How do you talk about form in art?
As an Element of Art, form connotes something that is three-dimensional and encloses volume, having length, width, and height, versus shape, which is two-dimensional, or flat. A form is a shape in three dimensions, and, like shapes, can be geometric or organic.
What type of lines are used to define edges?
Contour lines – Contour lines are mainly used to define edges and create boundaries of elements. This type of line is probably the line type mostly used or seen in web design, borders being a classic example.
What are the importance of contour lines?
These contour lines are an important way of showing the rise and fall of the land on a map. Contour lines show all the places that are the same height above sea level. They also tell us about the slope of the land. On a steep slope, the lines are close together.
What are the method of contouring?
There are two methods of contour surveying:
- Direct method.
- Indirect method.
Can contour lines intersect?
Contour lines can never cross one another. Each line represents a separate elevation, and you can’t have two different elevations at the same point.
How can you identify holes or depressions from contour lines?
Contour lines that show a depression, crater, or sinkhole on a map are represented by dashed lines (hachure marks) on the inside of a contour line. The elevation of the first depression contour is the same as the nearest regular contour line.
What does Index contour mean?
Index contours are bold or thicker lines that appear at every fifth contour line. If the numbers associated with specific contour lines are increasing, the elevation of the terrain is also increasing.
Can one contour line have multiple values?
Contour lines never cross. They may come very close to each other (e.g. along a cliff), but by definition they may never cross each other. * This is because one location on the surface of Earth cannot be at two different elevations!
What does it mean when contour lines are close together?
Contour lines that are relatively close together indicate a slope that is fairly steep. Contour lines that are further apart indicates a slope that is relatively flat. The area of the map above boxed in orange shows an area that has a fairly steep slope, while the area boxed in purple is a relatively flat area.
How many feet of elevation are there between contour lines?
We call this spacing the contour interval. For example, if your map uses a 10-foot contour interval, you will see contour lines for every 10 feet (3 meters) of elevation — lines at 0, 10, 20, 30, 40 and so on. Different maps use different intervals, depending on the topography.
What is the difference between contour interval and horizontal equivalent?
Contour interval (CI) is the difference of value of two consecutive contours (larger contour value – next smaller contour value). Horizontal equivalent is the horizontal distance between any two consecutive contours. Generally CI remains constant for any contour map, but horizontal equivalent varies with varying slope.
What is horizontal equivalent?
Horizontal Equivalent is the actual distance between two points on two contour lines. Slope of the land is known as the gradient. It can be expressed as. Gradient = Vertical Interval/Horizontal Equivalent.
What are the uses of contours?
Uses of the Contour Lines
- To estimate the water storage capacity, back water limit and max .
- Volume of the proposed excavation wok,
- To decide whether certain location is visible from another location,
- To decide exact line of railway or road way haing safe slope,
- To determine the ground water level from contours of ground water.
Who uses contour maps?
Hikers, campers, snow skiers, city and county planners, the Fish and Wildlife Service, Forest Service, miners, loggers, highway planners and construction workers, travelers, surveyors, geologists, engineers, and scientists are just a few of the people who use topographic maps.
Which of the following is method of locating contour?
The method of locating contours directly consists of horizontal and vertical control. The horizontal control for a small area can be exercised by a chain or tape and a large area by compass, theodolite or plane table. For vertical control either a level and staff or a hand level may be used.
What is the interpolation method?
Interpolation is a statistical method by which related known values are used to estimate an unknown price or potential yield of a security. If there is a generally consistent trend across a set of data points, one can reasonably estimate the value of the set at points that haven’t been calculated.
Which method is suitable for the contouring of hilly areas?
Tacheometric method
What is block contouring?
By squares (block contouring)- In this method the area to be surveyed is dividing into no of the square of size 5 to 20m. depending upon the nature of ground and contour interval required. The elevation of the corner of the square is determined by the mean of the process of levelling.
Which is the arithmetic check for the height of instrument method?
Which is the arithmetic check for the height of instrument method? Explanation: To check if the readings are written properly, an arithmetic check is done. The sum of back sight (BS) and Fore sight (FS) are subtracted. It should be equal to the difference of the last and first reduced level (RL).
Which of the following methods is extremely rough and is used for small scale work only?
Explanation: Estimation method is extremely rough and is used for small scale work only. Explanation: Estimation method is extremely rough and is used for small scale work only. The positions of contour points between the guide points are located by estimation.