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Physical Science Study Guide

by: Samantha Ayala

Physical Science Study Guide 16535

Marketplace > California State University, Northridge > Science > 16535 > Physical Science Study Guide
Samantha Ayala
California State University, Northridge

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About this Document

This study guide covers vocabulary, and people who are important in the first stages of physical science, and in the energy field. It covers newtons laws of motion, and it covers weight vs mass.
PSCH 170
George Davis
Study Guide
Science, Physical, Energy, kinetic energy, potential, velocity, speed, mass, weight, motion
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This 2 page Study Guide was uploaded by Samantha Ayala on Friday October 7, 2016. The Study Guide belongs to 16535 at California State University, Northridge taught by George Davis in Fall 2016. Since its upload, it has received 7 views. For similar materials see PSCH 170 in Science at California State University, Northridge.

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Date Created: 10/07/16
Physical Science Study Guide Who is? John Snow – realized human waste negatively affected town water in England Ptolemy – geocentric view (2 century AD, main view for 1500 years) Copernicus – sun centered view (1543) Tycho Brahe – used quadrants to determine position of stars and planets st J. Kepler – 1 law sates that planets orbit in ellipse Galileo – founder of experimental science (thermometer/pendulum/mechanics) Newton – Laws of Motion, gravity James Watts – horsepower term/power James Prescott Joule – studied work/energy Lord Kelvin – tried to find out how old the earth is with heat Terms: (in parenthesis is what it is measured in) Pseudoscience: astrology, psychology, nothing predictable cannot be talked about quantifiably. Hypothesis: based on previous knowledge or observations, an educated guess Ockhams Razor: simplest solution is most likely to be correct. Mechanics: motion of material objects Speed: distance over time it takes to travel. (m/s) Velocity: distance over time it takes to travel, also includes direction of travel (m/s) Acceleration: measures the rate of change of velocity (m/s^2) Uniform motion: an object moving in a straight line at a constant speed. Impulse: Force and time Torque: twisting force Work: force is exerted over a distance (Joules) Energy: ability to do work (Joules) Power: rate at which work is done (watts) Horsepower: was developed to tell farmers how many horses they could replace (a healthy horse could do 550 ft x lbs/s in a day Kinetic Energy: associated with moving object (joules) Potential Energy: Energy waiting to be released (joules) Calorie: the amount of energy needed to raise the temperature of a kilogram of water 1 degree Celsius Trophic Levels: consist of all organisms that get energy from the same source First law of thermodynamics: energy is conserved (cannot be created or destroyed) Linear Momentum: mass multiplied by velocity Newton’s Laws of Motion 1 : an object moving in uniform motion will continue to and an object at rest will continue to be at rest, unless acted on by an outside force (inertia) 2 : Force is proportional to mass multiplied by acceleration (Newtons) 3 : For every action there is an equal and opposite reaction. Law of Gravitation: Universal No matter how many times you drop a pen it will go to the floor g = 9.8 m/s^2 (constant) Mass vs Weight Weight is a force! If you weigh 600 pounds on the earth then on the moon you will weigh 100 pounds. Even though your weight has changed your mass is still the same. Types of energy Gravitational Electrical Chemical Elastic Heat Wave magnetic


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