Our topic this term is 'Extremes.' We learnt more about thunder and lightning and drew pictures to cement our learning. We discussed how the positive charge or protons form at the top of the cloud and the negative charges or electrons form at the bottom of the cloud. Since opposites attract, a positive charge builds up on the ground beneath the cloud. The ground’s electrical charge concentrates around anything that sticks up, such as mountains, people or single trees. The charge coming up from these points eventually connects with a charge reaching down from the clouds and then lightning strikes! Thunder is the sound made by lightning. This is why you hear thunder and see lightning together during a thunderstorm. WOW! Year 4 Scientists are amazing!