Science practices
The very first step in any scientific activity.
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A push or a pull
Force
The idea that the earth is the center of the universe
Geocentrism
Two main ideas in Darwin's Origin of Species
1. All living things have a common ancestor
2. Things evolve mainly due to the process of natural selection
Definition of work
Force applied over a given distance
A reasonable prediction about the answer to a scientific question
Hypothesis
A change in position relative to an observer
Motion
The first person that we know of who suggested a heliocentric model of the solar system
Aristarchus
A random change in genetic inheritance; sometimes caused by a "copying" mistake in DNA replication
Genetic mutation or variation
Unit of measure for work and energy
Joules
An observation involving numbers or measurements
Quantitative
Newton's 2nd law of motion
F = ma; The acceleration of an object depends on its mass and the force applied to it.
Planets in our solar system with a rocky surface
Mercury, Venus, Earth, and Mars
When a population of a species migrates to a new area, becomes isolated, and evolves into a new, separate species due to the demands of the new environment
Speciation
A wheelbarrow is an example of this type of lever
2nd class
An explanation for a large set of observations; usually an attempt to simplify a situation to make it understandable
Scientific model
Formula for momentum
p = mv
What stars are mostly made of
Hydrogen and helium
A genus of ape that is able to walk on two legs for extended periods of time
Hominid
A comparison of work done by a machine and work done by a person using the machine
Mechanical efficiency
A hypothesis with so much evidence to support it that it can safely be considered a fact
Theory
Any change in an object's speed or direction
Acceleration
Most commonly accepted theory for the origin of, well, everything
Big Bang Theory
Geologic era in which mammals first evolved
Mesozoic
A device composed of 2 or more simple machines work together
Compound machine