Why is london united kingdom farther north than ottawa canada but it's warmer

The Ocean is closer to the UK than Ottawa , this helps to keep the temperature constant because it takes more heat to warm up water than it does just land. Because if this, if somewhere was closer to ocean, it would take more heat to heat it hotter, but more cold to cool it down, so overall it would be warmer than somewhere with little water nearby.

Its in the national history museum and you can't se the original because its locked away in a vault