Cardinal Directions and Maps for Class 3 EVS
- Knowing the correct directions is essential if you want to go somewhere.
- Directions such as left-right and up-down help to know about your or others’ positions.
- North, East, West, and South are the cardinal directions used to find the destination and someone’s position on the map.
- A map is a drawing of any area with accurate measurements.
- One can use printed maps, a magnetic compass, and satellite navigation to get the correct directions.
What Are the Four Cardinal Directions?
All Children Are Playing in Front of the Building. According to Kid-1, the School Building Is Behind Him, and According to Kid-2, the School Building Is in Front of Him. How Is It Possible?
- The direction of an object changes with respect to the position of a person.
- Kids 1 and 2 must be standing opposite one another which changes the direction of the school for them.
Why Is India Situated Towards the East of Africa and the West of Thailand?
- The north, south, east and west directions are related to your position on the Earth.
- When one is facing north, the east is towards their right side and the west is towards their left side.
- The position of India is such that Africa is on India’s left (west) side and Thailand is on India’s right (east) side.
- So, with respect to Africa, India is in the east direction, and for Thailand, India is in the west.
How Are the Hands of a Clock Used to Show the Directions?
The digits of the clock—12, 3, 6, and 9 are used to denote the directions as follows—
|Hour hand position||Clock time||Cardinal direction||Normal direction|
|On 12||12 o clock||North||Forward|
|On 3||3 o clock||East||Right-hand side|
|On 6||6 o clock||South||Backwards|
|On 9||9 o clock||West||Left-hand side|
What Is the Use of Lighthouse?
- In the olden days, a lighthouse on the coast guided the sailors to get the correct directions toward the nearby port.
- A lighthouse also warned the sailors about the rocks in the coastal region.
- In those days, the lighthouse was the only thing that helped to direct the ships in the coastal areas.
Why Does the North Direction Always Lies on Top of the Map?
- European explorers drew the first-ever maps. European countries are situated in the northern hemisphere of the Earth.
- For their convenience, they made maps pointing to the north on the top, as they mostly explored the northern hemisphere.
- Later it was standardized and accepted worldwide.
Why Is the Scale So Important for Map Reading?
- A map without a scale is a mere sketch of that area.
- An appropriate scale tells you about the real distance between two locations on the map.
- It also helps to measure the area of a particular place.
- So, a map without the correct scale will not be useful.
Satellite Images Are More Reliable Than Human Explorations for Map-Making. Why So?
- A satellite takes pictures of an area from space.
- >These images are taken from the top, so they give the correct idea about the size of the buildings, directions of roads, and other things about an area.
How to Find Location by Latitude and Longitude?
- Latitudes and longitudes are imaginary horizontal and vertical lines that make a grid around the globe.
- These intersect at a unique point which is not the same for any place.
- Hence, the position of latitudes and longitudes can be used to specify the absolute location of a place on Earth’s surface.
A Map Can Go Out of Date. Explain How.
- A map is a symbolic representation of an area at a particular time.
- Old maps show the locations of the prominent features of that time.
- These features may change in the future. For example, a river’s flow can change over a certain period. The political boundaries of a city, state, or country may change.
- Therefore, a map can go out of date.
What Is a Magnetic Compass? How Does It Work?
- A magnetic compass is a device that is used to identify cardinal directions based on the deflections in the tiny magnetic needle.
- The needle of a magnetic compass is a small needle that always points in the north direction.
- When placed near a magnet, the needle of the magnet would change its direction due to the influence of the magnet and hence would not point in the correct direction.
What Is the Use of an Air Traffic Control Tower in an Airport?
- The Air traffic control towers are equipped with a system called RADAR.
- Like traffic police guiding the car traffic on the roads, this tower navigates the air traffic.
- The arrival and departure of aeroplanes on the airstrip are monitored and instructions are given to the pilots whenever required. s