Definitions
Force is something that changes the ______ or _____ of an object.
Motion or Shape
The tendency of a moving object to resist change.
Intertia - Newton's 1st Law of Motion
A returning force is also called a ________.
Elastic force
The amount of force put on a given surface area
Pressure
For every action, there is an equal and opposite reaction.
Newton's 3rd Law of Motion
When friction is created by a substance like air or water, the air and water are considered to be _______.
Fluids
The scientist who discovered all things fall at the same speed (in a vacuum)
Galileo
The straight line change in position of an object
Displacement
The greater an object's mass, the greater its ______.
Gravitational pull
A tool to measure the density of liquids to pure water.
Hydrometer
Heat Engine
A machine that converts heat energy into mechanical energy (can be natural, like a hurricane, or man-made, like a car engine)
Gravity
Force that pulls all matter together.
Orbit
The repeating path in space that one object takes around another.
Steps of the Scientific Method
Observe, Question, Hypothesize, Experiment, Conclude, Share
What is a Newton?
The metric measurement of force
Lubricant
A substance between two surfaces that reduces friction; it's usually a liquid.
Mass
The amount of matter (stuff) in an object.
Friction
The force that slows down two objects rubbing together.
Buoyancy
The ability to float in water, air, or some fluid.
Speed
The distance an object moves in a certain amount of time. Distance traveled divided by time it took.
Velocity
The speed of an object going in a certain direction in a straight line.
Bernoulli's Principle
The pressure in a fluid decreases as the speed of the fluid increases.
Newton's 2nd Law of Motion
Force = Mass x Acceleration
Difference between Spring and Neap tides.
Spring - earth, moon, and sun aligned; much higher and lower tides
Neap - earth, moon, and sun non aligned; weak tides
Explain Centripetal Force.
A force that continually pulls a spinning object toward its center, like the earth pulling the moon.