In an ecosystem, plants and animals all rely on each other to live. Scientists sometimes describe this dependence using a food chain or a food web. Read on to find out more information and play some fun games! Food chain All living things need food to give them the energy to grow and move. A food chain shows how each…
Tag: science for children
Thought experiments
The great scientist, Albert Einstein, used thought experiments to help him develop his amazing relativity theories about space and time. He used these imaginary experiments because it wasn’t actually possible at that time to do the experiments he thought up. More recently, with modern developments in science and technology, some of these experiments have become possible and when they are…
Chemical and Physical Changes
There are several differences between a physical and chemical change in matter or substances. A physical change in a substance doesn’t change what the substance is. In a chemical change where there is a chemical reaction, a new substance is formed and energy is either given off or absorbed. Does that sound complicated? Here are some examples that will hopefully…
