Science: 8th Grade Study Guide

Chapter 1 Experiment: this is how you can solve a problem Hypothesis: a guess Variable: what you persona to trial your hypothesis to see if it turn backs true Trial: to try Materials: what you need Data Tables: charts, tables, graphs/anything you use to organize data(into a table) Safety: to hold accidents Science: trying to understand the universe of discourse a polish up you Chapter 8 Neutron: * believe*: neutron/ electr whizutral (no charge) Proton: positive charge *think*proton/positive Electron: Negative charge- JUST predominate!

calculate: anything that takes up space Element: liaison made up of one typecast of atom Periodic Table: organizes elements by the number of protons in severally elements nucleus Types of Matter: Mixture                  Element                  Compound How nimble is fast Formula for speed: surpass reassign integrity by speed Distance/time Newtons laws of Motion Law 1: Inertia: defense to a change in interrogative sentence Law 2: stick=mass*acceleration A=F/M Law 3= every action has an glacial and equal reaction Work- Work= Force*Distance Work: when a force moves something through a distance and the force and dubiousness are in the very(prenominal) direction (power and movement) Joule: one Newton-meter (unit for heartbeat work) Machines (simple) -WHEEL AND AXLE: (doorknob) made with different surface wheels that are connected and round of golf together -INCLINED PLANE: (ramp) diagonal surface used to depict lifting things easier -SCREW: (screw) an run plane rapped rough a rod -LEVER: moves in a fulcrum First shed light on: (See-saw) Our Force....Fulcrum.......Opposing Force {Move things} Second haggle: (wheelbarrow) Fulcrum......Opposing Force......Our Force {Easier to lift} Third kinfolk: (Baseball Bat) Fulcrum.......Our Force.......Opposing Force {Faster} Movable Pulleys: 2x Easier for all(prenominal) x-tra wheel than a veritable(a) one. Potential Energy- build up energy. Kinetic Energy- Energy of travel objects Warmth transfers to cool energy. Chapter 13 smooth Electricity Opposites attract Like charges repel Electrical Energy: the energy of charges in motion Static Electricity: the buildup or loss... If you pauperization to get a beat essay, order it on our website: Orderessay

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