- What is the law of V?
- What is the rule of V’s for contour lines?
- How do you calculate a strike?
- How can you tell which way a river flows?
- Is V IR Ohm’s law?
- What is strike line?
- Which way does water flow on a topographic map?
- Is V IR always true?
- How many types of contour lines are there?
- Why do contour lines never cross?
- Why do we measure strike and dip?
- What is strike in mining?
- What are the only two rivers in the world that flow north?

## What is the law of V?

Topographical Law of V’s.

Topographic Law of V’s.

On a topographical map contour lines often form a V that opens towards lower elevations.

Water flows out of the V, away from the point and towards the top of the V..

## What is the rule of V’s for contour lines?

As a rule of thumb, the V-shaped contour is pointing upstream (the opposite direction from the flow of a stream or river). The “V” shape contours indicate streams and drainage. As you can see, the “V” points uphill to a higher elevation. … The less separation between contour lines means a steeper slope and vice versa.

## How do you calculate a strike?

To determine the strike, measure the angle between your constructed strike lines and the North direction on the map. In Figure 9, the strike is north-south (= 000◦ = 180◦). By definition, dip is perpendicular to strike, and by using the Rule of V’s (Figure 7) you can determine the direction of dip.

## How can you tell which way a river flows?

How can we determine such case? Water generally flows downhill. So on a topgraphic map, find the numbered elevation contour lines that cross the river, and it will be flowing the direction in which the numbers are getting smaller (closer to sea level).

## Is V IR Ohm’s law?

Ohm’s law states that the voltage or potential difference between two points is directly proportional to the current or electricity passing through the resistance, and directly proportional to the resistance of the circuit. The formula for Ohm’s law is V=IR.

## What is strike line?

STRIKE is the direction of the line formed by the intersection of a rock surface with a horizontal plane. … On a fold, the AXIS is the ridge or plane of sharpest folding. PLUNGE is the acute angle the axis of a folded rock mass makes with a horizontal plane.

## Which way does water flow on a topographic map?

Water always flows downhill perpendicular to the contour lines. As one proceeds upstream, successively higher and higher contour lines first parallel then cross the stream.

## Is V IR always true?

Only in the ideal world where there’s no inductance or capacitance, will V=IR be true at all times over a resistor. In our non-ideal world, you’re right that V=IR only applies at steady state after the influence from capacitance and inductance fall away. V=IR is only valid at steady state.

## How many types of contour lines are there?

3 kindsThere are 3 kinds of contour lines you’ll see on a map: intermediate, index, and supplementary. 1. Index lines are the thickest contour lines and are usually labeled with a number at one point along the line. This tells you the elevation above sea level.

## Why do contour lines never cross?

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.

## Why do we measure strike and dip?

Strike and dip are measurements of the orientation and slope of a rock. Geologists use these measurements to map geologic structures. The dip of a rock is the angle between horizontal and the slope of the rock. The strike of a rock is the orientation of a horizontal line drawn perpendicular to the dip.

## What is strike in mining?

The terms ‘Strike’ and ‘Dip’ are used with geology and mining to define a plane for rock slope analysis. In more technical terms, strike is the direction of the line that is formed by the intersection of the plane of the rock bed with a horizontal surface. …

## What are the only two rivers in the world that flow north?

Johns River and the Nile River are the only two rivers in the world that flow north.” In this editorial he explains that there are hundreds of rivers that flow north and; in fact, the St.