Inaugurated by IN-SPACe
ISRO Registered Space Tutor
S1-SA3-1138
What is East (as 090° Bearing)?
Grade Level:
Class 5
Geometry, Geography, GPS, Computing, Robotics
Definition
What is it?
East is one of the four main cardinal directions, pointing towards where the Sun rises. When we use bearings, East is represented by 090 degrees, meaning it's 90 degrees clockwise from North.
Simple Example
Quick Example
Imagine you are standing in a cricket field. If North is straight ahead of the bowler, then East would be to your right, exactly where the Sun starts to appear in the morning. If you turn 90 degrees clockwise from North, you face East.
Worked Example
Step-by-Step
Let's find East on a compass:
1. Start by facing North. On a compass, North is always 000 degrees.
---2. Now, you need to turn clockwise. Think of a clock hand moving from 12 towards 3.
---3. Turn exactly 90 degrees clockwise from North.
---4. The direction you are now facing is East.
---5. On a bearing system, this direction is marked as 090 degrees.
ANSWER: East is at 090 degrees bearing, 90 degrees clockwise from North.
Why It Matters
Understanding directions like East (090° bearing) is crucial for navigation and mapping. Pilots use it to fly planes, and sailors use it to steer ships. Even your phone's GPS uses these principles to show you directions, helping you find your way to school or a friend's house.
Common Mistakes
MISTAKE: Thinking East is 90 degrees counter-clockwise from North. | CORRECTION: Bearings are always measured clockwise from North. East is 90 degrees CLOCKWISE from North.
MISTAKE: Confusing East with West. | CORRECTION: East is where the Sun rises, and West is where it sets. They are opposite directions, 180 degrees apart.
MISTAKE: Forgetting that North is 000 degrees when calculating bearings. | CORRECTION: Always start your bearing measurement from North (000 degrees) and move clockwise.
Practice Questions
Try It Yourself
QUESTION: If you are facing North (000°), how many degrees clockwise do you need to turn to face East? | ANSWER: 90 degrees
QUESTION: A train is travelling towards the direction where the Sun rises. What is its bearing? | ANSWER: 090 degrees
QUESTION: Your friend says they are walking at a bearing of 090 degrees. If they start from your house facing North, describe their path. | ANSWER: They are walking directly towards the East, turning 90 degrees clockwise from North.
MCQ
Quick Quiz
Which of these statements correctly describes East in terms of bearing?
It is 90 degrees counter-clockwise from North.
It is 180 degrees clockwise from North.
It is 090 degrees clockwise from North.
It is the same direction as North.
The Correct Answer Is:
C
Bearings are measured clockwise from North (000°). East is exactly 90 degrees clockwise from North, making its bearing 090 degrees. Options A, B, and D are incorrect as they describe other directions or incorrect measurements.
Real World Connection
In the Real World
When you use Google Maps or an app like 'Ola' or 'Uber' to find your way, the directions shown often use these bearings. For example, if the app tells the driver to 'turn East', it means to turn towards 090 degrees from their current North, helping them navigate busy Indian roads efficiently.
Key Vocabulary
Key Terms
BEARING: The direction of a point measured in degrees clockwise from North | CARDINAL DIRECTIONS: The four main directions: North, East, South, West | CLOCKWISE: Moving in the same direction as the hands of a clock | NORTH: The primary cardinal direction, used as the starting point (000°) for bearings
What's Next
What to Learn Next
Now that you understand East, try learning about South (180° Bearing) and West (270° Bearing). This will help you master all cardinal directions and understand how full circles (360 degrees) are used in navigation.
