Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Physical Science C12
| Question | Answer |
|---|---|
| What is the formula for work? | work= force multiplied by distance |
| What is the difference between vibrations and oscillations? | vibrations are very small and rapid, and oscillations are large and slower |
| What is a period? | a period is the time it takes an object to to complete one cycle of a system; usually measured in seconds |
| What is frequency? | the rate at which cycles repeat |
| does mass affect an objects period? | yes, the more mass, the slower the object will vibrate, and the longer it will take to complete a period |
| what is restoring force? | the pull that wants to restore the object to resting position |
| what is damping? | the effect of friction on periodic motion, and makes the amplitude get smaller- without this the object would continue to vibrate forever |
| what is resonance? | the opposite of damping, and makes the amplitude get bigger |
| what is a pendulum? | simply a mass attached to an arm at a pivot point that swings under the influence of gravity |
| what is the formula for the period? | period (T) = 2*pie*the square root of length (L) over gravity (G) |
| What are waves? | periodic changes that transmit energy from one place to another |
| what is a mechanical wave? | when the particles stay almost stationary as the energy is transferred; mechanical waves carry energy by transferring oscillations to adjacent particles, not by carrying the particles along the wave. |
| what do waves require? | a medium to travel across |
| what are electromagnetic waves? | the fastest waves that we know of(300,000,000 miles per second) |
| can electromagnetic waves travel through a vacuum? | yes |
| what does wave speed depend on? | the medium |
| where do surface waves move fastest? | in deeper water |
| what is the formula for wave velocity? | velocity= frequency*wavelength |
| what is a pulse? | a single wave cycle or a very short burst of waves (e.g. animal clicks or chirps) |
| Why do mechanical waves exist? | because they transfer energy through matter |
| how are waves classified? | in transverse waves and longitudinal waves |
| what is a crest? | the peak of a wave |
| what is a trough? | the lowest point of a wave |
| what is refraction? | when a wave moves from one medium to another, and its speed changes |
| what is reflection? | when a wave bounces off a surface that doesn't completely absorb it |
| what is a wavelength? | the length of one crest to another, or one trough to another |
| what is wave interference? | when two waves come together from opposite directions |
| what are beats? | when two or more continuous waves interfere and are replaced by a set of waves with larger amplitudes with lower frequencies |
| what is diffraction? | when a wave moves past a corner and appears to fold or low around the corner |
| what is the doppler effect? | it explains how our perception of a sound can change depending on if we are getting closer or further away from the source. the same effect also explains how we see things |
Created by:
who?
Popular Physical Science sets