Chapter 1
Experiment: this is how you can solve a problem
Hypothesis: a guess
Variable: what you use to test your hypothesis to see if it holds true
Trial: to try
Materials: what you need
Data Tables: charts, tables, graphs/anything you use to organize data(into a table)
Safety: to prevent accidents
Science: trying to understand the world around you
Chapter 8
Neutron: *think*: neutron/neutral (no charge)
Proton: positive charge *think*proton/positive
Electron: Negative charge- JUST REMEMBER!
Matter: anything that takes up space
Element: matter made up of one type of atom
Periodic Table: organizes elements by the number of protons in each elements nucleus
Types of Matter:
Mixture Element Compound
How fast is "fast"
Formula for speed: Distance divided by speed
Distance/time
Newton's laws of Motion
Law 1: Inertia: resistance to a change in motion
Law 2: Force=mass*acceleration
A=F/M
Law 3= every action has an opposite and equal reaction
Work-
Work= Force*Distance
Work: when a force moves something through a distance and the force and motion are in the same direction (power and movement)
Joule: one Newton-meter (unit for measuring work)
Machines (simple)
-WHEEL AND AXLE: (doorknob) made with different sized wheels that are connected and turn together
-INCLINED PLANE: (ramp) sloped surface used to make lifting things easier
-SCREW: (screw) an inclined plane rapped around a rod
-LEVER: moves in a fulcrum
First Class: (See-saw) Our Force....Fulcrum.......Opposing
Alfred Wegener (1880 - 1930), German meteorologist...
Alfred Wegener (1880 - 1930), German meteorologist...
Wegener's theory of Continental Drift, vindicated ...Force {Move things}
Second Class: (wheelbarrow) Fulcrum......Opposing Force......Our Force {Easier to lift}
Third Class: (Baseball Bat) Fulcrum.......Our Force.......Opposing Force {Faster}
Movable Pulleys: 2x Easier for each x-tra wheel than a regular one.
Potential Energy- Built up energy.
Kinetic Energy- Energy of moving objects
Warmth transfers to cool energy.
Chapter 13 Static Electricity
Opposites attract
Like charges repel
Electrical Energy: the energy of charges in motion
Static Electricity: the buildup or loss of electrons...