# How many homes can the world’s largest offshore wind farm power in an hour?￼

Math skills: Multiplication

Related Environmental issues: renewable energy

The world’s largest offshore wind farm Hornsea 2 in the UK has 165 wind turbines.

A single rotation of a wind turbine takes 6 seconds and generates energy to power a home for a day. How many homes can the Hornsea 2 wind farm power in an hour of operation?

1. 1,650 homes
2. 9,900 homes
3. 99,000 homes

1 hours = 3600 seconds

A wind turbine rotates [3600/6=600] times in an hour.

A wind turbine generates energy to power 600 homes in an hour.

There are 165 wind turbines in the Hornsea 2 wind farm, so the wind farm can generate energy to power [600 x 165 =  99,000] homes in an hour.

# How tall are adult Asian elephants?￼

Math skills: Multiplying fractions

Related Environmental issues: Biodiversity / Deforestation

Asian elephants are endangered species, and its population has dropped by about 50% over the past 75 years.

Adult Asian elephants are 2 2/3  times taller than baby elephants.  Baby elephants are 3 feet tall.  How tall are adult Asian elephants?

3 x 8/3 = 8