Matching Pairs The weatherOnline version Let's learn about weather. by Daniel Educaplay 1 The instrument we use to measure temperature is... 2 3 When the weather is cold... 4 When the weather is hot... 5 Temperature is measured in... 6 Humidity is the amount of ........................... in the air. 7 When there is a lot of humidity... 8 Clouds ... the temperature is low. ... degrees. ... fog and clouds can form. Water vapour ... a thermometer. Fog ... temperature is high.