Unit 7: Matter, materials and forces Forces and their effects Matter: Materia Reversible: Reversible Irreversible: Ireversible Artefacts: Artefacto Mixture: Mezcla To shape: Dar forma
Force: Fuerza Push or pull: Empujar o tirar To speed up: Acelerar To slow down: Frenar Non-contact forces: Fuerzas de no contacto
Contact forces: Fuerzas de contacto Towards: Hacia To fly off: Volar Compass: Brújula To move away: Alejarse Opposite: Contrario Friction: Fricción To rub: Frotar Parachute: Paracaídas Buoyancy: Flotabilidad Upward: Hacia arriba To exert: Ejercer
Physical and Chemical changes To melt: Derretir To turn back: Volver Vase: Jarrón Appearance: Apariencia Still: Todavía / Aún Unlike: A diferencia de To burn: Quemar Atom: Átomo Rust: Óxido Fresh food: Comida fresca To leave: Dejar For too long: Durante demasiado tiempo To soften: Ablandar
Useful expressions: Physical changes occur when matter changes shape or state.
Matter, Mass and volume Mass: Masa To occupy: Ocupar Definitive: Definitivo Density Cork: Corcho To sink: Hundirse Average density: Densidad media Cargo: Carga
A reversible change means we can turn the substance back to its original form. Density explains why some objects float on water and others sink. If we put opposite poles together, the magnets attract each other.
The pages we are going to study in this unit are: 100, 101, 104, 105, 106 and 107. Remember guys to visit the blog every week http://senecabilingualblog15.blogspot.com.es/