What is the definition for direction?
1 : the path along which something moves, lies, or points I’m coming from the opposite direction. 2 : an order or instruction to be followed Read the directions first.
What is direction with example?
Examples: North South East and West are all directions. Up, Down, Left and Right are also directions.
What type of word is direction?
Word forms: plural directions. 1. variable noun. A direction is the general line that someone or something is moving or pointing in.
What is the root word of direction?
late 14c., direccioun, “action of directing or guiding,” from Latin directionem (nominative directio) “a making straight, a straight line, a directing (toward something),” noun of action from past-participle stem of dirigere “to set straight, arrange; give a particular direction to,” from dis- “apart” (see dis-) + …
How do you define the direction down?
adverb. from higher to lower; in descending direction or order; toward, into, or in a lower position: to come down the ladder.
What is the up and down direction called?
Vertical describes something that rises straight up from a horizontal line or plane. The terms vertical and horizontal often describe directions: a vertical line goes up and down, and a horizontal line goes across. You can remember which direction is vertical by the letter, “v,” which points down.
What is another word for Down?
What is another word for down?
| depressed | sad |
|---|---|
| downhearted | glum |
| disheartened | dispirited |
| saddened | dismal |
| gloomy | sorrowful |
What direction is back and forth?
backward and forward; side to side; to and fro: a back-and-forth shuttling of buses to the stadium; the back-and-forth movement of a clock’s pendulum.
Is it back and forward or back and forth?
The phrases “back and forth” and “backward and forward” mean basically the same thing. The phrase “back and forward” seems to be an inconsistent combination of the two phrases. This particular phraseology may have been unintentional, as this seems to be the only time in the seven books that the author used it.
What things go back and forth?
An oscillating pendulum or a ball tossed vertically into the air are examples of things that go back and forth….Introduction
- Oscillating pendulum.
- Dynamics cart rolling up and down an incline.
- Student jumping into the air.
- Mass oscillating at the end of a spring.
- Ball tossed into the air.
What is back and forth movement called?
When an object moves back and forth, it is called a vibration. This wave motion is related to simple harmonic motion, but instead of one object vibrating about its equilibrium position, many particles do so.
In what direction do waves move?
A wave is transporting energy from left to right. The particles of the medium are moving back and forth in a leftward and rightward direction.
What wave moves up and down?
Transverse waves
What is a quick back and forth movement?
vibration. the rapid back and forth movement of matter that may produce sound. frequency. the number of waves that pass by a point each second.
What do you call a repeated back and forth or up-and-down motion?
A vibration is a repeated back-and-forth or up-and-down motion. Vibration When a vibration moves through a medium, a wave results.
What is it called when air particles are moved further apart?
The shape of a sound wave with no obstacles in its way would be approximately spherical. Figure 1 shows the air as particles or molecules. Where the molecules are pushed closer together is an area of compression and when they spring back (even further apart than before) there is an area of rarefaction.
How does the movement of particles affect the speed of sound through it?
If a material is more dense because its molecules are larger, it will transmit sound slower. It takes more energy to make large molecules vibrate than it does to make smaller molecules vibrate. Thus, sound will travel at a slower rate in the more dense object if they have the same elastic properties.
What happens to the movement of molecules when their temperature is lowered?
Note how temperature effects the motion of the atoms or molecules in a liquid. As the temperature of a solid, liquid or gas increases, the particles move more rapidly. As the temperature falls, the particles slow down.
At what temperature is the speed of sound the slowest?
A: For each 1 degree Celsius that temperature decreases, the speed of sound decreases by 0.6 m/s. So sound travels through dry, -20 °C air at a speed of 319 m/s….Temperature and Speed of Sound.
| Temperature of Air | Speed of Sound Waves (m/s) |
|---|---|
| 20 °C | 343 |
| 100 °C | 386 |
Which temperature will sound travel faster?
Does air temperature affect the speed of sound? Kim Strong, a professor of physics at the University of Toronto says the answer is yes, in fact sound travels faster when the air is hotter. At 25 C, the speed of sound is 1,246 kilometres per hour.
Does speed of sound depend on frequency?
Frequency is determined by the frequency of the source, and the properties of the medium (stiffness and density) determine the speed of sound. The wavelength would change however since λ = c/f where c is the speed of sound.
What material does sound travel through the fastest?
solids
What four aspects of materials affect the speed of sound?
When understanding the speed of sound through different mediums or materials, there are several factors to consider besides density.
- Elastic Properties. Elastic properties are the properties of a material that allow it to maintain its shape when you apply force to it.
- Air Density.
- Temperature.
What is the distance between Rarefactions called?
The distance between two consecutive compressions or rarefactions in a wave is called the wavelength.