# Shared Flashcard Set

## Details

Science test: Motion
8th grade physical sceince test on laws of motion
19
Science
01/29/2016

Term
 Newton's 1st Law
Definition
 An object in motion will stay in motion unless a force acts on the object. An object at rest will stay at rest unless a force acts on the object.
Term
 Newton's 2nd law
Definition
 F=ma Force = mass * acceleration
Term
 Newton's 3rd Law
Definition
 For every action there is an equal and opposite reaction
Term
 Inertia
Definition
 The tendency of an object to resist a change in motion.
Term
 Examples of Newton's 1st Law
Definition
 Tablecloth trick, meterstick and dominoes
Term
 Examples of Newton's Second Law
Definition
Term
 Examples of Newton's 3rd Law
Definition
 Car & dominoes, kicking a soccer ball, domino rally
Term
 Gravity
Definition
 A force that pulls objects together
Term
 Universal Gravitation
Definition
 Gravity acts everywhere in the Universe
Term
 Factors affecting gravity
Definition
 Mass and distance
Term
 Weight vs. mass
Definition
 Mass is the amount of matter in an object. Weight is the amount of gravitational force on an object.
Term
 Air resistance
Definition
 Objects falling through air experience a type of fluid friction.
Term
 Endothermic and exothermic reactions.
Definition
 Endothermic reactions are reactions where enery is taken in. Exothermic reactions are reactions where energy is released.
Term
 Law of conservation of mass
Definition
 Mass is never created nor destroyed, it is only changed.
Term
 Balancing chemical equations
Definition
 2 H2 + 1 O2 = 2 H2O
Term
 Reflection Refraction Diffraction Interference
Definition
 When a wave hits a surface it cannot pass through and bounces off. When a wave bends around a corner. When a wave goes around a barrier. Interaction between waves that meet
Term
 Pressure vs. Volume Pressure vs. Temperature Temperature vs. Volume
Definition
 Pressure up, volume down Pressure down, temperature down Temperature up, volume up
Term
 How atoms move in a solid, liquid, and gas
Definition
 Solids: Slow, low movement, close Liquid: Mid-speed, medium motion, medium distance Gas: Fast, high movement, far apart
Term
 What will happen when the mass or forces are changed?
Definition
 The object's acceleration, and therefore speed of motion, will change in proportion to the other variables.
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