? What does GPS stand for ?
GPS stands for Global Positioning System
? Global Positioning System (GPS)
Global Positioning System (GPS) is a satellite-based system that provides users with information about their location and time.
? What is the name of the satellite based system provides users with information about their location and time ?
Global Positioning System (GPS)
? What were the methods we used to find the routes before GPS came into use?
- By asking others
- By recognising some signs in nature
- By Using map
- BY identifying directions based on the sun and the stars
? What did people depend on to find routes and determine location before modern system like GPS ?
Directions
? Which are the different directions that you know ?
- East
- West
- North
- South
? What are the methods used to find the direction?
- Observing the position of the Sun
- Observing shadows
- Observing Certain Stars
- Using a Magnetic Compass
- Using mobile apps
? Let us see how Ahana finds the directions based on the position of the rising Sun.
- In which direction does the Sun appear to rise ?
East
- To which direction is Ahana facing ?
East
- Which direction is behind Ahana ?
West
- Which direction is on the left side of Ahana ?
North
- Then, what about the direction on her right side ?
South
- How can we find the directions when the Sun is not visible to us ?
Using Magnetic Compass
? Magnetic Compass
- Magnetic Compass is an instrument used to find out the directions.
- There is a magnetic needle in the centre of the compass.
- This needle always points in the north- south direction.
- The specifically marked tip of the needle indicates the north direction.
? Shall we help Rahan to find the directions using a compass?
- Which direction is Rahan facing ?
When we observe the needle in the compass which Rahan holds it can be seen that he is facing the South.
- Which is the direction on Rahan's left side ?
East
- Which Name the direction on Rahan's right side.
West
? Likewise , try to find out the directions of your classroom using a comass.
- In which direction is the blackboard in the classroom?
- In which direction is the door of the classroom?
- In which direction are the windows of the classroom?
? Let us mark the directions We have already found out the directions of different objects in our classroom. Let us draw a sketch of the classroom.
?How are the directions marked when you make a sketch?
- North on the topside of the paper
- South is at the bottom
- East is on the right
- West is on the left
? Represent the objects in the classroom using the symbols given below.
? Let us find out
? Observe the picture given above and find answers.
- In which direction of the school is the library ?
South
- In which direction of the post office is the library ?
West
- In which direction should Ahana and Rahan travel to reach the hospital from their houses ?
East
- In which direction of Rahan's house is the school?
North
- In which direction of the school is the hospital ? Is it exactly on the East ?
Not due east. It's south east
- In which direction of the Grocery shop is the library ?
West
- In which direction from Rahan's house is the Grocery shop ?
North