Learn about how snow forms and why it is cold. This episodes covers:
KS1 - observe changes across the four seasons
- observe and describe weather associated with the seasons and how day length varies.

KS2 - compare and group materials together, according to whether they are solids, liquids or gases
- observe that some materials change state when they are heated or cooled, and measure or research the temperature at which this happens in degrees Celsius (°C)
-describe the movement of the Earth, and other planets, relative to the Sun in the solar system
-recognise that light appears to travel in straight lines