Home » Maths for Planet Earth » Graphing Global Sea Level Rise

Graphing Global Sea Level Rise

Facebook
Twitter
Pinterest
Print

The graph shows satellite measurements of global sea level rise since 2000 plotted relative to 1993. (sea level rise measured in mm = millimetres)

a) Draw a line of best fit through the data and write an equation for your line in the form y = mx + c, to show how sea level is rising through time.
[3 marks]

b) What are the units of your value for mx, and c?
[1 mark]

c) Using your equation, work out how much higher sea level will be in 50 and 100 years’ time.
[2 marks]

graphing global sea level rise

Some scientists think that sea level isn’t rising with a constant rate, but is in fact accelerating. 

Fitting a quadratic curve to this data gives the equation, y = 0.05x 2 + 2.6x  + 21.3.

d) What are the units of the value for 0.05x2? 
[1 mark]

e) Use this equation to calculate how high sea level will be in 50 and 100 years’ time. 
[2 marks]

f) What is the difference between your answers in (c) and (e)? 
[1 mark]

Start exploring

Latest from blog

More Maths for Planet Earth

A Level
A country wishes to achieve net-zero CO2 emissions in 50 years.  At the start of the program their emissions are 800MtCO2 year-1.  They decide
GCSE
A homeowner wishes to cover their roof with solar panels. Their roof can be modelled as a prism with volume 24m3 The height of
GCSE
As the atmosphere warms, the air holds more water vapour, and this could lead to more intense rainfall events, resulting in an increased flood
GCSE
Below is a diagram of 3 offshore wind turbines, A, B and C, in a wind farm, as seen from above. Given that the