Brightening things up in science
Tuesday 4th December |
In year 4 the children did a comprehensive unit on electricity. In the next two weeks we are refreshing that knowledge.
Today we investigated making a simple circuit, making the light brighter and making it dimmer. During our investigations, we found some things didn’t work quite as expected!
When a circuit didn’t work we had to change different variables one at a time (wire, bulb, battery) to see what wasn’t working properly.
Someone found that using a bigger battery made the bulb dimmer! We concluded that this shouldn’t be right as a bigger battery must surely mean more power. We decided it must be because the bigger battery was much older and was running out of power. (The small batteries were brand new).
When making the bulb dimmer, we found that increasing the length of the wire or adding another bulb into the circuit worked as the power was being shared.