You will find lots of websites here to help your Science understanding:
The Kid Should See This
The Kid Should See This is an unprecedented collection of 4,500+ kid-friendly videos, curated for teachers and parents who want to share smarter, more meaningful media in the classroom and at home.
National Geographic Kid - Science
Do you dream of becoming an astronaut, engineer or naturalist? Then you’re in the right place! Their science for kids section is bursting with incredible science facts about the way our world works. From biology, chemistry, physics and natural history, you’ll discover some incredible secrets, awesome theories and explore some bonkers experiments in their super science for kids. Journey with us through the natural world, the workings of the human body and even to the deepest, darkest depths of outer space. Ready for blast off? Click about to start your journey of scientific discovery!