Question

What is Grid and Gridlines?

Hint:

A grid is a net of vertical and horizontal lines. Name the two sets of lines.

Answer 1

Step 1: Understand the question:
We must explain two terms, grid and gridlines. The marking scheme gives 1 mark for each.

Step 2: Meaning of a grid:
A grid is a regular pattern of vertical and horizontal lines laid over the layout of the earth, or over a map of it. The pattern is made up of equal squares so that any place can be pointed out easily.

Step 3: Meaning of gridlines:
The vertical lines are called the lines of longitude. The horizontal lines are called the lines of latitude. When these two sets of lines are put together they are called the gridlines.

Final Answer:
A grid is a systematic pattern of vertical and horizontal lines on the earth's layout. The vertical lines are longitude, the horizontal lines are latitude, and together they are called gridlines. \[ \boxed{\text{Grid: vertical and horizontal lines; gridlines}} \]