Y8: Reading Graphs

• Science
• Lower Secondary (Key Stage 3)

Y8: Reading Graphs

When reading graphs in science it is important to be very accurate. You get very little margin for error.

On this graph, the value of A is 78%. 

If you wrote 77% or 79% it was marked wrong.

To be able to read a graph accurately, you must be able to read the scale. In other words, you need to know how much one small box (graduation) is worth.

This also applies to reading scales on measuring equipment such as thermometers and measuring cylinders.

In this case my scale goes from 0 to 10 and I have 10 small squares.

Each square is worth 1. So to find the number the arrow is pointing at, I count up in 1s.

What number is the arrow pointing to?

What number is the arrow pointing to?

In this case my scale goes from 0 to 10 and I have 5 small squares.

To find the value of one square I divide 10 by the number of squares. Each square is worth 2. So to find the number the arrow is pointing at, I count up in 2s.

In this case my scale goes from 0 to 20 and I have 5 small squares.

To find the value of one square I divide 20 by the number of squares. Each square is worth 4. So to find the number the arrow is pointing at, I count up in 4s.

In this case my scale goes from 0 to 1 and I have 5 small squares.

To find the value of one square I divide 1 by the number of squares. Each square is worth 0.2. So to find the number the arrow is pointing at, I count up in 0.2s.

This method will work for any scale.

What number is the arrow pointing to?

What number is the arrow pointing to?

What number is the arrow pointing to?

What number is the arrow pointing to?

What number is the arrow pointing to?

What number is the arrow pointing to?

What is the value shown? Include units.

What is the value shown? Include units.

What is the value shown? Include units.

What is the value shown? Include units.

What is the value shown? Include units.

What is the value shown? Include units.

What is the value shown? Include units.

What is the value shown? Include units.

What is the volume of water in the container?

What is the volume of water in the container?

What is the volume of water in the container?

What is the temperature on the thermometer?

What is the temperature on the thermometer?

What is the temperature on the thermometer?

How many sludge worm were found at site B?

How many freshwater shrimp were found at site B?

What was the rate of photosynthesis at:
a. 30000 lux
b. 5000 lux
c. 15000 lux

What time is the person's blood glucose:
a. Highest?
b. Lowest?

What was the rate of photosynthesis at:
a. 1000 lux
b. 1500 lux
c. 4000 lux

What was the pH of milk after 2 days:
a. At 15
b. At 5

°C

°C

What was the pH of milk after 3.5 days:
a. At 15
b. At 5

°C

°C