Wedi’i anelu at ddisgyblion 7-11 oed, mae’r gweithgaredd hwn yn rhoi cyfle ymarferol i'r disgyblion i ddysgu am y dydd a’r nos. Gan ddefnyddio pêl o play-doh a thortsh, bydd y disgyblion yn darganfod sut mae cylchdro'r Ddaear yn achosi’r dydd a’r nos.
Day and Night
In this workshop you will use whole sky movies to help you understand what different people around the world experience as our planet spins once every 24 hours. The following sections will guide you through different aspects of the relationship between Earth's rotation, orbital path and tilt towards the Sun.
In this workshop you will use a speeded-up simulation of the visible sky to help you understand why we experience night and day on our planet.
The animation below shows how shadows change during the day in the northern hemisphere. Shadows are created when an object, such as the stick below, blocks out some of the Sun's light. The length of the resulting shadow depends on how low or high the Sun is in the sky.
Try moving your mouse pointer over the time symbols to pause the animation at that particular time.
Here's a practical suggestion: