positive and negative charge near each other? | They would pull towards each other. |
| If a object is negatively charged, does it have more or less electrons than it began with? | More electrons. |
| What happens if a circuit does not provide a complete path for electricity to follow? | No current will flow. |
| What is the difference between a transverse and longitudinal wave? | The direction of the particles. |
| What are the units that we measure frequency in? | Hertz (HZ) |
| Is sound a transverse or longitudinal wave? | Longitudinal. |
Created by:
srhodes28
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