Science Study Guide Flashcards
Gram
a metric unit of mass
Liter
a metric unit of capacity
Velocity
Velocity is a physical vector quantity; both magnitude and direction are needed to find it
Volume
the amount of space that a substance or object occupies
Density
the degree of compactness of a substance
Acceleration
increase in the rate or speed of something
Gravity
the force that attracts a body toward the center of the earth
Force
strength or energy as an attribute of physical action or movement
Mass
a large amount of material.
Inertia
a tendency to do nothing or to remain unchanged
Balance scale
A device for weighing
Friction
the resistance that one surface or object encounters when moving over another.
Independent variable
a variable (often denoted by x ) whose variation does not depend on that of another.
Dependent variable
a variable (often denoted by y ) whose value depends on that of another.
Constant variable
Controlled variable
X axis
a variable (often denoted by y ) whose value depends on that of another.
Y axis
the secondary or vertical axis of a system of coordinates, points along which have a value of zero for all other coordinates.
Horizontal
A askew line
Vertical
A straight line
Bar graph
A Bar Graph (also called Bar Chart) is a graphical display of data using bars of different heights.
Pie chart
A pie chart (or a circle chart) is a circular statistical graphic which is divided into slices to illustrate numerical proportion. In a pie chart, the arc length of each slice (and consequently its central angle and area), is proportional to the quantity it represents.
Newton’s first law
An object at rest will remain at rest unless acted on by an unbalanced force. An object in motion continues in motion with the same speed and in the same direction unless acted upon by an unbalanced force.
Newton’s 2nd law
Acceleration is produced when a force acts on a mass. The greater the mass (of the object being accelerated) the greater the amount of force needed (to accelerate the object).
Newton’s 3rd law
For every action there is an equal and opposite re-action.
