LINER, WET WEATHER PONCHO.â. Originating from the Vietnam era, this item is used as a lightweight, easily packed, and field expedient blanket that can be used in many different environments and applications. The item has properties that gives service members warmth and comfort even when wet.
(note the four planets are GAS giants). Explain that these pictures all show MATTER. Have children log on to http://chem4kids.com/files/matter_intro.html to find the definition of matter. Matter is anything that takes up space and has mass (weight).
Gravity is a force pulling together all matter (which is anything you can physically touch). The more matter, the more gravity, so things that have a lot of matter such as planets and moons and stars pull more strongly. Mass is how we measure the amount of matter in something. The more massive something is, the more of a gravitational pull it exerts. As we walk on the surface of the Earth, it pulls on us, and we pull back.