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Science Finals Ritch
| Question | Answer |
|---|---|
| What is the ability to do work? | energy |
| What is the energy of motion? | kinetic energy |
| what is the energy an object has because of its position? | potential energy |
| what are the units for work and energy? | joules |
| what is the energy transfereed between objects of different temperatures? | heat |
| law of conservation of energy | energy can't be created or destoryed but changed from one form to another |
| What is kinetic energy of a substance's atoms? | Thermal Energy |
| What is the measure of the average KE of particles in object? | Temperature |
| What is the formula for KE? | 1/2mv^2 |
| what is the formula for PE? | mass x gravity x height or weight x height. [ KG or NEWTONS ] |
| What is the formula for Work? | Force x distance |
| What is the formula for Mecanical Advantage? | Force output / Force input How much easier the machine makes work. |
| What is the formula for Mechanical Efficiency? | Work output / Work input x 100 percent. How much the work is losing to friction. |
| Label longitudinal and transverse wave. rarefaction, compression, amplitude, wavelength, crest, trough | Explain |
| What is Celcius? | Scientists use this scale. Melting point: zero degrees. Boiling Point: one hundred degrees. |
| What is Fahrenheit? | American way of measuring temperature. MP: 32 degrees. BP: 212 degrees |
| What is KElvin? | Officil SI temperature scale for physics. MP: 273K BP: 373K |
| What is absolute zero? | Temperature at which all molecular motion stops. |
| What is the transfer of thermal energy from one substance to another through direct contact? | Conduction |
| What is the transfer of TE by movement of liquid or gas? | Convection |
| What is the transfer of energy by EM waves? | Radiation |
| What is the circular motion of liquid or gas due to density difference that results from temperature difference? | convection currents |
| What is an insulator? | Substance that don't conduct TE well |
| What is a conductor? | substance that conduct TE well.Wave |
| What is the disturbance that transmits energy through matter or empty space? | Wave |
| What is a medium? | Substance through which a wave can travel. |
| What is a surface wave? | Waves that form near boundary between two media. |
| What is a wave that needs a medium? | Mechanical |
| What is a longitudinal wave? | Particles of a medium that vibrate back and forth along path that wave moves. |
| What is a transverse wave? | Waves where particles vibrate up and down. |
| What is the distance between two crests or compressions next to each other on a wave? | Wavelenth |
| What is frequency? | Number of waves produced in given time. |
| What is amplitude? | Maximum distannce particles of a wave's mdium vibrate from rest position. |
| What is Hertz? | Units of frequency. |
| What is a wave that bounces back after hitting a barrier? | reflection |
| What is a wave that bends as it passes from one medium to another at an angle? | refraction |
| What is diffraction? | Bending of waves around barrier or opening. |
| What is the law of reflection? | Angle of incidence is equal to angle of reflection. |
| What is resonance? | When two objects naturally vibrat at same frequency; sound of one object creates the other to vibrate. |
| What is alongitudinal wave cause by vibrations that travels through material medium? | Sound |
| What is intensity? | Amount of energy a wave carries. |
| What are the units of loudness? | decibels |
| What is pitch? | Measue of how high or low a sound is depending on frequency. |
| Elasticity? | Flexibility |
| What is the Doppler Effect? | An observed change in frequency of wave when source of observer moves. |
| What is the high frequency sound above limit of normal rancge of human hearing? | Ultrasound. |
| What is infrasound? | Sound at frequency below 20 HZ. |
| What are EM waves? | Wave that consists of electric and magnetic fields that vibrate at right angles to each other. |
| List all the wavelengths. | radio waves, microwaves, infrared waves—warmth, visible light-ROYGBIV, ultraviolet- skin cancer, vitamins, kill bacteria, X-rays, Gamma Rays. |
| Electric Charge | Positive or negative charge affected by gain or loss of electrons. |
| What is static electricity? | Elecric harge at rest on object. |
| What is an electroscope? | Device that detects elecricity. |
| What is resistance? | The opposition to current by material or device. |
| What is a series circuit and a parallel circuit? | Series are where parts are joined so current is same and parallel is where parts are joined in brances. |
| What is a circuit breaker? | Safety shut off in electric circuit. |
| What is opaque, translucent, and transparent? | Opaque can't be seen through, translucent can be seen, but not distinguished, and transparent can be seen. |
| What are virtual and real images? | Virtual is right up and real image is upsidee down. |
| What is concave and convex? | Concave curves inward and convex curves outward. |
| What is a mirror? | Highly reflective surface. |
| What is a lens? | Transparent glass used for focusing. |
Created by:
sweeteelou
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