Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
My Pals are Here! Science © 2008 Marshall Cavendish (Singapore) Private Limited A question to think about… What makes a system? My Pals are Here! Science © 2008 Marshall Cavendish (Singapore) Private Limited Non-living things • A system is made up of What if one many parts. part of the • Some systems like a bus system fails? and a car are man-made systems. • There are many smaller systems in the bus and the car which have to work properly to keep the vehicles moving. My Pals are Here! Science © 2008 Marshall Cavendish (Singapore) Private Limited Non-living things • The slippers shown below are made up of parts. • Before the slippers can be worn for walking, the parts must be put together properly first. My Pals are Here! Science © 2008 Marshall Cavendish (Singapore) Private Limited Living things • Every living thing, plant or animal, is a natural system. • A living thing is made up of many parts. Each part does a special job. • All the parts work together to keep the living thing alive. My Pals are Here! Science © 2008 Marshall Cavendish (Singapore) Private Limited Living things • Parts of animals What makes an animal a o Animals have special parts to carry out their system? needs. o Such needs include taking in air, food and water, and also removing wastes from their bodies. o The eyes, mouth, nose and ears are some of the parts of animals that help them achieve these needs. My Pals are Here! Science © 2008 Marshall Cavendish (Singapore) Private Limited Living things • Parts of plants leaf A plant is also a system. o A plant is made up of parts such as the stem, roots and leaves. o stem roots My Pals are Here! Science © 2008 Marshall Cavendish (Singapore) Private Limited My Pals are Here! Science © 2008 Marshall Cavendish (Singapore) Private Limited My Pals are Here! Science © 2008 Marshall Cavendish (Singapore) Private Limited